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Jira issue Flink-11127

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Boris Lublinsky

Re: Jira issue Flink-11127

And it works now

The problem was that I was setting jobmaneger.rest.address

jobmanager.rpc.address

that was creating actor system on the local host

Although I am still getting the below messages in the job manager periodically, but they seem to be harmless

ERROR org.apache.flink.runtime.rest.handler.legacy.files.StaticFileServerHandler - Caught exception

java.io.IOException: Connection reset by peer

at sun.nio.ch.FileDispatcherImpl.read0(Native Method)

at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)

at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)

at sun.nio.ch.IOUtil.read(IOUtil.java:192)

at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)

at org.apache.flink.shaded.netty4.io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288)

at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1108)

at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:345)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)

at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)

at java.lang.Thread.run(Thread.java:748)

2019-02-22 16:49:22,016 WARN org.apache.flink.runtime.dispatcher.DispatcherRestEndpoint - Unhandled exception

java.io.IOException: Connection reset by peer

at sun.nio.ch.FileDispatcherImpl.read0(Native Method)

at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)

at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)

at sun.nio.ch.IOUtil.read(IOUtil.java:192)

at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)

at org.apache.flink.shaded.netty4.io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288)

at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1108)

at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:345)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)

at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)

at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)

at java.lang.Thread.run(Thread.java:748)

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Feb 22, 2019, at 10:35 AM, Andrey Zagrebin <[hidden email]> wrote:
cc [hidden email]
On Fri, Feb 22, 2019 at 1:28 AM Boris Lublinsky <[hidden email]> wrote:
Adding metric-query port makes it a bit better, but there is still an error

019-02-22 00:03:56,173 INFO org.apache.flink.runtime.taskexecutor.TaskExecutor - Could not resolve ResourceManager address akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/user/resourcemanager, retrying in 10000 ms: Ask timed out on [ActorSelection[Anchor(akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/), Path(/user/resourcemanager)]] after [10000 ms]. Sender[null] sent message of type "akka.actor.Identify"..
2019-02-22 00:04:16,213 INFO org.apache.flink.runtime.taskexecutor.TaskExecutor - Could not resolve ResourceManager address akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/user/resourcemanager, retrying in 10000 ms: Ask timed out on [ActorSelection[Anchor(akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/), Path(/user/resourcemanager)]] after [10000 ms]. Sender[null] sent message of type "akka.actor.Identify"..
2019-02-22 00:04:36,253 INFO org.apache.flink.runtime.taskexecutor.TaskExecutor - Could not resolve ResourceManager address akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/user/resourcemanager, retrying in 10000 ms: Ask timed out on [ActorSelection[Anchor(akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/), Path(/user/resourcemanager)]] after [10000 ms]. Sender[null] sent message of type "akka.actor.Identify"..
2019-02-22 00:04:56,293 INFO org.apache.flink.runtime.taskexecutor.TaskExecutor - Could not resolve ResourceManager address akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/user/resourcemanager, retrying in 10000 ms: Ask timed out on [ActorSelection[Anchor(akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/), Path(/user/resourcemanager)]] after [10000 ms]. Sender[null] sent message of type "akka.actor.Identify”..

In the task manager and

2019-02-21 23:59:46,479 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]
2019-02-21 23:59:57,808 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]
2019-02-22 00:00:06,519 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]
2019-02-22 00:00:17,849 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]
2019-02-22 00:00:26,558 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]
2019-02-22 00:00:37,888 ERROR akka.remote.EndpointWriter - dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123/]] arriving at [akka.tcp://flink@maudlin-ibis-fdp-flink-jobmanager:6123] inbound addresses are [akka.tcp://flink@127.0.0.1:6123]

I the job manager

Port 6123 is opened in both Job Manager deployment

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: {{ template "fullname" . }}-jobmanager
spec:
replicas: 1
template:
metadata:
annotations:
prometheus.io/scrape: 'true'
prometheus.io/port: '9249'
labels:
server: flink
app: {{ template "fullname" . }}
component: jobmanager
spec:
containers:
- name: jobmanager
image: {{ .Values.image }}:{{ .Values.imageTag }}
imagePullPolicy: {{ .Values.imagePullPolicy }}
args:
- jobmanager
ports:
- containerPort: 6123
name: rpc
- containerPort: 6124
name: blob
- containerPort: 8081
name: ui
env:
- name: CONTAINER_METRIC_PORT
value: '{{ .Values.flink.metric_query_port }}'
- name: JOB_MANAGER_RPC_ADDRESS
value : {{ template "fullname" . }}-jobmanager
livenessProbe:
httpGet:
path: /overview
port: 8081
initialDelaySeconds: 30
periodSeconds: 10
resources:
limits:
cpu: {{ .Values.resources.jobmanager.limits.cpu }}
memory: {{ .Values.resources.jobmanager.limits.memory }}
requests:
cpu: {{ .Values.resources.jobmanager.requests.cpu }}
memory: {{ .Values.resources.jobmanager.requests.memory }}

And Job manager service

apiVersion: v1
kind: Service
metadata:
name: {{ template "fullname" . }}-jobmanager
spec:
ports:
- name: rpc
port: 6123
- name: blob
port: 6124
- name: ui
port: 8081
selector:
app: {{ template "fullname" . }}
component: jobmanager
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 6:13 PM, Boris Lublinsky <[hidden email]> wrote:
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 2:05 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

the exact command depends on the docker-entrypoint.sh script and the image you are using. For the example contained in the Flink repository it is "task-manager", I think. The important thing is to pass "taskmanager.host" to the Taskmanager process. You can verify by checking the Taskmanager logs. These should contain lines like below:

