[jira] [Created] (FLINK-20412) Collect Result Fetching occasionally fails after a JobManager Failover

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-20412:
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             Summary: Collect Result Fetching occasionally fails after a JobManager Failover
                 Key: FLINK-20412
                 URL: https://issues.apache.org/jira/browse/FLINK-20412
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.12.0
            Reporter: Stephan Ewen


The encountered exception is as blow.

 

The issue can be reproduced by running a test with JobManager failover in a tight loop, for example the FileTextLinesITCase from this PR: [https://github.com/apache/flink/pull/14199]

 
{code:java}
15335 [main] WARN  org.apache.flink.streaming.api.operators.collect.CollectResultFetcher - An exception occurs when fetching query results
java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395) ~[?:?]
        at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999) ~[?:?]
        at org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.sendRequest(CollectResultFetcher.java:163) ~[classes/:?]
        at org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.next(CollectResultFetcher.java:134) [classes/:?]
        at org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:103) [classes/:?]
        at org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:77) [classes/:?]
        at org.apache.flink.streaming.api.datastream.DataStreamUtils.collectRecordsFromUnboundedStream(DataStreamUtils.java:142) [classes/:?]
        at org.apache.flink.connector.file.src.FileSourceTextLinesITCase.testContinuousTextFileSource(FileSourceTextLinesITCase.java:272) [test-classes/:?]
        at org.apache.flink.connector.file.src.FileSourceTextLinesITCase.testContinuousTextFileSourceWithJobManagerFailover(FileSourceTextLinesITCase.java:228) [test-classes/:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit-4.12.jar:4.12]
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit-4.12.jar:4.12]
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit-4.12.jar:4.12]
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) [junit-4.12.jar:4.12]
        at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) [junit-4.12.jar:4.12]
        at org.junit.rules.RunRules.evaluate(RunRules.java:20) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit-4.12.jar:4.12]
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) [junit-4.12.jar:4.12]
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) [junit-4.12.jar:4.12]
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) [junit-4.12.jar:4.12]
        at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48) [junit-4.12.jar:4.12]
        at org.junit.rules.RunRules.evaluate(RunRules.java:20) [junit-4.12.jar:4.12]
        at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
        at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
        at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:?]
        at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:67) [junit-rt.jar:?]
        at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:?]
        at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:?]
Caused by: java.lang.NullPointerException
        at org.apache.flink.streaming.api.operators.collect.CollectSinkOperatorCoordinator.handleCoordinationRequest(CollectSinkOperatorCoordinator.java:107) ~[classes/:?]
        at org.apache.flink.runtime.scheduler.SchedulerBase.deliverCoordinationRequestToCoordinator(SchedulerBase.java:1078) ~[classes/:?]
        at org.apache.flink.runtime.jobmaster.JobMaster.deliverCoordinationRequestToCoordinator(JobMaster.java:771) ~[classes/:?]
        at jdk.internal.reflect.GeneratedMethodAccessor38.invoke(Unknown Source) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:286) ~[classes/:?]
        at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:201) ~[classes/:?]
        at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74) ~[classes/:?]
        at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:154) ~[classes/:?]
        at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123) ~[scala-library-2.11.12.jar:?]
        at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170) ~[scala-library-2.11.12.jar:?]
        at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) ~[scala-library-2.11.12.jar:?]
        at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) ~[scala-library-2.11.12.jar:?]
        at akka.actor.Actor$class.aroundReceive(Actor.scala:517) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.actor.ActorCell.invoke(ActorCell.scala:561) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.Mailbox.run(Mailbox.scala:225) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.Mailbox.exec(Mailbox.scala:235) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
        at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) ~[akka-actor_2.11-2.5.21.jar:2.5.21]
{code}



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