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ASF GitHub Bot commented on FLINK-5407: --------------------------------------- Github user StefanRRichter commented on the issue: https://github.com/apache/flink/pull/3088 Thanks for reviewing and merging @aljoscha ! > Savepoint for iterative Task fails. > ----------------------------------- > > Key: FLINK-5407 > URL: https://issues.apache.org/jira/browse/FLINK-5407 > Project: Flink > Issue Type: Bug > Components: State Backends, Checkpointing > Affects Versions: 1.2.0 > Reporter: Stephan Ewen > Assignee: Stefan Richter > Fix For: 1.2.0, 1.3.0 > > Attachments: SavepointBug.java > > > Flink 1.2-SNAPSHOT (Commit: 5b54009) on Windows. > Triggering a savepoint for a streaming job, both the savepoint and the job > failed. > The job failed with the following exception: > {code} > java.lang.RuntimeException: Error while triggering checkpoint for > IterationSource-7 (1/1) > at org.apache.flink.runtime.taskmanager.Task$3.run(Task.java:1026) > at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) > at java.util.concurrent.FutureTask.run(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) > at java.lang.Thread.run(Unknown Source) > Caused by: java.lang.NullPointerException > at > org.apache.flink.streaming.runtime.tasks.StreamTask.createOperatorIdentifier(StreamTask.java:767) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.access$500(StreamTask.java:115) > at > org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.createStreamFactory(StreamTask.java:986) > at > org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:956) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:583) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:551) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:511) > at org.apache.flink.runtime.taskmanager.Task$3.run(Task.java:1019) > ... 5 more > And the savepoint failed with the following exception: > Using address /127.0.0.1:6123 to connect to JobManager. > Triggering savepoint for job 153310c4a836a92ce69151757c6b73f1. > Waiting for response... > ------------------------------------------------------------ > The program finished with the following exception: > java.lang.Exception: Failed to complete savepoint > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anon$7.apply(JobManager.scala:793) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anon$7.apply(JobManager.scala:782) > at > org.apache.flink.runtime.concurrent.impl.FlinkFuture$6.recover(FlinkFuture.java:263) > at akka.dispatch.Recover.internal(Future.scala:267) > at akka.dispatch.japi$RecoverBridge.apply(Future.scala:183) > at akka.dispatch.japi$RecoverBridge.apply(Future.scala:181) > at scala.util.Failure$$anonfun$recover$1.apply(Try.scala:185) > at scala.util.Try$.apply(Try.scala:161) > at scala.util.Failure.recover(Try.scala:185) > at scala.concurrent.Future$$anonfun$recover$1.apply(Future.scala:324) > at scala.concurrent.Future$$anonfun$recover$1.apply(Future.scala:324) > at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) > at > akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.processBatch$1(BatchingExecutor.scala:67) > at > akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:82) > at > akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59) > at > akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59) > at > scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72) > at akka.dispatch.BatchingExecutor$Batch.run(BatchingExecutor.scala:58) > at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41) > at > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401) > at > scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > at > scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) > Caused by: java.lang.Exception: Checkpoint failed: Checkpoint Coordinator is > shutting down > at > org.apache.flink.runtime.checkpoint.PendingCheckpoint.abortError(PendingCheckpoint.java:338) > at > org.apache.flink.runtime.checkpoint.CheckpointCoordinator.shutdown(CheckpointCoordinator.java:245) > at > org.apache.flink.runtime.executiongraph.ExecutionGraph.postRunCleanup(ExecutionGraph.java:1065) > at > org.apache.flink.runtime.executiongraph.ExecutionGraph.jobVertexInFinalState(ExecutionGraph.java:1034) > at > org.apache.flink.runtime.executiongraph.ExecutionJobVertex.subtaskInFinalState(ExecutionJobVertex.java:435) > at > org.apache.flink.runtime.executiongraph.ExecutionJobVertex.vertexCancelled(ExecutionJobVertex.java:407) > at > org.apache.flink.runtime.executiongraph.ExecutionVertex.executionCanceled(ExecutionVertex.java:593) > at > org.apache.flink.runtime.executiongraph.Execution.cancelingComplete(Execution.java:729) > at > org.apache.flink.runtime.executiongraph.ExecutionGraph.updateState(ExecutionGraph.java:1105) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$5.apply$mcV$sp(JobManager.scala:687) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$5.apply(JobManager.scala:686) > at > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$5.apply(JobManager.scala:686) > at > scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24) > at > scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24) > at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41) > at > akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401) > at > scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346) > ... 2 more > Caused by: java.lang.Exception: Checkpoint Coordinator is shutting down > ... 20 more > {code} > Maybe worth mentionning : the iteration body contains MapFunction and its > thread was in a sleep state (put manually) during the savepoint. -- This message was 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