2019-02-21 08:03:00,004 INFO org.apache.flink.runtime.taskexecutor.TaskManagerRunner [] - Program Arguments:
2019-02-21 08:03:00,008 INFO org.apache.flink.runtime.taskexecutor.TaskManagerRunner [] - -Dtaskmanager.host=10.12.10.173

In the Jobmanager logs you should see that the Taskmanager is registered under the IP above in a line similar to:

2019-02-21 08:03:26,874 INFO org.apache.flink.runtime.resourcemanager.StandaloneResourceManager [] - Registering TaskManager with ResourceID a0513ba2c472d2d1efc07626da9c1bda (akka.tcp://flink@10.12.10.173:46531/user/taskmanager_0) at ResourceManager

A service per Taskmanager is not required. The purpose of the config parameter is that the Jobmanager addresses the taskmanagers by IP instead of hostname.

Hope this helps!

Cheers,

Konstantin
On Wed, Feb 20, 2019 at 4:37 PM Boris Lublinsky <[hidden email]> wrote:
Also, The suggested workaround does not quite work.
2019-02-20 15:27:43,928 WARN akka.remote.ReliableDeliverySupervisor - Association with remote system [akka.tcp://flink-metrics@flink-taskmanager-1:6170] has failed, address is now gated for [50] ms. Reason: [Association failed with [akka.tcp://flink-metrics@flink-taskmanager-1:6170]] Caused by: [flink-taskmanager-1: No address associated with hostname]
2019-02-20 15:27:48,750 ERROR org.apache.flink.runtime.rest.handler.legacy.files.StaticFileServerHandler - Caught exception

I think the problem is that its trying to connect to flink-task-manager-1

Using busybody to experiment with nslookup, I can see
/ # nslookup flink-taskmanager-1.flink-taskmanager
Server: 10.0.11.151
Address 1: 10.0.11.151 ip-10-0-11-151.us-west-2.compute.internal

Name: flink-taskmanager-1.flink-taskmanager
Address 1: 10.131.2.136 flink-taskmanager-1.flink-taskmanager.flink.svc.cluster.local
/ # nslookup flink-taskmanager-1
Server: 10.0.11.151
Address 1: 10.0.11.151 ip-10-0-11-151.us-west-2.compute.internal

nslookup: can't resolve 'flink-taskmanager-1'
/ # nslookup flink-taskmanager-0.flink-taskmanager
Server: 10.0.11.151
Address 1: 10.0.11.151 ip-10-0-11-151.us-west-2.compute.internal

Name: flink-taskmanager-0.flink-taskmanager
Address 1: 10.131.0.111 flink-taskmanager-0.flink-taskmanager.flink.svc.cluster.local
/ # nslookup flink-taskmanager-0
Server: 10.0.11.151
Address 1: 10.0.11.151 ip-10-0-11-151.us-west-2.compute.internal

nslookup: can't resolve 'flink-taskmanager-0'
/ #

So the name should be postfixed with the service name. How do I force it? I suspect I am missing config parameter

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:33 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

the solution is actually simpler than it sounds from the ticket. The only thing you need to do is to set the "taskmanager.host" to the Pod's IP address in the Flink configuration. The easiest way to do this is to pass this config dynamically via a command-line parameter.

The Deployment spec could looks something like this:
containers:
- name: taskmanager
  [...]
  args:
  - "taskmanager.sh"
  - "start-foreground"
  - "-Dtaskmanager.host=$(K8S_POD_IP)"
  [...]
  env:
  - name: K8S_POD_IP
    valueFrom:
      fieldRef:
        fieldPath: status.podIP
Hope this helps and let me know if this works.

Best,

Konstantin

On Sun, Feb 17, 2019 at 9:51 PM Boris Lublinsky <[hidden email]> wrote:
I was looking at this issue https://issues.apache.org/jira/browse/FLINK-11127
Apparently there is a workaround for it.
Is it possible provide the complete helm chart for it.
Bits and pieces are in the ticket, but it would be nice to see the full chart

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

--
Konstantin Knauf | Solutions Architect
+49 160 91394525

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--
Konstantin Knauf | Solutions Architect
+49 160 91394525

Follow us @VervericaData
--
Join Flink Forward - The Apache Flink Conference
Stream Processing | Event Driven | Real Time
--
Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
--
Data Artisans GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

Boris Lublinsky

Re: Starting Flink cluster and running a job

In reply to this post by Dawid Wysakowicz-2

And its working now.

Sorry about all confusion.

The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

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[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

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+1 530-210-6378
http://www.scaleunlimited.com
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--

Konstantin Knauf | Solutions Architect

+49 160 91394525

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--

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--
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Boris Lublinsky

Re: Starting Flink cluster and running a job

And there are more explanations and concerns there

It turns out that the execution depends on where my jar is located.

If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )

It fails. With the same error.

Currently I have the following in this directory

fdp-flink-taxiride-assembly-2.0.0.jar  flink-metrics-prometheus-1.7.2.jar  flink-queryable-state-runtime_2.11-1.7.2.jar  log4j-1.2.17.jar

flink-dist_2.11-1.7.2.jar	       flink-python_2.11-1.7.2.jar	   flink-table_2.11-1.7.2.jar			 slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

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[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

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http://www.scaleunlimited.com
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--

Konstantin Knauf | Solutions Architect

+49 160 91394525

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Data Artisans GmbH Registered at Amtsgericht Charlottenburg: HRB 158244 B Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

Boris Lublinsky

Re: Starting Flink cluster and running a job

Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

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[info] +-com.typesafe:config:1.3.3

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[info] | | | +-org.scala-sbt:test-interface:1.0

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[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
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--

Konstantin Knauf | Solutions Architect

+49 160 91394525

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Ken Krugler

Re: Starting Flink cluster and running a job

Hi Boris,

1. I assume you’ve tried marking the Kafka dependencies as “provided”, and that also failed, yes?

2. Did you try shading the Kafka dependencies?

— Ken

PS - Moving this conversation back to the user list.

