[jira] [Commented] (FLINK-14742) Unstable tests TaskExecutorTest#testSubmitTaskBeforeAcceptSlot

["Kostas Kloudas (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-14742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016912#comment-17016912 ] 

Kostas Kloudas commented on FLINK-14742:
----------------------------------------

If you run it in a loop until failure (configurable in Intellij), you end up having this exception:


{code:java}
 ERROR org.apache.flink.runtime.rpc.akka.AkkaRpcActor  - Caught exception while executing runnable in main thread.
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)
	at java.util.HashMap$ValueIterator.next(HashMap.java:1471)
	at org.apache.flink.runtime.taskexecutor.slot.TaskSlotTable.createSlotReport(TaskSlotTable.java:213)
	at org.apache.flink.runtime.taskexecutor.TaskExecutor.establishResourceManagerConnection(TaskExecutor.java:1030)
	at org.apache.flink.runtime.taskexecutor.TaskExecutor.access$1700(TaskExecutor.java:155)
	at org.apache.flink.runtime.taskexecutor.TaskExecutor$ResourceManagerRegistrationListener.lambda$onRegistrationSuccess$0(TaskExecutor.java:1725)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:397)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:190)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:152)
	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26)
	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21)
	at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123)
	at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
	at akka.actor.Actor$class.aroundReceive(Actor.scala:517)
	at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592)
	at akka.actor.ActorCell.invoke(ActorCell.scala:561)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258)
	at akka.dispatch.Mailbox.run(Mailbox.scala:225)
	at akka.dispatch.Mailbox.exec(Mailbox.scala:235)
	at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
{code}
 

> Unstable tests TaskExecutorTest#testSubmitTaskBeforeAcceptSlot
> --------------------------------------------------------------
>
>                 Key: FLINK-14742
>                 URL: https://issues.apache.org/jira/browse/FLINK-14742
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.10.0
>            Reporter: Zili Chen
>            Assignee: Kostas Kloudas
>            Priority: Critical
>             Fix For: 1.10.0
>
>
> deadlock.
> {code}
> "main" #1 prio=5 os_prio=0 tid=0x00007f1f8800b800 nid=0x356 waiting on condition [0x00007f1f8e65c000]
>    java.lang.Thread.State: WAITING (parking)
> 	at sun.misc.Unsafe.park(Native Method)
> 	- parking to wait for  <0x0000000086e9e9c0> (a java.util.concurrent.CompletableFuture$Signaller)
> 	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 	at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693)
> 	at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
> 	at java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729)
> 	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
> 	at org.apache.flink.runtime.taskexecutor.TaskExecutorTest.testSubmitTaskBeforeAcceptSlot(TaskExecutorTest.java:1108)
> 	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)
> {code}
> full log https://api.travis-ci.org/v3/job/611275566/log.txt



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