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https://issues.apache.org/jira/browse/FLINK-7524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16179194#comment-16179194
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ASF GitHub Bot commented on FLINK-7524:
---------------------------------------
Github user StefanRRichter closed the pull request at:
https://github.com/apache/flink/pull/4639
> Task "xxx" did not react to cancelling signal, but is stuck in method
> ---------------------------------------------------------------------
>
> Key: FLINK-7524
> URL: https://issues.apache.org/jira/browse/FLINK-7524
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.3.0
> Reporter: Bowen Li
> Priority: Blocker
> Fix For: 1.4.0
>
>
> Hi,
> I observed the following errors in taskmanager.log
> {code:java}
> 2017-08-25 17:03:40,141 WARN org.apache.flink.runtime.taskmanager.Task
> - Task 'TriggerWindow(SlidingEventTimeWindows(259200000,
> 3600000),
> AggregatingStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@f65b6aa2,
> aggFunction=com.streamingApp$MyAggregateFunction@1f193686},
> EventTimeTrigger(), WindowedStream.aggregate(WindowedStream.java:858)) ->
> Sink: prod_item (2/6)' did not react to cancelling signal, but is stuck in
> method:
>
> org.apache.flink.util.AbstractCloseableRegistry.unregisterClosable(AbstractCloseableRegistry.java:84)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.closeAndUnregisterStream(StateSnapshotContextSynchronousImpl.java:137)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.close(StateSnapshotContextSynchronousImpl.java:147)
> org.apache.flink.streaming.api.operators.AbstractStreamOperator.snapshotState(AbstractStreamOperator.java:399)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.checkpointStreamOperator(StreamTask.java:1157)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:1089)
> org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:653)
> org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:589)
> org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpointOnBarrier(StreamTask.java:542)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.notifyCheckpoint(BarrierBuffer.java:378)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.processBarrier(BarrierBuffer.java:281)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.getNextNonBlocked(BarrierBuffer.java:183)
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:213)
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:69)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:262)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
> java.lang.Thread.run(Thread.java:748)
> ...
> 2017-08-25 17:05:10,139 INFO org.apache.flink.runtime.taskmanager.Task
> - Notifying TaskManager about fatal error. Task
> 'TriggerWindow(SlidingEventTimeWindows(259200000, 3600000),
> AggregatingStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@f65b6aa2,
> aggFunction=com.streamingApp$MyAggregateFunction@1f193686},
> EventTimeTrigger(), WindowedStream.aggregate(WindowedStream.java:858)) ->
> Sink: prod_item (2/6)' did not react to cancelling signal in the last 30
> seconds, but is stuck in method:
>
> org.apache.flink.util.AbstractCloseableRegistry.unregisterClosable(AbstractCloseableRegistry.java:84)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.closeAndUnregisterStream(StateSnapshotContextSynchronousImpl.java:137)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.close(StateSnapshotContextSynchronousImpl.java:147)
> org.apache.flink.streaming.api.operators.AbstractStreamOperator.snapshotState(AbstractStreamOperator.java:399)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.checkpointStreamOperator(StreamTask.java:1157)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:1089)
> org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:653)
> org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:589)
> org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpointOnBarrier(StreamTask.java:542)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.notifyCheckpoint(BarrierBuffer.java:378)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.processBarrier(BarrierBuffer.java:281)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.getNextNonBlocked(BarrierBuffer.java:183)
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:213)
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:69)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:262)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
> java.lang.Thread.run(Thread.java:748)
> .
> 2017-08-25 17:05:10,140 ERROR org.apache.flink.yarn.YarnTaskManager
> -
> ==============================================================
> ====================== FATAL =======================
> ==============================================================
> A fatal error occurred, forcing the TaskManager to shut down: Task
> 'TriggerWindow(SlidingEventTimeWindows(259200000, 3600000),
> AggregatingStateDescriptor{serializer=org.apache.flink.api.java.typeutils.runtime.TupleSerializer@f65b6aa2,
> aggFunction=com.streamingApp$MyAggregateFunction@1f193686},
> EventTimeTrigger(), WindowedStream.aggregate(WindowedStream.java:858)) ->
> Sink: prod_item (2/6)' did not react to cancelling signal in the last 30
> seconds, but is stuck in method:
>
> org.apache.flink.util.AbstractCloseableRegistry.unregisterClosable(AbstractCloseableRegistry.java:84)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.closeAndUnregisterStream(StateSnapshotContextSynchronousImpl.java:137)
> org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl.close(StateSnapshotContextSynchronousImpl.java:147)
> org.apache.flink.streaming.api.operators.AbstractStreamOperator.snapshotState(AbstractStreamOperator.java:399)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.checkpointStreamOperator(StreamTask.java:1157)
> org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:1089)
> org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:653)
> org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:589)
> org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpointOnBarrier(StreamTask.java:542)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.notifyCheckpoint(BarrierBuffer.java:378)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.processBarrier(BarrierBuffer.java:281)
> org.apache.flink.streaming.runtime.io.BarrierBuffer.getNextNonBlocked(BarrierBuffer.java:183)
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:213)
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:69)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:262)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)
> java.lang.Thread.run(Thread.java:748)
> {code}
> Why is the task stucked?
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