On Feb 27, 2019, at 2:03 PM, Boris Lublinsky <[hidden email]> wrote:
Guys, please,
I do still need help with this one
It does work if I put my jar into a random directory, but fails if I put it into Lib.
And I do need to put it into lib, because standalone-job.sh does not take a jar, it assumes a jar to be in lib

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 26, 2019, at 7:33 AM, Boris Lublinsky <[hidden email]> wrote:
Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe:config:1.3.3

[info] +-joda-time:joda-time:2.10.1

[info] +-org.joda:joda-convert:2.1.2

[info] +-org.typelevel:cats_2.11:0.9.0 [S]

[info] +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] |

[info] +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | +-org.scala-sbt:test-interface:1.0

[info] |

[info] +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] +-org.scala-lang:scala-reflect:2.11.12 [S]

[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

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--

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--
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--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra

Boris Lublinsky

Re: Starting Flink cluster and running a job

I am not including Kafka per se - I am using Flink Kafka connector, that pulls in Kafka.

I tried exclude and it failed.

I can’t quite shade Kafka and it does not seem like the right thing to do.

I tried to see where it is loaded from, and its my jar, but I see its being loaded twice when it is in Lib.

You guys should be able to easily reproduce it on any Kafka sample that you have

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Feb 27, 2019, at 2:10 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

1. I assume you’ve tried marking the Kafka dependencies as “provided”, and that also failed, yes?

2. Did you try shading the Kafka dependencies?

— Ken
PS - Moving this conversation back to the user list.
On Feb 27, 2019, at 2:03 PM, Boris Lublinsky <[hidden email]> wrote:
Guys, please,
I do still need help with this one
It does work if I put my jar into a random directory, but fails if I put it into Lib.
And I do need to put it into lib, because standalone-job.sh does not take a jar, it assumes a jar to be in lib

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 26, 2019, at 7:33 AM, Boris Lublinsky <[hidden email]> wrote:
Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe:config:1.3.3

[info] +-joda-time:joda-time:2.10.1

[info] +-org.joda:joda-convert:2.1.2

[info] +-org.typelevel:cats_2.11:0.9.0 [S]

[info] +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] |

[info] +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | +-org.scala-sbt:test-interface:1.0

[info] |

[info] +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] +-org.scala-lang:scala-reflect:2.11.12 [S]

[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

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--

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--
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--------------------------
Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra

Konstantin Knauf-2

Re: Starting Flink cluster and running a job

Hi Boris,

I was not able tot reproduce your problem. I am using the docker-entrypoint.sh and Dockerfile from the flink-container project [1].

The content of my fat-jar:

flinkShadowJar
+--- project :fe-flink-common
+--- org.apache.flink:flink-metrics-influxdb_2.11:1.8-SNAPSHOT
+--- org.apache.flink:flink-metrics-slf4j:1.7.2
+--- org.apache.flink:flink-connector-kafka_2.11:1.7.2
|    +--- org.apache.flink:flink-connector-kafka-base_2.11:1.7.2
|    \--- org.apache.kafka:kafka-clients:2.0.1
|         +--- org.lz4:lz4-java:1.4.1
|         \--- org.xerial.snappy:snappy-java:1.1.7.1
\--- org.apache.flink:flink-s3-fs-presto:1.7.2

In the standard Docker image the job.jar is "only" linked into the Flink lib directory. I also tested it with a modified Dokerfile, which copies the job.jar into the lib directory of Flink.

bash-4.4$ ls -lia lib
total 135140
611154 drwxrwxr-x    1 flink    flink         4096 Mar 6 10:20 .
606092 drwxrwxr-x    1 flink    flink         4096 Feb 11 15:38 ..
26477916 -rw-r--r--    1 flink    flink     93445474 Feb 11 15:38 flink-dist_2.11-1.7.2.jar
26477917 -rw-r--r--    1 flink    flink       141937 Feb 11 15:37 flink-python_2.11-1.7.2.jar
26477525 -rw-r--r--    1 flink    flink     44278062 Mar 6 10:20 job.jar
26477918 -rw-rw-r--    1 flink    flink       489884 Feb 11 14:32 log4j-1.2.17.jar
26477919 -rw-rw-r--    1 flink    flink         9931 Feb 11 14:32 slf4j-log4j12-1.7.15.jar

This also works. In that case you only need to make sure, that the job.jar is owned by the flink user by epxlicitly changing the ownership in the Dockerfile. Given your description of the Dockerfile, I suspect this is the problem.

Cheers,

Konstantin

[1] https://github.com/apache/flink/tree/release-1.7.2/flink-container

On Wed, Feb 27, 2019 at 11:19 PM Boris Lublinsky <[hidden email]> wrote:

I am not including Kafka per se - I am using Flink Kafka connector, that pulls in Kafka.
I tried exclude and it failed.

I can’t quite shade Kafka and it does not seem like the right thing to do.
I tried to see where it is loaded from, and its my jar, but I see its being loaded twice when it is in Lib.

You guys should be able to easily reproduce it on any Kafka sample that you have
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 27, 2019, at 2:10 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

1. I assume you’ve tried marking the Kafka dependencies as “provided”, and that also failed, yes?

2. Did you try shading the Kafka dependencies?

— Ken
PS - Moving this conversation back to the user list.
On Feb 27, 2019, at 2:03 PM, Boris Lublinsky <[hidden email]> wrote:
Guys, please,
I do still need help with this one
It does work if I put my jar into a random directory, but fails if I put it into Lib.
And I do need to put it into lib, because standalone-job.sh does not take a jar, it assumes a jar to be in lib

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 26, 2019, at 7:33 AM, Boris Lublinsky <[hidden email]> wrote:
Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe:config:1.3.3

[info] +-joda-time:joda-time:2.10.1

[info] +-org.joda:joda-convert:2.1.2

[info] +-org.typelevel:cats_2.11:0.9.0 [S]

[info] +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] |

[info] +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | +-org.scala-sbt:test-interface:1.0

[info] |

[info] +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] +-org.scala-lang:scala-reflect:2.11.12 [S]

[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

Stream Processing | Event Driven | Real Time

--

Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--
Data Artisans GmbH Registered at Amtsgericht Charlottenburg: HRB 158244 B Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen
--------------------------
Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra

--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

Stream Processing | Event Driven | Real Time

--

Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--

Data Artisans GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

Boris Lublinsky

Re: Starting Flink cluster and running a job

Thanks Konstanin,

A couple of question?

1. Is your fat jar in lib directory? If it is not it works fine

2. The error occurs only when you start pushing traffic on Kafka

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/

On Mar 6, 2019, at 4:27 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

I was not able tot reproduce your problem. I am using the docker-entrypoint.sh and Dockerfile from the flink-container project [1].

The content of my fat-jar:

flinkShadowJar
+--- project :fe-flink-common
+--- org.apache.flink:flink-metrics-influxdb_2.11:1.8-SNAPSHOT
+--- org.apache.flink:flink-metrics-slf4j:1.7.2
+--- org.apache.flink:flink-connector-kafka_2.11:1.7.2
|    +--- org.apache.flink:flink-connector-kafka-base_2.11:1.7.2
|    \--- org.apache.kafka:kafka-clients:2.0.1
|         +--- org.lz4:lz4-java:1.4.1
|         \--- org.xerial.snappy:snappy-java:1.1.7.1
\--- org.apache.flink:flink-s3-fs-presto:1.7.2

In the standard Docker image the job.jar is "only" linked into the Flink lib directory. I also tested it with a modified Dokerfile, which copies the job.jar into the lib directory of Flink.

bash-4.4$ ls -lia lib
total 135140
611154 drwxrwxr-x    1 flink    flink         4096 Mar 6 10:20 .
606092 drwxrwxr-x    1 flink    flink         4096 Feb 11 15:38 ..
26477916 -rw-r--r--    1 flink    flink     93445474 Feb 11 15:38 flink-dist_2.11-1.7.2.jar
26477917 -rw-r--r--    1 flink    flink       141937 Feb 11 15:37 flink-python_2.11-1.7.2.jar
26477525 -rw-r--r--    1 flink    flink     44278062 Mar 6 10:20 job.jar
26477918 -rw-rw-r--    1 flink    flink       489884 Feb 11 14:32 log4j-1.2.17.jar
26477919 -rw-rw-r--    1 flink    flink         9931 Feb 11 14:32 slf4j-log4j12-1.7.15.jar

This also works. In that case you only need to make sure, that the job.jar is owned by the flink user by epxlicitly changing the ownership in the Dockerfile. Given your description of the Dockerfile, I suspect this is the problem.

Cheers,

Konstantin

[1] https://github.com/apache/flink/tree/release-1.7.2/flink-container
On Wed, Feb 27, 2019 at 11:19 PM Boris Lublinsky <[hidden email]> wrote:
I am not including Kafka per se - I am using Flink Kafka connector, that pulls in Kafka.
I tried exclude and it failed.

I can’t quite shade Kafka and it does not seem like the right thing to do.
I tried to see where it is loaded from, and its my jar, but I see its being loaded twice when it is in Lib.

You guys should be able to easily reproduce it on any Kafka sample that you have
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 27, 2019, at 2:10 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

1. I assume you’ve tried marking the Kafka dependencies as “provided”, and that also failed, yes?

2. Did you try shading the Kafka dependencies?

— Ken
PS - Moving this conversation back to the user list.
On Feb 27, 2019, at 2:03 PM, Boris Lublinsky <[hidden email]> wrote:
Guys, please,
I do still need help with this one
It does work if I put my jar into a random directory, but fails if I put it into Lib.
And I do need to put it into lib, because standalone-job.sh does not take a jar, it assumes a jar to be in lib

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 26, 2019, at 7:33 AM, Boris Lublinsky <[hidden email]> wrote:
Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe:config:1.3.3

[info] +-joda-time:joda-time:2.10.1

[info] +-org.joda:joda-convert:2.1.2

[info] +-org.typelevel:cats_2.11:0.9.0 [S]

[info] +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] |

[info] +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | +-org.scala-sbt:test-interface:1.0

[info] |

[info] +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] +-org.scala-lang:scala-reflect:2.11.12 [S]

[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

Stream Processing | Event Driven | Real Time

--

Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--
Data Artisans GmbH Registered at Amtsgericht Charlottenburg: HRB 158244 B Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen
--------------------------
Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--
Konstantin Knauf | Solutions Architect
+49 160 91394525

Follow us @VervericaData
--
Join Flink Forward - The Apache Flink Conference
Stream Processing | Event Driven | Real Time
--
Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
--
Data Artisans GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

Konstantin Knauf-2

Re: Starting Flink cluster and running a job

Hi Boris,

in the first case it is linked into the lib directory, in the second case it is located in the lib directory. Both work. My job uses both the Kafka producer as well the Kafka consumer and both are processing records.

