[jira] [Created] (FLINK-21181) Buffer pool is destroyed error when outputting data over a timer after cancellation.

[Shang Yuanchun (Jira)]

Arvid Heise created FLINK-21181:
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             Summary: Buffer pool is destroyed error when outputting data over a timer after cancellation.
                 Key: FLINK-21181
                 URL: https://issues.apache.org/jira/browse/FLINK-21181
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Task
    Affects Versions: 1.11.0
            Reporter: Arvid Heise


A user reported the issue and provided some taskmanager log with the following relevant lines:
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2021-01-26 04:37:43,280 INFO  org.apache.flink.runtime.taskmanager.Task                    [] - Attempting to cancel task forward fill -> (Sink: tag db sink, Sink: back fill db sink, Sink: min max step db sink) (2/2) (8c1f256176fb89f112c27883350a02bc).
2021-01-26 04:37:43,280 INFO  org.apache.flink.runtime.taskmanager.Task                    [] - forward fill -> (Sink: tag db sink, Sink: back fill db sink, Sink: min max step db sink) (2/2) (8c1f256176fb89f112c27883350a02bc) switched from RUNNING to CANCELING.
2021-01-26 04:37:43,280 INFO  org.apache.flink.runtime.taskmanager.Task                    [] - Triggering cancellation of task code forward fill -> (Sink: tag db sink, Sink: back fill db sink, Sink: min max step db sink) (2/2) (8c1f256176fb89f112c27883350a02bc).
2021-01-26 04:37:43,282 ERROR xxxxxx.pipeline.stream.functions.process.ForwardFillKeyedProcessFunction [] - Error in timer.
java.lang.RuntimeException: Buffer pool is destroyed.
        at org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:110) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.OperatorChain$BroadcastingOutputCollector.collect(OperatorChain.java:787) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.OperatorChain$BroadcastingOutputCollector.collect(OperatorChain.java:740) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:53) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at xxxxxx.pipeline.stream.functions.process.ForwardFillKeyedProcessFunction.collect(ForwardFillKeyedProcessFunction.java:452) ~[develop-17e9fd0e.jar:?]
        at xxxxxx.pipeline.stream.functions.process.ForwardFillKeyedProcessFunction.onTimer(ForwardFillKeyedProcessFunction.java:277) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.streaming.api.operators.KeyedProcessOperator.invokeUserFunction(KeyedProcessOperator.java:94) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.api.operators.KeyedProcessOperator.onProcessingTime(KeyedProcessOperator.java:78) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.api.operators.InternalTimerServiceImpl.onProcessingTime(InternalTimerServiceImpl.java:260) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.invokeProcessingTimeCallback(StreamTask.java:1181) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$null$13(StreamTask.java:1172) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:47) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:78) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:270) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:190) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:558) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:530) [flink-dist_2.12-1.11.0.jar:1.11.0]
        at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721) [develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546) [develop-17e9fd0e.jar:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_252]
Caused by: java.lang.IllegalStateException: Buffer pool is destroyed.
        at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegmentFromGlobal(LocalBufferPool.java:339) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegment(LocalBufferPool.java:309) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegmentBlocking(LocalBufferPool.java:290) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBuilderBlocking(LocalBufferPool.java:266) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.partition.ResultPartition.getBufferBuilder(ResultPartition.java:213) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.api.writer.RecordWriter.requestNewBufferBuilder(RecordWriter.java:294) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.requestNewBufferBuilder(ChannelSelectorRecordWriter.java:103) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.api.writer.RecordWriter.copyFromSerializerToTargetChannel(RecordWriter.java:149) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:120) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.emit(ChannelSelectorRecordWriter.java:60) ~[develop-17e9fd0e.jar:?]
        at org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:107) ~[flink-dist_2.12-1.11.0.jar:1.11.0]
        ... 24 more
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