@Caizhi and @Becket - let me reach out to you to jointly debug this issue. I am wondering if there is some incorrect reporting of failed events?
On Wed, Apr 28, 2021 at 8:53 AM Caizhi Weng <tsreape...@gmail.com> wrote: > -1 > > We're testing this version on batch jobs with large (600~1000) parallelisms > and the following exception messages appear with high frequency: > > 2021-04-27 21:27:26 > org.apache.flink.util.FlinkException: An OperatorEvent from an > OperatorCoordinator to a task was lost. Triggering task failover to ensure > consistency. Event: '[NoMoreSplitEvent]', targetTask: <task name> - > execution #0 > at > > org.apache.flink.runtime.operators.coordination.SubtaskGatewayImpl.lambda$sendEvent$0(SubtaskGatewayImpl.java:81) > at > > java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:822) > at > > java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:797) > at > > java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) > at > > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:440) > at > > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:208) > at > > org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:77) > at > > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:158) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) > at scala.PartialFunction$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) > > Becket Qin is investigating this issue. >