Best,

Konstantin

On Wed, Mar 6, 2019 at 3:16 PM Boris Lublinsky <[hidden email]> wrote:

Thanks Konstanin,
A couple of question?
1. Is your fat jar in lib directory? If it is not it works fine
2. The error occurs only when you start pushing traffic on Kafka
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Mar 6, 2019, at 4:27 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

I was not able tot reproduce your problem. I am using the docker-entrypoint.sh and Dockerfile from the flink-container project [1].

The content of my fat-jar:

flinkShadowJar
+--- project :fe-flink-common
+--- org.apache.flink:flink-metrics-influxdb_2.11:1.8-SNAPSHOT
+--- org.apache.flink:flink-metrics-slf4j:1.7.2
+--- org.apache.flink:flink-connector-kafka_2.11:1.7.2
|    +--- org.apache.flink:flink-connector-kafka-base_2.11:1.7.2
|    \--- org.apache.kafka:kafka-clients:2.0.1
|         +--- org.lz4:lz4-java:1.4.1
|         \--- org.xerial.snappy:snappy-java:1.1.7.1
\--- org.apache.flink:flink-s3-fs-presto:1.7.2

In the standard Docker image the job.jar is "only" linked into the Flink lib directory. I also tested it with a modified Dokerfile, which copies the job.jar into the lib directory of Flink.

bash-4.4$ ls -lia lib
total 135140
611154 drwxrwxr-x    1 flink    flink         4096 Mar 6 10:20 .
606092 drwxrwxr-x    1 flink    flink         4096 Feb 11 15:38 ..
26477916 -rw-r--r--    1 flink    flink     93445474 Feb 11 15:38 flink-dist_2.11-1.7.2.jar
26477917 -rw-r--r--    1 flink    flink       141937 Feb 11 15:37 flink-python_2.11-1.7.2.jar
26477525 -rw-r--r--    1 flink    flink     44278062 Mar 6 10:20 job.jar
26477918 -rw-rw-r--    1 flink    flink       489884 Feb 11 14:32 log4j-1.2.17.jar
26477919 -rw-rw-r--    1 flink    flink         9931 Feb 11 14:32 slf4j-log4j12-1.7.15.jar

This also works. In that case you only need to make sure, that the job.jar is owned by the flink user by epxlicitly changing the ownership in the Dockerfile. Given your description of the Dockerfile, I suspect this is the problem.

Cheers,

Konstantin

[1] https://github.com/apache/flink/tree/release-1.7.2/flink-container
On Wed, Feb 27, 2019 at 11:19 PM Boris Lublinsky <[hidden email]> wrote:
I am not including Kafka per se - I am using Flink Kafka connector, that pulls in Kafka.
I tried exclude and it failed.

I can’t quite shade Kafka and it does not seem like the right thing to do.
I tried to see where it is loaded from, and its my jar, but I see its being loaded twice when it is in Lib.

You guys should be able to easily reproduce it on any Kafka sample that you have
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 27, 2019, at 2:10 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

1. I assume you’ve tried marking the Kafka dependencies as “provided”, and that also failed, yes?

2. Did you try shading the Kafka dependencies?

— Ken
PS - Moving this conversation back to the user list.
On Feb 27, 2019, at 2:03 PM, Boris Lublinsky <[hidden email]> wrote:
Guys, please,
I do still need help with this one
It does work if I put my jar into a random directory, but fails if I put it into Lib.
And I do need to put it into lib, because standalone-job.sh does not take a jar, it assumes a jar to be in lib

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 26, 2019, at 7:33 AM, Boris Lublinsky <[hidden email]> wrote:
Any progress on this one?

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 24, 2019, at 5:16 PM, Boris Lublinsky <[hidden email]> wrote:
And there are more explanations and concerns there
It turns out that the execution depends on where my jar is located.
If I put it in lib directory (I need this to be able to run bin/standalone-job.sh )
It fails. With the same error.

Currently I have the following in this directory
fdp-flink-taxiride-assembly-2.0.0.jar flink-metrics-prometheus-1.7.2.jar flink-queryable-state-runtime_2.11-1.7.2.jar log4j-1.2.17.jar
flink-dist_2.11-1.7.2.jar flink-python_2.11-1.7.2.jar flink-table_2.11-1.7.2.jar slf4j-log4j12-1.7.15.jar

And no one of them seem to directly contain Kafka (except for my jar fdp-flink-taxiride-assembly-2.0.0.jar)

But id I move my jar in any other directory it works fine.
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 23, 2019, at 11:40 AM, Boris Lublinsky <[hidden email]> wrote:
And its working now.
Sorry about all confusion.
The root cause of the problem was that in “standard” Link image directory /opt/flink/log does not have write permissions and as a result the local cluster was never created

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 9:13 AM, Dawid Wysakowicz <[hidden email]> wrote:
Hi,
One additional question, how do you actually build the docker image? How do you put the user jar into the container? Maybe you added extra kafka connector to the cluster classpath? Have you checked what is on the classpath of a running taskmanager?

Best,
Dawid

On 22/02/2019 15:44, Boris Lublinsky wrote:
Gordon, I double checked it several times. Here is the list

Columns are

[info] - Jar-Size including dependencies

[info] - Jar-Size

[info] - Number of transitive dependencies

[info] - Number of direct dependencies

[info] - ModuleID

[info] Done updating.

