Flink Elasticsearch Connector: Lucene Error message

[Fabian Wollert]

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Timo Walther]

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Fabian Wollert]

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Aljoscha Krettek]

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Fabian Wollert]

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Aljoscha Krettek]

Hi,

There was also a problem in releasing the ES 5 connector with Flink 1.3.0. You only said you’re using Flink 1.3, would that be 1.3.0 or 1.3.1?

Best,

Aljoscha

On 16. Jul 2017, at 13:42, Fabian Wollert <[hidden email]> wrote:

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Fabian Wollert]

1.3.0, but i only need the ES 2.X connector working right now, since that's the elasticsearch version we're using. another option would be to upgrade to ES 5 (at elast on dev) to see if its working as well, but that sounds not like fixing the problem for me :-D

Cheers

Fabian

2017-07-16 15:47 GMT+02:00 Aljoscha Krettek <[hidden email]>:

Hi,

There was also a problem in releasing the ES 5 connector with Flink 1.3.0. You only said you’re using Flink 1.3, would that be 1.3.0 or 1.3.1?

Best,

Aljoscha

On 16. Jul 2017, at 13:42, Fabian Wollert <[hidden email]> wrote:

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Tzu-Li (Gordon) Tai]

Hi,

I would also recommend checking the `lib/` folder of your Flink installation to see if there is any dangling old version jars that you added there.

I did a quick dependency check on the Elasticsearch 2 connector, it is correctly pulling in Lucene 5.5.0 only, so this dependency should not pop up given that the user code is packaged properly.

As of now, I would guess that it is some dependency conflict caused by either the reasons mentioned above, or some other dependency in the user jar is pulling in a conflicting Lucene version.

Of course, if you doubt otherwise and that isn’t the case, let us know the result of your checks so we can investigate further! Thanks.

Cheers,

Gordon

On 17 July 2017 at 3:38:17 PM, Fabian Wollert ([hidden email]) wrote:

1.3.0, but i only need the ES 2.X connector working right now, since that's the elasticsearch version we're using. another option would be to upgrade to ES 5 (at elast on dev) to see if its working as well, but that sounds not like fixing the problem for me :-D

Cheers

Fabian

2017-07-16 15:47 GMT+02:00 Aljoscha Krettek <[hidden email]>:

Hi,

There was also a problem in releasing the ES 5 connector with Flink 1.3.0. You only said you’re using Flink 1.3, would that be 1.3.0 or 1.3.1?

Best,

Aljoscha

On 16. Jul 2017, at 13:42, Fabian Wollert <[hidden email]> wrote:

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Fabian Wollert]

TL;DR: remove all lucene and elasticsearch libs in your flink env and just use maven to manage dependencies, when working with the flink elasticsearch connector.

so in the first place i deleted the libs in the folder to see if its working, but it did not. then we thought if maybe flink loads already the libs at startup, so i packaged our flink appliance again, with out the old lucene lib which was still loaded, and then redeployed, and et voilà, it worked then!

thanks guys for the investigation help!

Cheers

2017-07-17 9:58 GMT+02:00 Tzu-Li (Gordon) Tai <[hidden email]>:

Hi,

I would also recommend checking the `lib/` folder of your Flink installation to see if there is any dangling old version jars that you added there.

I did a quick dependency check on the Elasticsearch 2 connector, it is correctly pulling in Lucene 5.5.0 only, so this dependency should not pop up given that the user code is packaged properly.

As of now, I would guess that it is some dependency conflict caused by either the reasons mentioned above, or some other dependency in the user jar is pulling in a conflicting Lucene version.

Of course, if you doubt otherwise and that isn’t the case, let us know the result of your checks so we can investigate further! Thanks.

Cheers,

Gordon

On 17 July 2017 at 3:38:17 PM, Fabian Wollert ([hidden email]) wrote:

1.3.0, but i only need the ES 2.X connector working right now, since that's the elasticsearch version we're using. another option would be to upgrade to ES 5 (at elast on dev) to see if its working as well, but that sounds not like fixing the problem for me :-D

Cheers

Fabian

2017-07-16 15:47 GMT+02:00 Aljoscha Krettek <[hidden email]>:

Hi,

There was also a problem in releasing the ES 5 connector with Flink 1.3.0. You only said you’re using Flink 1.3, would that be 1.3.0 or 1.3.1?

