Uploaded image for project: 'Flink'
  1. Flink
  2. FLINK-2587

FlinkKafkaConsumer may fail with a NPE

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.10.0
    • 0.10.0
    • Connectors / Kafka
    • None

    Description

      This travis run (https://api.travis-ci.org/jobs/77533759/log.txt?deansi=true) failed with the following exception:

      org.apache.flink.client.program.ProgramInvocationException: The program execution failed: Job execution failed.
      	at org.apache.flink.client.program.Client.run(Client.java:438)
      	at org.apache.flink.streaming.api.environment.RemoteStreamEnvironment.executeRemotely(RemoteStreamEnvironment.java:122)
      	at org.apache.flink.streaming.api.environment.RemoteStreamEnvironment.execute(RemoteStreamEnvironment.java:96)
      	at org.apache.flink.streaming.connectors.kafka.KafkaTestBase.tryExecute(KafkaTestBase.java:267)
      	at org.apache.flink.streaming.connectors.kafka.KafkaConsumerTestBase.runBigRecordTestTopology(KafkaConsumerTestBase.java:821)
      	at org.apache.flink.streaming.connectors.kafka.KafkaITCase.testBigRecordJob(KafkaITCase.java:98)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:606)
      	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
      	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
      	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
      	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
      	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
      	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
      	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
      	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
      	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
      	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
      	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
      	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
      	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
      	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:264)
      	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
      	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:124)
      	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
      	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
      	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
      Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
      	at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1.applyOrElse(JobManager.scala:362)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
      	at org.apache.flink.runtime.testingUtils.TestingJobManager$$anonfun$handleTestingMessage$1.applyOrElse(TestingJobManager.scala:260)
      	at scala.PartialFunction$OrElse.apply(PartialFunction.scala:162)
      	at org.apache.flink.runtime.LeaderSessionMessages$$anonfun$receive$1.applyOrElse(LeaderSessionMessages.scala:40)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
      	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
      	at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
      	at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
      	at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
      	at org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
      	at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
      	at org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:99)
      	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
      	at akka.actor.ActorCell.invoke(ActorCell.scala:487)
      	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
      	at akka.dispatch.Mailbox.run(Mailbox.scala:221)
      	at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
      	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
      	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253)
      	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
      	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
      	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
      Caused by: java.lang.RuntimeException: Error while confirming checkpoint
      	at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:931)
      	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
      	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
      	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      	at java.lang.Thread.run(Thread.java:745)
      Caused by: java.lang.Exception: Error while confirming checkpoint 77 to the stream function
      	at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:146)
      	at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:338)
      	at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:927)
      	... 5 more
      Caused by: java.lang.NullPointerException
      	at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer.notifyCheckpointComplete(FlinkKafkaConsumer.java:541)
      	at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:144)
      	... 7 more
      

      It is caused by a rare race condition when one thread is in the close() method and another thread is notifying for a complete checkpoint.

      Attachments

        Activity

          People

            sewen Stephan Ewen
            rmetzger Robert Metzger
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: