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Posted to issues@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2016/07/15 15:25:20 UTC
[jira] [Resolved] (FLINK-3466) Job might get stuck in
restoreState() from HDFS due to interrupt
[ https://issues.apache.org/jira/browse/FLINK-3466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephan Ewen resolved FLINK-3466.
---------------------------------
Resolution: Fixed
Fix Version/s: 1.1.0
Fixed in e9f660d1ff5540c7ef829f2de5bb870b787c18b7
> Job might get stuck in restoreState() from HDFS due to interrupt
> ----------------------------------------------------------------
>
> Key: FLINK-3466
> URL: https://issues.apache.org/jira/browse/FLINK-3466
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.1.0
> Reporter: Robert Metzger
> Assignee: Stephan Ewen
> Priority: Blocker
> Fix For: 1.1.0
>
>
> A user reported the following issue with a failing job:
> {code}
> 10:46:09,223 WARN org.apache.flink.runtime.taskmanager.Task - Task 'XXX -> YYY (3/5)' did not react to cancelling signal, but is stuck in method:
> sun.misc.Unsafe.park(Native Method)
> java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitUninterruptibly(AbstractQueuedSynchronizer.java:1979)
> org.apache.hadoop.hdfs.shortcircuit.DfsClientShmManager$EndpointShmManager.allocSlot(DfsClientShmManager.java:255)
> org.apache.hadoop.hdfs.shortcircuit.DfsClientShmManager.allocSlot(DfsClientShmManager.java:434)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.allocShmSlot(ShortCircuitCache.java:1016)
> org.apache.hadoop.hdfs.BlockReaderFactory.createShortCircuitReplicaInfo(BlockReaderFactory.java:477)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.create(ShortCircuitCache.java:783)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.fetchOrCreate(ShortCircuitCache.java:717)
> org.apache.hadoop.hdfs.BlockReaderFactory.getBlockReaderLocal(BlockReaderFactory.java:421)
> org.apache.hadoop.hdfs.BlockReaderFactory.build(BlockReaderFactory.java:332)
> org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:576)
> org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:800)
> org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:848)
> java.io.DataInputStream.read(DataInputStream.java:149)
> org.apache.flink.runtime.fs.hdfs.HadoopDataInputStream.read(HadoopDataInputStream.java:69)
> java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2310)
> java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2323)
> java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
> java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
> java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
> org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.<init>(InstantiationUtil.java:55)
> org.apache.flink.runtime.state.filesystem.FileSerializableStateHandle.getState(FileSerializableStateHandle.java:52)
> org.apache.flink.runtime.state.filesystem.FileSerializableStateHandle.getState(FileSerializableStateHandle.java:35)
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.restoreState(AbstractUdfStreamOperator.java:162)
> org.apache.flink.streaming.runtime.tasks.StreamTask.restoreState(StreamTask.java:440)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:208)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
> java.lang.Thread.run(Thread.java:745)
> {code}
> and
> {code}
> 10:46:09,223 WARN org.apache.flink.runtime.taskmanager.Task - Task 'XXX -> YYY (3/5)' did not react to cancelling signal, but is stuck in method:
> java.lang.Throwable.fillInStackTrace(Native Method)
> java.lang.Throwable.fillInStackTrace(Throwable.java:783)
> java.lang.Throwable.<init>(Throwable.java:250)
> java.lang.Exception.<init>(Exception.java:54)
> java.lang.InterruptedException.<init>(InterruptedException.java:57)
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2038)
> org.apache.hadoop.net.unix.DomainSocketWatcher.add(DomainSocketWatcher.java:325)
> org.apache.hadoop.hdfs.shortcircuit.DfsClientShmManager$EndpointShmManager.allocSlot(DfsClientShmManager.java:266)
> org.apache.hadoop.hdfs.shortcircuit.DfsClientShmManager.allocSlot(DfsClientShmManager.java:434)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.allocShmSlot(ShortCircuitCache.java:1016)
> org.apache.hadoop.hdfs.BlockReaderFactory.createShortCircuitReplicaInfo(BlockReaderFactory.java:477)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.create(ShortCircuitCache.java:783)
> org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache.fetchOrCreate(ShortCircuitCache.java:717)
> org.apache.hadoop.hdfs.BlockReaderFactory.getBlockReaderLocal(BlockReaderFactory.java:421)
> org.apache.hadoop.hdfs.BlockReaderFactory.build(BlockReaderFactory.java:332)
> org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:576)
> org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:800)
> org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:848)
> java.io.DataInputStream.read(DataInputStream.java:149)
> org.apache.flink.runtime.fs.hdfs.HadoopDataInputStream.read(HadoopDataInputStream.java:69)
> java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2310)
> java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2323)
> java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2794)
> java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:801)
> java.io.ObjectInputStream.<init>(ObjectInputStream.java:299)
> org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.<init>(InstantiationUtil.java:55)
> org.apache.flink.runtime.state.filesystem.FileSerializableStateHandle.getState(FileSerializableStateHandle.java:52)
> org.apache.flink.runtime.state.filesystem.FileSerializableStateHandle.getState(FileSerializableStateHandle.java:35)
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.restoreState(AbstractUdfStreamOperator.java:162)
> org.apache.flink.streaming.runtime.tasks.StreamTask.restoreState(StreamTask.java:440)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:208)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
> java.lang.Thread.run(Thread.java:745)
> {code}
> The issue is most likely that the HDFS client gets stuck in the "org.apache.flink.runtime.fs.hdfs.HadoopDataInputStream.read()" call when it receives an interrupt.
> By putting the call into a separate thread, the TaskInterrupt would not break the HadoopReadThread.
> The HadoopReadThread would stop eventually with an error or after the read operation has finished.
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