[jira] [Created] (FLINK-18832) BoundedBlockingSubpartition does not work with StreamTask

["Till Rohrmann (Jira)" <ji...@apache.org>]

Till Rohrmann created FLINK-18832:
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             Summary: BoundedBlockingSubpartition does not work with StreamTask
                 Key: FLINK-18832
                 URL: https://issues.apache.org/jira/browse/FLINK-18832
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network, Runtime / Task
    Affects Versions: 1.11.1, 1.10.1, 1.12.0
            Reporter: Till Rohrmann


The {{BoundedBlockingSubpartition}} does not work with a {{StreamTask}} because the {{StreamTask}} instantiates an {{OutputFlusher}} which concurrently accesses the {{BoundedBlockingSubpartition}}. This concurrency can lead to a double closing of the underlying {{BufferConsumer}} which manifests in this stack trace:

{code}
[9:15 PM] Caused by: org.apache.flink.shaded.netty4.io.netty.util.IllegalReferenceCountException: refCnt: 0, increment: 1
	at org.apache.flink.shaded.netty4.io.netty.util.internal.ReferenceCountUpdater.retain0(ReferenceCountUpdater.java:123)
	at org.apache.flink.shaded.netty4.io.netty.util.internal.ReferenceCountUpdater.retain(ReferenceCountUpdater.java:110)
	at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractReferenceCountedByteBuf.retain(AbstractReferenceCountedByteBuf.java:80)
	at org.apache.flink.runtime.io.network.buffer.NetworkBuffer.retainBuffer(NetworkBuffer.java:174)
	at org.apache.flink.runtime.io.network.buffer.NetworkBuffer.retainBuffer(NetworkBuffer.java:47)
	at org.apache.flink.runtime.io.network.buffer.ReadOnlySlicedNetworkBuffer.retainBuffer(ReadOnlySlicedNetworkBuffer.java:127)
	at org.apache.flink.runtime.io.network.buffer.ReadOnlySlicedNetworkBuffer.retainBuffer(ReadOnlySlicedNetworkBuffer.java:41)
	at org.apache.flink.runtime.io.network.buffer.BufferConsumer.build(BufferConsumer.java:108)
	at org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition.writeAndCloseBufferConsumer(BoundedBlockingSubpartition.java:156)
	at org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition.flushCurrentBuffer(BoundedBlockingSubpartition.java:144)
	at org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition.flush(BoundedBlockingSubpartition.java:135)
	at org.apache.flink.runtime.io.network.partition.ResultPartition.flushAll(ResultPartition.java:245)
	at org.apache.flink.runtime.io.network.api.writer.RecordWriter.flushAll(RecordWriter.java:183)
	at org.apache.flink.streaming.runtime.io.RecordWriterOutput.flush(RecordWriterOutput.java:156)
	at org.apache.flink.streaming.runtime.tasks.OperatorChain.flushOutputs(OperatorChain.java:344)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.afterInvoke(StreamTask.java:602)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:544)
	at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
	at java.lang.Thread.run(Thread.java:748)
{code}



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