[info] TotSize JarSize #TDe #Dep Module

[info] 27.988 MB ------- MB 33 2 lightbend:fdp-flink-taxiride_2.11:2.0.0

[info] 19.632 MB ------- MB 24 6 lightbend:support_2.11:2.0.0

[info] 17.675 MB 0.000 MB 16 9 org.typelevel:cats_2.11:0.9.0

[info] 17.389 MB 1.182 MB 13 9 org.typelevel:cats-laws_2.11:0.9.0

[info] 13.115 MB 0.286 MB 7 4 org.typelevel:cats-free_2.11:0.9.0

[info] 12.830 MB 0.000 MB 7 4 org.typelevel:cats-jvm_2.11:0.9.0

[info] 12.830 MB 3.403 MB 6 4 org.typelevel:cats-core_2.11:0.9.0

[info] 8.397 MB 0.068 MB 8 5 org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] 8.175 MB 1.889 MB 4 4 org.apache.kafka:kafka-clients:2.1.0

[info] 7.973 MB 0.212 MB 7 4 org.typelevel:cats-kernel-laws_2.11:0.9.0

[info] 4.834 MB 0.007 MB 4 2 org.typelevel:cats-macros_2.11:0.9.0

[info] 4.746 MB 0.082 MB 2 2 com.typesafe.scala-logging:scala-logging_2.11:3.9.0

[info] 4.658 MB 0.035 MB 1 1 org.typelevel:machinist_2.11:0.6.1

[info] 4.623 MB 4.623 MB 0 0 org.scala-lang:scala-reflect:2.11.12

[info] 4.592 MB 4.592 MB 0 0 org.typelevel:cats-kernel_2.11:0.9.0

[info] 3.714 MB 3.714 MB 0 0 com.github.luben:zstd-jni:1.3.5-4

[info] 3.152 MB 0.043 MB 2 1 org.typelevel:discipline_2.11:0.7.2

[info] 3.109 MB 3.094 MB 1 1 org.scalacheck:scalacheck_2.11:1.13.4

[info] 2.019 MB 2.019 MB 0 0 org.xerial.snappy:snappy-java:1.1.7.2

[info] 0.803 MB 0.290 MB 2 2 ch.qos.logback:logback-classic:1.2.3

[info] 0.641 MB 0.641 MB 0 0 joda-time:joda-time:2.10.1

[info] 0.512 MB 0.512 MB 0 0 org.lz4:lz4-java:1.5.0

[info] 0.472 MB 0.472 MB 0 0 ch.qos.logback:logback-core:1.2.3

[info] 0.286 MB 0.286 MB 0 0 com.typesafe:config:1.3.3

[info] 0.195 MB 0.114 MB 3 3 org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] 0.170 MB 0.167 MB 1 1 com.github.mpilquist:simulacrum_2.11:0.10.0

[info] 0.145 MB 0.145 MB 0 0 org.joda:joda-convert:2.1.2

[info] 0.041 MB 0.041 MB 0 0 org.slf4j:slf4j-api:1.7.25

[info] 0.033 MB 0.033 MB 0 0 com.google.code.findbugs:jsr305:1.3.9

[info] 0.016 MB 0.002 MB 2 1 org.typelevel:catalysts-platform_2.11:0.0.5

[info] 0.015 MB 0.012 MB 1 1 org.typelevel:catalysts-macros_2.11:0.0.5

[info] 0.015 MB 0.015 MB 0 0 org.scala-sbt:test-interface:1.0

[info] 0.007 MB 0.007 MB 0 0 org.apache.flink:force-shading:1.7.1

[info] 0.003 MB 0.003 MB 0 0 org.typelevel:macro-compat_2.11:1.1.1

And here is another view

[info] lightbend:fdp-flink-taxiride_2.11:2.0.0 [S]

[info] +-lightbend:support_2.11:2.0.0 [S]

[info] | +-ch.qos.logback:logback-classic:1.2.3

[info] | | +-ch.qos.logback:logback-core:1.2.3

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | | +-org.slf4j:slf4j-api:1.7.25

[info] | |

[info] | +-com.typesafe:config:1.3.3

[info] | +-joda-time:joda-time:2.10.1

[info] | +-org.joda:joda-convert:2.1.2

[info] | +-org.typelevel:cats_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | | |

[info] | | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | | +-org.scala-sbt:test-interface:1.0

[info] | | | |

[info] | | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.apache.flink:flink-connector-kafka_2.11:1.7.1

[info] +-com.google.code.findbugs:jsr305:1.3.9

[info] +-org.apache.flink:flink-connector-kafka-base_2.11:1.7.1

[info] | +-com.google.code.findbugs:jsr305:1.3.9

[info] | +-org.apache.flink:force-shading:1.7.1

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-org.apache.flink:force-shading:1.7.1

[info] +-org.apache.kafka:kafka-clients:2.1.0

[info] | +-com.github.luben:zstd-jni:1.3.5-4

[info] | +-org.lz4:lz4-java:1.5.0

[info] | +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] | +-org.xerial.snappy:snappy-java:1.1.7.2

[info] |

[info] +-org.slf4j:slf4j-api:1.7.15 (evicted by: 1.7.25)

[info] +-org.slf4j:slf4j-api:1.7.25

[info]

[info] Done updating.

