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Nico Kruber commented on FLINK-8517: ------------------------------------ ok, I can reproduce it locally running the test multiple times - possibly a race between {{TaskEventDispatcher#registerPartition}} and {{TaskEventDispatcher#subscribeToEvent}}. I'll investigate further. > StaticlyNestedIterationsITCase.testJobWithoutObjectReuse unstable on Travis > --------------------------------------------------------------------------- > > Key: FLINK-8517 > URL: https://issues.apache.org/jira/browse/FLINK-8517 > Project: Flink > Issue Type: Bug > Components: DataSet API, Tests > Affects Versions: 1.5.0 > Reporter: Till Rohrmann > Priority: Blocker > Labels: test-stability > Fix For: 1.5.0, 1.4.3 > > > The {{StaticlyNestedIterationsITCase.testJobWithoutObjectReuse}} test case > fails on Travis. This exception might be relevant: > {code:java} > org.apache.flink.runtime.client.JobExecutionException: Job execution failed. > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:891) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:834) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:834) > at > scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) > at > scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) > at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39) > at > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415) > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > at > scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) > Caused by: java.lang.IllegalStateException: Partition > 557b069f2b89f8ba599e6ab0956a3f5a@58f1a6b7d8ae10b9141f17c08d06cecb not > registered at task event dispatcher. > at > org.apache.flink.runtime.io.network.TaskEventDispatcher.subscribeToEvent(TaskEventDispatcher.java:107) > at > org.apache.flink.runtime.iterative.task.IterationHeadTask.initSuperstepBarrier(IterationHeadTask.java:242) > at > org.apache.flink.runtime.iterative.task.IterationHeadTask.run(IterationHeadTask.java:266) > at > org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:368) > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703) > at java.lang.Thread.run(Thread.java:748){code} > > https://api.travis-ci.org/v3/job/333360156/log.txt -- This message was sent by Atlassian JIRA (v7.6.3#76005)