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https://issues.apache.org/jira/browse/MAPREDUCE-7307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran resolved MAPREDUCE-7307.
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Fix Version/s: 3.3.1
Resolution: Fixed
> Potential thread leak in LocatedFileStatusFetcher
> -------------------------------------------------
>
> Key: MAPREDUCE-7307
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7307
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: job submission
> Reporter: Zhihua Deng
> Assignee: Zhihua Deng
> Priority: Major
> Fix For: 3.3.1
>
>
> We see that when using LocatedFileStatusFetcher to get file infos In
> parallel, if the listStatus thread is interrupted, the executor service in
> LocatedFileStatusFetcher is left unclosed, the thread stack will like this:
> {noformat}
> "GetFileInfo #63" #125 daemon prio=5 os_prio=0 tid=0x00007f6198106800
> nid=0x881 waiting on condition [0x00007f60d9fde000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x0000000082e810a8> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
> at
> java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748){noformat}
> This caused by if condition.await() throws InterruptedException, the method
> `shutDownNow` for the executor service would not be called as a result,
> should move such resource releasing call into the finally block.
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