[info] lightbend:support_2.11:2.0.0 [S]

[info] +-ch.qos.logback:logback-classic:1.2.3

[info] | +-ch.qos.logback:logback-core:1.2.3

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe.scala-logging:scala-logging_2.11:3.9.0 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | +-org.slf4j:slf4j-api:1.7.25

[info] |

[info] +-com.typesafe:config:1.3.3

[info] +-joda-time:joda-time:2.10.1

[info] +-org.joda:joda-convert:2.1.2

[info] +-org.typelevel:cats_2.11:0.9.0 [S]

[info] +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] |

[info] +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-free_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-jvm_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | +-org.scala-sbt:test-interface:1.0

[info] |

[info] +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] +-org.typelevel:cats-laws_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:cats-core_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | | |

[info] | | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:cats-kernel-laws_2.11:0.9.0 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | | +-org.scala-sbt:test-interface:1.0

[info] | | |

[info] | | +-org.typelevel:catalysts-platform_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:catalysts-macros_2.11:0.0.5 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:cats-kernel_2.11:0.9.0 [S]

[info] | +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | | |

[info] | | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] | |

[info] | +-org.typelevel:discipline_2.11:0.7.2 [S]

[info] | | +-org.scalacheck:scalacheck_2.11:1.13.4 [S]

[info] | | +-org.scala-sbt:test-interface:1.0

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:cats-macros_2.11:0.9.0 [S]

[info] | +-com.github.mpilquist:simulacrum_2.11:0.10.0 [S]

[info] | | +-org.typelevel:macro-compat_2.11:1.1.1 [S]

[info] | |

[info] | +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] | +-org.scala-lang:scala-reflect:2.11.12 [S]

[info] |

[info] +-org.typelevel:machinist_2.11:0.6.1 [S]

[info] +-org.scala-lang:scala-reflect:2.11.12 [S]

[info]
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 22, 2019, at 12:33 AM, Tzu-Li (Gordon) Tai <[hidden email]> wrote:
Hi,

I haven't seen this problem for Flink 1.6.x / 1.7.x, so it shouldn't be a reoccurrence of FLINK-8741.
I've double checked the used classloaders in the Kafka connector, they seem to be correct.

The fact that it works correctly in IntelliJ, but not when packaged, suggests that there could be some conflicting dependencies in the packaged jar.

Could you check the actual resolved dependency tree of the project, and see if there are multiple versions of some dependency related to Kafka being pulled in? For Maven for example, that would be "mvn dependency:tree".

Cheers,
Gordon
On Thu, Feb 21, 2019 at 10:49 PM Boris Lublinsky <[hidden email]> wrote:
The relevant dependencies are
val flinkScala            =      "org.apache.flink"             %%   "flink-scala"                    % flinkVersion % "provided"
val flinkStreamingScala   =      "org.apache.flink"             %%   "flink-streaming-scala"          % flinkVersion % "provided"
val flinkKafka            =      "org.apache.flink"             %%   "flink-connector-kafka"          % flinkVersion exclude("org.slf4j", "slf4j-log4j12") 
I am using SBT
I tried both connector-kafka and connector-kaka-11 - same result

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 21, 2019, at 1:38 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

can you the relevant parts (dependencies) of your pom.xml? Did you also try without fixing the Kafka version, i.e. running with the Kafka client version provided by the Kafka connector of Flink? Gordon (cc) dealt with FLINK-8741.

@Gordon: have you seen this issue with 1.6/1.7 before?

Cheers,

Konstantin
On Thu, Feb 21, 2019 at 2:19 AM Boris Lublinsky <[hidden email]> wrote:
I found some more details on this

The same error for the same application was reported about a year ago http://mail-archives.apache.org/mod_mbox/flink-user/201802.mbox/%3CCAE7GCT4pF74LwyY=tiVzhQUQ50TkJJaWfhaw+5phCSx+VOshFQ@...%3E

And was due to https://issues.apache.org/jira/browse/FLINK-8741

It looks like the same issue is back in 1.7.1 and 1.6.3. I tried with both latest kaffka-connector

And Kafka-connector-011

Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 7:02 PM, Ken Krugler <[hidden email]> wrote:
Hi Boris,

I haven’t seen this exact error, but I have seen similar errors caused by multiple versions of jars on the classpath.

When I’ve run into this particular "XXX is not an instance of YYY" problem, it often seems to be caused by a jar that I should have marked as provided in my pom.

Though I’m typically running on a YARN cluster, not w/K8s, so maybe this doesn’t apply.

— Ken

PS - I assume you’ve been reading https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html
On Feb 19, 2019, at 4:34 PM, Boris Lublinsky <[hidden email]> wrote:
Konstantin,
After experimenting with this for a while, I got to the root cause of the problem

I am running a version of a Taxi ride travel prediction as my sample.

It works fine in Intellij,

But when I am trying to put it in the docker (standard Debian 1.7 image)

It fails with a following error

The program finished with the following exception:

org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: 9340e7669e7344ab827fef4ddb5ba73d)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:268)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:487)

at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)

at org.apache.flink.streaming.api.scala.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.scala:654)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction$.main(TravelTimePrediction.scala:89)

at com.lightbend.fdp.sample.flink.app.TravelTimePrediction.main(TravelTimePrediction.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)

at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)

at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:427)

at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:813)

at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:287)

at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213)

at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1050)

at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)

at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)

at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:146)

at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:265)

... 19 more

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka producer

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:416)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:288)

at org.apache.flink.streaming.connectors.kafka.internal.FlinkKafkaProducer.<init>(FlinkKafkaProducer.java:116)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initProducer(FlinkKafkaProducer011.java:944)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initNonTransactionalProducer(FlinkKafkaProducer011.java:940)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:696)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.beginTransaction(FlinkKafkaProducer011.java:94)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.beginTransactionInternal(TwoPhaseCommitSinkFunction.java:384)

at org.apache.flink.streaming.api.functions.sink.TwoPhaseCommitSinkFunction.initializeState(TwoPhaseCommitSinkFunction.java:375)

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer011.initializeState(FlinkKafkaProducer011.java:847)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.tryRestoreFunction(StreamingFunctionUtils.java:178)

at org.apache.flink.streaming.util.functions.StreamingFunctionUtils.restoreFunctionState(StreamingFunctionUtils.java:160)

