Hi, igyu, It seems like the state in the join sql can not be recovered rightly. Do you change the columns in the join sql? If so, I think this may cause failing to recover from the checkpoint.
Best, Hang igyu <i...@21cn.com> 于2023年4月14日周五 16:13写道： > I have a flink-SQL task. (enable savepoint) > I want change it , so I stop it > > sink and source add a cloumn in oracle table > and modify SQL in flink > > when I commit it I get a error > > org.apache.flink.runtime.JobException: Recovery is suppressed by > NoRestartBackoffTimeStrategy > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:139) > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:83) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.recordTaskFailure(DefaultScheduler.java:256) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:247) > at > org.apache.flink.runtime.scheduler.DefaultScheduler.onTaskFailed(DefaultScheduler.java:240) > at > org.apache.flink.runtime.scheduler.SchedulerBase.onTaskExecutionStateUpdate(SchedulerBase.java:738) > at > org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:715) > at > org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:78) > at > org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:477) > 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) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$handleRpcInvocation$1(AkkaRpcActor.java:309) > at > org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:83) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:307) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:222) > at > org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:84) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:168) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:24) > at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:20) > at scala.PartialFunction.applyOrElse(PartialFunction.scala:123) > at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122) > at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:20) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) > at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172) > at akka.actor.Actor.aroundReceive(Actor.scala:537) > at akka.actor.Actor.aroundReceive$(Actor.scala:535) > at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:220) > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:580) > at akka.actor.ActorCell.invoke(ActorCell.scala:548) > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:270) > at akka.dispatch.Mailbox.run(Mailbox.scala:231) > at akka.dispatch.Mailbox.exec(Mailbox.scala:243) > at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) > at > java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1067) > at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1703) > at > java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:172) > Caused by: java.lang.RuntimeException: Error while getting state > at > org.apache.flink.runtime.state.DefaultKeyedStateStore.getMapState(DefaultKeyedStateStore.java:109) > at > org.apache.flink.streaming.api.operators.StreamingRuntimeContext.getMapState(StreamingRuntimeContext.java:232) > at > org.apache.flink.table.runtime.operators.join.stream.state.JoinRecordStateViews$InputSideHasNoUniqueKey.<init>(JoinRecordStateViews.java:168) > at > org.apache.flink.table.runtime.operators.join.stream.state.JoinRecordStateViews$InputSideHasNoUniqueKey.<init>(JoinRecordStateViews.java:154) > at > org.apache.flink.table.runtime.operators.join.stream.state.JoinRecordStateViews.create(JoinRecordStateViews.java:65) > at > org.apache.flink.table.runtime.operators.join.stream.StreamingJoinOperator.open(StreamingJoinOperator.java:95) > at > org.apache.flink.streaming.runtime.tasks.RegularOperatorChain.initializeStateAndOpenOperators(RegularOperatorChain.java:107) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.restoreGates(StreamTask.java:726) > at > org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.call(StreamTaskActionExecutor.java:55) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.restoreInternal(StreamTask.java:702) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:669) > at > org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:935) > at > org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:904) > at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:728) > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:550) > at java.lang.Thread.run(Thread.java:748) > Caused by: org.apache.flink.util.StateMigrationException: For heap backends, > the new state serializer > (org.apache.flink.api.common.typeutils.base.MapSerializer@11386c66) must not > be incompatible with the old state serializer > (org.apache.flink.api.common.typeutils.base.MapSerializer@d5cefd5c). > at > org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.tryRegisterStateTable(HeapKeyedStateBackend.java:247) > at > org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.createOrUpdateInternalState(HeapKeyedStateBackend.java:326) > at > org.apache.flink.runtime.state.heap.HeapKeyedStateBackend.createOrUpdateInternalState(HeapKeyedStateBackend.java:313) > at > org.apache.flink.runtime.state.KeyedStateFactory.createOrUpdateInternalState(KeyedStateFactory.java:47) > at > org.apache.flink.runtime.state.ttl.TtlStateFactory.createStateAndWrapWithTtlIfEnabled(TtlStateFactory.java:73) > at > org.apache.flink.runtime.state.AbstractKeyedStateBackend.getOrCreateKeyedState(AbstractKeyedStateBackend.java:362) > at > org.apache.flink.runtime.state.AbstractKeyedStateBackend.getPartitionedState(AbstractKeyedStateBackend.java:413) > at > org.apache.flink.runtime.state.DefaultKeyedStateStore.getPartitionedState(DefaultKeyedStateStore.java:115) > at > org.apache.flink.runtime.state.DefaultKeyedStateStore.getMapState(DefaultKeyedStateStore.java:106) > ... 15 more > 2023-04-14 15:59:04,846 INFO org.apache.flink.runtime.history.FsJobArchivist > [] - Job a0aea91ccd8f781177fa957a9b96b751 has been archived at > hdfs:/flink/completed-jobs/a0aea91ccd8f781177fa957a9b96b751. > 2023-04-14 15:59:04,850 INFO > org.apache.flink.runtime.dispatcher.StandaloneDispatcher [] - Job > a0aea91ccd8f781177fa957a9b96b751 has been registered for cleanup in the > JobResultStore after reaching a terminal state. > 2023-04-14 15:59:04,856 INFO org.apache.flink.runtime.jobmaster.JobMaster > [] - Stopping the JobMaster for job 'oracle-cdc-orders' > (a0aea91ccd8f781177fa957a9b96b751). > 2023-04-14 15:59:04,862 INFO > org.apache.flink.runtime.checkpoint.StandaloneCompletedCheckpointStore [] - > Shutting down > 2023-04-14 15:59:04,862 INFO > org.apache.flink.runtime.checkpoint.StandaloneCompletedCheckpointStore [] - > Checkpoint with ID 1 at > 'hdfs://nameservice1/flink/savepoints/savepoint-fac1a4-ac9e0b21815d' not > discarded. > 2023-04-14 15:59:04,863 INFO org.apache.flink.runtime.jobmaster.JobMaster > [] - Disconnect TaskExecutor > container_e90_1680504434553_0054_01_000002(bigdser1:8041) because: Stopping > JobMaster for job 'oracle-cdc-orders' (a0aea91ccd8f781177fa957a9b96b751). > 2023-04-14 15:59:04,865 INFO > org.apache.flink.runtime.jobmaster.slotpool.DefaultDeclarativeSlotPool [] - > Releasing slot [3784358da647415e10f258a37c9486d2]. > 2023-04-14 15:59:04,866 INFO org.apache.flink.runtime.jobmaster.JobMaster > [] - Close ResourceManager connection > 8b5d51c94baf858f90e3424bc037d9db: Stopping JobMaster for job > 'oracle-cdc-orders' (a0aea91ccd8f781177fa957a9b96b751). > 2023-04-14 15:59:04,868 INFO > org.apache.flink.runtime.resourcemanager.active.ActiveResourceManager [] - > Disconnect job manager > 00000000000000000000000000000...@akka.tcp://flink@bigdser1:16376/user/rpc/jobmanager_2 > for job a0aea91ccd8f781177fa957a9b96b751 from the resource manager. > 2023-04-14 15:59:04,990 INFO > org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap > [] - Application FAILED: > java.util.concurrent.CompletionException: > org.apache.flink.client.deployment.application.UnsuccessfulExecutionException: > Application Status: FAILED > at > org.apache.flink.client.deployment.application.ApplicationDispatcherBootstrap.lambda$unwrapJobResultException$7(ApplicationDispatcherBootstrap.java:403) > ~[flink-dist-1.16.1.jar:1.16.1] > at > java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:616) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:591) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) > ~[?:1.8.0_271] > at > org.apache.flink.client.deployment.application.JobStatusPollingUtils.lambda$null$2(JobStatusPollingUtils.java:101) > ~[flink-dist-1.16.1.jar:1.16.1] > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.uniWhenCompleteStage(CompletableFuture.java:792) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.whenComplete(CompletableFuture.java:2153) > ~[?:1.8.0_271] > at > org.apache.flink.client.deployment.application.JobStatusPollingUtils.lambda$pollJobResultAsync$4(JobStatusPollingUtils.java:96) > ~[flink-dist-1.16.1.jar:1.16.1] > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) > ~[?:1.8.0_271] > at > org.apache.flink.runtime.rpc.akka.AkkaInvocationHandler.lambda$invokeRpc$1(AkkaInvocationHandler.java:268) > ~[?:?] > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) > ~[?:1.8.0_271] > at > org.apache.flink.util.concurrent.FutureUtils.doForward(FutureUtils.java:1277) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.lambda$null$1(ClassLoadingUtils.java:93) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:68) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.lambda$guardCompletionWithContextClassLoader$2(ClassLoadingUtils.java:92) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) > ~[?:1.8.0_271] > at > java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) > ~[?:1.8.0_271] > at > org.apache.flink.runtime.concurrent.akka.AkkaFutureUtils$1.onComplete(AkkaFutureUtils.java:47) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.dispatch.OnComplete.internal(Future.scala:300) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.dispatch.OnComplete.internal(Future.scala:297) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.dispatch.japi$CallbackBridge.apply(Future.scala:224) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.dispatch.japi$CallbackBridge.apply(Future.scala:221) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > org.apache.flink.runtime.concurrent.akka.AkkaFutureUtils$DirectExecutionContext.execute(AkkaFutureUtils.java:65) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:68) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.concurrent.impl.Promise$DefaultPromise.$anonfun$tryComplete$1(Promise.scala:284) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.concurrent.impl.Promise$DefaultPromise.$anonfun$tryComplete$1$adapted(Promise.scala:284) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:284) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.pattern.PromiseActorRef.$bang(AskSupport.scala:621) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.pattern.PipeToSupport$PipeableFuture$$anonfun$pipeTo$1.applyOrElse(PipeToSupport.scala:24) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.pattern.PipeToSupport$PipeableFuture$$anonfun$pipeTo$1.applyOrElse(PipeToSupport.scala:23) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at scala.concurrent.Future.$anonfun$andThen$1(Future.scala:532) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:29) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:29) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:60) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:63) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.dispatch.BatchingExecutor$BlockableBatch.$anonfun$run$1(BatchingExecutor.scala:100) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12) > [flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:81) > [flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:100) > [flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:49) > [flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:48) > [flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) > [?:1.8.0_271] > at > java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1067) > [?:1.8.0_271] > at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1703) > [?:1.8.0_271] > at > java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:172) > [?:1.8.0_271] > Caused by: > org.apache.flink.client.deployment.application.UnsuccessfulExecutionException: > Application Status: FAILED > at > org.apache.flink.client.deployment.application.UnsuccessfulExecutionException.fromJobResult(UnsuccessfulExecutionException.java:71) > ~[flink-dist-1.16.1.jar:1.16.1] > ... 56 more > Caused by: org.apache.flink.runtime.client.JobExecutionException: Job > execution failed. > at > org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:144) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.client.deployment.application.UnsuccessfulExecutionException.fromJobResult(UnsuccessfulExecutionException.java:60) > ~[flink-dist-1.16.1.jar:1.16.1] > ... 56 more > Caused by: org.apache.flink.runtime.JobException: Recovery is suppressed by > NoRestartBackoffTimeStrategy > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:139) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:83) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.DefaultScheduler.recordTaskFailure(DefaultScheduler.java:256) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:247) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.DefaultScheduler.onTaskFailed(DefaultScheduler.java:240) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.SchedulerBase.onTaskExecutionStateUpdate(SchedulerBase.java:738) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:715) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:78) > ~[flink-dist-1.16.1.jar:1.16.1] > at > org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:477) > ~[flink-dist-1.16.1.jar:1.16.1] > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > ~[?:1.8.0_271] > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > ~[?:1.8.0_271] > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > ~[?:1.8.0_271] > at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_271] > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$handleRpcInvocation$1(AkkaRpcActor.java:309) > ~[?:?] > at > org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:83) > ~[flink-rpc-akka_5a895174-f5b0-4806-b9db-b8e64f137c95.jar:1.16.1] > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:307) > ~[?:?] > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:222) > ~[?:?] > 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