Best,

Aljoscha

On 16. Jul 2017, at 13:42, Fabian Wollert <[hidden email]> wrote:

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):

[Tzu-Li (Gordon) Tai]

Glad to hear it’s working!

Yes, normally you should avoid using the lib folder to resolve these dependency issues and rely only on user jar packaging when working with Flink connectors.

- Gordon

On 17 July 2017 at 9:44:20 PM, Fabian Wollert ([hidden email]) wrote:

TL;DR: remove all lucene and elasticsearch libs in your flink env and just use maven to manage dependencies, when working with the flink elasticsearch connector.

so in the first place i deleted the libs in the folder to see if its working, but it did not. then we thought if maybe flink loads already the libs at startup, so i packaged our flink appliance again, with out the old lucene lib which was still loaded, and then redeployed, and et voilà, it worked then!

thanks guys for the investigation help!

Cheers

2017-07-17 9:58 GMT+02:00 Tzu-Li (Gordon) Tai <[hidden email]>:

Hi,

I would also recommend checking the `lib/` folder of your Flink installation to see if there is any dangling old version jars that you added there.

I did a quick dependency check on the Elasticsearch 2 connector, it is correctly pulling in Lucene 5.5.0 only, so this dependency should not pop up given that the user code is packaged properly.

As of now, I would guess that it is some dependency conflict caused by either the reasons mentioned above, or some other dependency in the user jar is pulling in a conflicting Lucene version.

Of course, if you doubt otherwise and that isn’t the case, let us know the result of your checks so we can investigate further! Thanks.

Cheers,

Gordon

On 17 July 2017 at 3:38:17 PM, Fabian Wollert ([hidden email]) wrote:

1.3.0, but i only need the ES 2.X connector working right now, since that's the elasticsearch version we're using. another option would be to upgrade to ES 5 (at elast on dev) to see if its working as well, but that sounds not like fixing the problem for me :-D

Cheers

Fabian

2017-07-16 15:47 GMT+02:00 Aljoscha Krettek <[hidden email]>:

Hi,

There was also a problem in releasing the ES 5 connector with Flink 1.3.0. You only said you’re using Flink 1.3, would that be 1.3.0 or 1.3.1?

Best,

Aljoscha

On 16. Jul 2017, at 13:42, Fabian Wollert <[hidden email]> wrote:

Hi Aljoscha,

we are running Flink in Stand alone mode, inside Docker in AWS. I will check tomorrow the dependencies, although i'm wondering: I'm running Flink 1.3 averywhere and the appropiate ES connector which was only released with 1.3, so it's weird where this dependency mix up comes from ... let's see ...

Cheers

Fabian

2017-07-14 11:15 GMT+02:00 Aljoscha Krettek <[hidden email]>:

This kind of error almost always hints at a dependency clash, i.e. there is some version of this code in the class path that clashed with the version that the Flink program uses. That’s why it works in local mode, where there are probably not many other dependencies and not in cluster mode.

How are you running it on the cluster? Standalone, YARN?

Best,

Aljoscha

On 13. Jul 2017, at 13:56, Fabian Wollert <[hidden email]> wrote:

Hi Timo, Hi Gordon,

thx for the reply! I checked the connection from both clusters to each other, and i can telnet to the 9300 port of flink, so i think the connection is not an issue here. 

We are currently using in our live env a custom elasticsearch connector, which used some extra lib's deployed on the cluster. i found one lucene lib and deleted it (since all dependencies should be in the flink job jar), but that unfortunately did not help neither ...

Cheers

Fabian

2017-07-13 13:46 GMT+02:00 Timo Walther <[hidden email]>:

Hi Fabian,

I loop in Gordon. Maybe he knows whats happening here.

Regards,
Timo


Am 13.07.17 um 13:26 schrieb Fabian Wollert:

Hi everyone,

I'm trying to make use of the new Elasticsearch Connector. I got a version running locally (with ssh tunnels to my Elasticsearch cluster in AWS) in my IDE, I see the data in Elasticsearch written perfectly, as I want it. As soon as I try to run this on our dev cluster (Flink 1.3.0, running in the same VPC like ) though, i get the following error message (in the sink):