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Flink 1.5.2 query

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Parth Sarathy
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Flink 1.5.2 query

Parth Sarathy
Hi,
  When using flink 1.5.2, “Apache Flink Only” binary
(flink-1.5.2-bin-scala_2.11), following  error is seen in client log:

2018-08-30 10:56:59.129 [main] WARN  org.apache.flink.client.cli.CliFrontend
- Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
java.lang.NoClassDefFoundError:
org/apache/hadoop/yarn/exceptions/YarnException
        at java.lang.Class.forName0(Native Method) ~[na:1.8.0_171]
        at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_171]
        at
org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFrontend.java:1208)
[flink-dist_2.11-1.5.2.jar:1.5.2]
        at
org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFrontend.java:1164)
[flink-dist_2.11-1.5.2.jar:1.5.2]
        at
org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
[flink-dist_2.11-1.5.2.jar:1.5.2]
Caused by: java.lang.ClassNotFoundException:
org.apache.hadoop.yarn.exceptions.YarnException
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
~[na:1.8.0_171]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
~[na:1.8.0_171]
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
~[na:1.8.0_171]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
~[na:1.8.0_171]
        ... 5 common frames omitted

There are no functional failures, but how to avoid this exception in log?

Thanks,
Parth Sarathy




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Chesnay Schepler
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Re: Flink 1.5.2 query

Chesnay Schepler
Cannot be avoided. The CLI eagerly loads client classes for yarn, which
as see fails since the hadoop classes aren't available.
If you don't use YARN you can safely ignore this.

On 03.09.2018 14:37, Parth Sarathy wrote:

> Hi,
>    When using flink 1.5.2, “Apache Flink Only” binary
> (flink-1.5.2-bin-scala_2.11), following  error is seen in client log:
>
> 2018-08-30 10:56:59.129 [main] WARN  org.apache.flink.client.cli.CliFrontend
> - Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
> java.lang.NoClassDefFoundError:
> org/apache/hadoop/yarn/exceptions/YarnException
>          at java.lang.Class.forName0(Native Method) ~[na:1.8.0_171]
>          at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_171]
>          at
> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFrontend.java:1208)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
>          at
> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFrontend.java:1164)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
>          at
> org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
> Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.yarn.exceptions.YarnException
>          at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> ~[na:1.8.0_171]
>          at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> ~[na:1.8.0_171]
>          at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> ~[na:1.8.0_171]
>          at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ~[na:1.8.0_171]
>          ... 5 common frames omitted
>
> There are no functional failures, but how to avoid this exception in log?
>
> Thanks,
> Parth Sarathy
>
>
>
>
> --
> Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
>

Parth Sarathy
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RE: Flink 1.5.2 query

Parth Sarathy
The message is in WARN level and not in INFO or DEBUG level , so our log analysis tool considers this as an issue. Can the CLI print this message in INFO/DEBUG level?

-----Original Message-----
From: Chesnay Schepler [mailto:[hidden email]]
Sent: Monday, September 3, 2018 6:32 PM
To: Parth Sarathy <[hidden email]>; [hidden email]
Subject: Re: Flink 1.5.2 query

Cannot be avoided. The CLI eagerly loads client classes for yarn, which as see fails since the hadoop classes aren't available.
If you don't use YARN you can safely ignore this.

On 03.09.2018 14:37, Parth Sarathy wrote:

> Hi,
>    When using flink 1.5.2, “Apache Flink Only” binary
> (flink-1.5.2-bin-scala_2.11), following  error is seen in client log:
>
> 2018-08-30 10:56:59.129 [main] WARN  
> org.apache.flink.client.cli.CliFrontend
> - Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
> java.lang.NoClassDefFoundError:
> org/apache/hadoop/yarn/exceptions/YarnException
>          at java.lang.Class.forName0(Native Method) ~[na:1.8.0_171]
>          at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_171]
>          at
> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFront
> end.java:1208)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
>          at
> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFron
> tend.java:1164)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
>          at
> org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
> [flink-dist_2.11-1.5.2.jar:1.5.2]
> Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.yarn.exceptions.YarnException
>          at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> ~[na:1.8.0_171]
>          at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> ~[na:1.8.0_171]
>          at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
> ~[na:1.8.0_171]
>          at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> ~[na:1.8.0_171]
>          ... 5 common frames omitted
>
> There are no functional failures, but how to avoid this exception in log?
>
> Thanks,
> Parth Sarathy
>
>
>
>
> --
> Sent from:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
>

Chesnay Schepler
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Re: Flink 1.5.2 query

Chesnay Schepler
You will either have to create a custom Flink build (i.e. there's no
option to change this behavior) or disable all WARN messages by the
CliFrontend class with the logger configuration.

On 03.09.2018 15:21, Sarathy, Parth wrote:

> The message is in WARN level and not in INFO or DEBUG level , so our log analysis tool considers this as an issue. Can the CLI print this message in INFO/DEBUG level?
>
> -----Original Message-----
> From: Chesnay Schepler [mailto:[hidden email]]
> Sent: Monday, September 3, 2018 6:32 PM
> To: Parth Sarathy <[hidden email]>; [hidden email]
> Subject: Re: Flink 1.5.2 query
>
> Cannot be avoided. The CLI eagerly loads client classes for yarn, which as see fails since the hadoop classes aren't available.
> If you don't use YARN you can safely ignore this.
>
> On 03.09.2018 14:37, Parth Sarathy wrote:
>> Hi,
>>     When using flink 1.5.2, “Apache Flink Only” binary
>> (flink-1.5.2-bin-scala_2.11), following  error is seen in client log:
>>
>> 2018-08-30 10:56:59.129 [main] WARN
>> org.apache.flink.client.cli.CliFrontend
>> - Could not load CLI class org.apache.flink.yarn.cli.FlinkYarnSessionCli.
>> java.lang.NoClassDefFoundError:
>> org/apache/hadoop/yarn/exceptions/YarnException
>>           at java.lang.Class.forName0(Native Method) ~[na:1.8.0_171]
>>           at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_171]
>>           at
>> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLine(CliFront
>> end.java:1208)
>> [flink-dist_2.11-1.5.2.jar:1.5.2]
>>           at
>> org.apache.flink.client.cli.CliFrontend.loadCustomCommandLines(CliFron
>> tend.java:1164)
>> [flink-dist_2.11-1.5.2.jar:1.5.2]
>>           at
>> org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1090)
>> [flink-dist_2.11-1.5.2.jar:1.5.2]
>> Caused by: java.lang.ClassNotFoundException:
>> org.apache.hadoop.yarn.exceptions.YarnException
>>           at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
>> ~[na:1.8.0_171]
>>           at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
>> ~[na:1.8.0_171]
>>           at
>> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
>> ~[na:1.8.0_171]
>>           at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
>> ~[na:1.8.0_171]
>>           ... 5 common frames omitted
>>
>> There are no functional failures, but how to avoid this exception in log?
>>
>> Thanks,
>> Parth Sarathy
>>
>>
>>
>>
>> --
>> Sent from:
>> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
>>

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