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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-2455) Misleading I/O manager error log messages
Date Fri, 31 Jul 2015 17:25:04 GMT
Ufuk Celebi created FLINK-2455:
----------------------------------

             Summary: Misleading I/O manager error log messages
                 Key: FLINK-2455
                 URL: https://issues.apache.org/jira/browse/FLINK-2455
             Project: Flink
          Issue Type: Improvement
          Components: Distributed Runtime
    Affects Versions: 0.9, master
            Reporter: Ufuk Celebi
             Fix For: 0.10, 0.9.1


The logs reported by [~andralungu] in FLINK-2412 show a lot of the following messages:

{code}
20:13:27,504 WARN  org.apache.flink.runtime.taskmanager.Task                     - Task 'CHAIN
DataSource (at getEdgesDataSet(Degrees.java:64) (org.apache.flink.api.java.io.CsvInputFormat))
-> Map (Map at getEdgesDataSet(Degrees.java:64)) (50/60)' did not react to cancelling signal,
but is stuck in method:
 java.lang.Object.wait(Native Method)
org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel.close(AsynchronousFileIOChannel.java:126)
org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel.closeAndDelete(AsynchronousFileIOChannel.java:158)
org.apache.flink.runtime.io.network.partition.SpillableSubpartition.release(SpillableSubpartition.java:130)
org.apache.flink.runtime.io.network.partition.ResultPartition.release(ResultPartition.java:300)
org.apache.flink.runtime.io.network.partition.ResultPartitionManager.releasePartitionsProducedBy(ResultPartitionManager.java:95)
org.apache.flink.runtime.io.network.NetworkEnvironment.unregisterTask(NetworkEnvironment.java:356)
org.apache.flink.runtime.taskmanager.Task.run(Task.java:674)
java.lang.Thread.run(Thread.java:722)

20:13:27,583 ERROR org.apache.flink.runtime.io.network.partition.ResultPartition  - Error
during release of result subpartition: Closing of asynchronous file channel was interrupted.
java.io.IOException: Closing of asynchronous file channel was interrupted.
	at org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel.close(AsynchronousFileIOChannel.java:130)
	at org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel.closeAndDelete(AsynchronousFileIOChannel.java:158)
	at org.apache.flink.runtime.io.network.partition.SpillableSubpartition.release(SpillableSubpartition.java:130)
	at org.apache.flink.runtime.io.network.partition.ResultPartition.release(ResultPartition.java:300)
	at org.apache.flink.runtime.io.network.partition.ResultPartitionManager.releasePartitionsProducedBy(ResultPartitionManager.java:95)
	at org.apache.flink.runtime.io.network.NetworkEnvironment.unregisterTask(NetworkEnvironment.java:356)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:674)
	at java.lang.Thread.run(Thread.java:722)
{code}

This is repeated for each subpartition during the release of a spillable partition (each subpartition
is closed idp). The task is interrupted while waiting for the file channel to be closed.

{code}
20:15:50,329 ERROR org.apache.flink.runtime.io.network.partition.ResultPartition  - Error
during release of result subpartition: IO-Manager has been closed.
java.io.IOException: IO-Manager has been closed.
	at org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync$WriterThread.shutdown(IOManagerAsync.java:424)
	at org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync.shutdown(IOManagerAsync.java:125)
	at org.apache.flink.runtime.io.disk.iomanager.IOManager$1.run(IOManager.java:103)
{code}



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