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.initializeState(AbstractUdfStreamOperator.java:96)

at org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:278)

at org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:738)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:289)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:704)

at java.lang.Thread.run(Thread.java:748)

Caused by: org.apache.kafka.common.KafkaException: org.apache.kafka.common.serialization.ByteArraySerializer is not an instance of org.apache.kafka.common.serialization.Serializer

at org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:248)

at org.apache.kafka.clients.producer.KafkaProducer.<init>(KafkaProducer.java:327)

... 17 more

The closest that I found https://stackoverflow.com/questions/37363119/kafka-producer-org-apache-kafka-common-serialization-stringserializer-could-no

Which talks about class loader. (I tried there solution, but it did not help)

I looked at the loading and I see that the pair of these 2 classes is loaded from my uber jar, but twice.

Have you guys seen this error before?

Any suggestion?
Boris Lublinsky
FDP Architect
[hidden email]
https://www.lightbend.com/
On Feb 19, 2019, at 4:50 AM, Konstantin Knauf <[hidden email]> wrote:
Hi Boris,

without looking at the entrypoint in much detail, generally there should not be a race condition there:

* if the taskmanagers can not connect to the resourcemanager they will retry (per default the timeout is 5 mins)

* if the JobManager does not get enough resources from the ResourceManager it will also wait for the resources/slots to provided. The timeout there is also 5 minutes, I think.

So, this should actually be pretty robust as long as the Taskmanager containers can reach the Jobmanager eventually.

Could you provide the Taskmanager/JobManager logs for such a failure case?

Cheers,

Konstantin
On Mon, Feb 18, 2019 at 1:07 AM Boris Lublinsky <[hidden email]> wrote:
Following https://github.com/apache/flink/tree/release-1.7/flink-container/docker
I have created an entry point, which looks like follows:
#!/bin/sh

################################################################################
#   from https://github.com/apache/flink/blob/release-1.7/flink-container/docker/docker-entrypoint.sh
#   and https://github.com/docker-flink/docker-flink/blob/63b19a904fa8bfd1322f1d59fdb226c82b9186c7/1.7/scala_2.11-alpine/docker-entrypoint.sh
################################################################################

# If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-$(hostname -f)}

drop_privs_cmd() {
    if [ $(id -u) != 0 ]; then
        # Don't need to drop privs if EUID != 0
        return
    elif [ -x /sbin/su-exec ]; then
        # Alpine
        echo su-exec flink
    else
        # Others
        echo gosu flink
    fi
}

JOB_MANAGER="jobmanager"
TASK_MANAGER="taskmanager"

CMD="$1"
shift

if [ "${CMD}" = "help" ]; then
    echo "Usage: $(basename $0) (${JOB_MANAGER}|${TASK_MANAGER}|help)"
    exit 0
elif [ "${CMD}" = "${JOB_MANAGER}" -o "${CMD}" = "${TASK_MANAGER}" ]; then
    if [ "${CMD}" = "${TASK_MANAGER}" ]; then
        TASK_MANAGER_NUMBER_OF_TASK_SLOTS=${TASK_MANAGER_NUMBER_OF_TASK_SLOTS:-$(grep -c ^processor /proc/cpuinfo)}

        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: $TASK_MANAGER_NUMBER_OF_TASK_SLOTS/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"

        echo "Starting Task Manager"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"
        exec $(drop_privs_cmd) "$FLINK_HOME/bin/taskmanager.sh" start-foreground
    else
        sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" "$FLINK_HOME/conf/flink-conf.yaml"
        echo "blob.server.port: 6124" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "query.server.port: 6125" >> "$FLINK_HOME/conf/flink-conf.yaml"
        echo "config file: " && grep '^[^\n#]' "$FLINK_HOME/conf/flink-conf.yaml"

        if [ -z "$1" ]; then
           exec $(drop_privs_cmd) "$FLINK_HOME/bin/jobmanager.sh" start-foreground "$@"
        else
            exec $FLINK_HOME/bin/standalone-job.sh start-foreground "$@"
        fi
    fi
fi

exec "$@"
It does work for all the cases, except running standalone job.
The problem, the way I understand it, is a racing condition.

In kubernetes it takes several attempts for establish connection between Job and Task manager, while standalone-job.sh

tries to start a job immediately once the cluster is created (before connection is established).

Is there a better option to implement it starting a job on container startup?
--

Konstantin Knauf | Solutions Architect

+49 160 91394525
--------------------------

Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

Stream Processing | Event Driven | Real Time

--

Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--
Data Artisans GmbH Registered at Amtsgericht Charlottenburg: HRB 158244 B Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen
--------------------------
Ken Krugler
+1 530-210-6378
http://www.scaleunlimited.com
Custom big data solutions & training
Flink, Solr, Hadoop, Cascading & Cassandra
--
Konstantin Knauf | Solutions Architect
+49 160 91394525

Follow us @VervericaData
--
Join Flink Forward - The Apache Flink Conference
Stream Processing | Event Driven | Real Time
--
Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany
--
Data Artisans GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

--

Konstantin Knauf | Solutions Architect

+49 160 91394525

Follow us @VervericaData

--

Join Flink Forward - The Apache Flink Conference

Stream Processing | Event Driven | Real Time

--

Data Artisans GmbH | Invalidenstrasse 115, 10115 Berlin, Germany

--

Data Artisans GmbH
Registered at Amtsgericht Charlottenburg: HRB 158244 B
Managing Directors: Dr. Kostas Tzoumas, Dr. Stephan Ewen

12