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https://issues.apache.org/jira/browse/BEAM-6289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16729643#comment-16729643
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Ismaël Mejía commented on BEAM-6289:
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[~mxm] Reassigned to you to see if you can eventually give us a hint. If the
issue is not Flink related but Cassandra related (which does not seem to be the
case) please reassign it to me.
> Running a join on two Cassandra tables using FlinkRunner fails
> --------------------------------------------------------------
>
> Key: BEAM-6289
> URL: https://issues.apache.org/jira/browse/BEAM-6289
> Project: Beam
> Issue Type: Bug
> Components: io-java-cassandra, runner-flink
> Affects Versions: 2.8.0, 2.9.0
> Environment: Tested on Ubuntu 18
> Beam 2.8
> Tested with Flink:
> 1) [local]
> 2) Cluster inside a K8S cluster on minikube
> 3) Cluster inside a K8S cluster on GCP
> Tested using Cassandra [cqlsh 5.0.1 | Cassandra 3.11.3 | CQL spec 3.4.4 |
> Native protocol v4]:
> 1) In a local container
> 2) Cluster inside a K8S cluster on minikube
> 3) Cluster inside a K8S cluster on GCP
> Reporter: Shahar Frank
> Assignee: Maximilian Michels
> Priority: Critical
> Labels: FlinkRunner, beam, bug, cassandra, flink, join
>
> Can't make a simple join on two Cassandra tables when using FlinkRunner.
> The same code works with a DirectRunner fails when used with FlinkRunner
> giving these (as well as many other) errors:
> {code:java}
> Caused by: akka.pattern.AskTimeoutException: Ask timed out on
> [Actor[akka://flink/user/dispatchere1f5abe7-6299-43ea-9182-24a2193e078f#-1757043920]]
> after [10000 ms]. Sender[null] sent message of type
> "org.apache.flink.runtime.rpc.messages.LocalFencedMessage".
> at
> akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:604)
> at akka.actor.Scheduler$$anon$4.run(Scheduler.scala:126)
> at
> scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:601)
> at
> scala.concurrent.BatchingExecutor$class.execute(BatchingExecutor.scala:109)
> at
> scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:599)
> at
> akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:329)
> at
> akka.actor.LightArrayRevolverScheduler$$anon$4.executeBucket$1(LightArrayRevolverScheduler.scala:280)
> at
> akka.actor.LightArrayRevolverScheduler$$anon$4.nextTick(LightArrayRevolverScheduler.scala:284)
> at
> akka.actor.LightArrayRevolverScheduler$$anon$4.run(LightArrayRevolverScheduler.scala:236)
> at java.lang.Thread.run(Thread.java:748)
> {code}
>
> The code can be found [here|https://github.com/srfrnk/beam-playground]
> Steps to reproduce:
> # Clone the repo to a linux (I;m on Ubuntu 18 but any *nix system would
> probably work - i.e. repl.it)
> # Follow the README to set up a Cassandra container + schema
> # Run with
> {code}
> gradle --console=plain join-from-cassandra -Drunner=flink > output/build.log
> 2>&1{code}
> to use FlinkRunner. See error in log at ./output/build.log
> # Run with
> {code}
> gradle --console=plain join-from-cassandra -Drunner=direct > output/build.log
> 2>&1{code}
> to use DirectRunner. See error in log at ./output/build.log
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