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https://issues.apache.org/jira/browse/MAPREDUCE-3519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-3519:
-----------------------------------------------
Resolution: Fixed
Target Version/s: 0.23.1, 0.24.0 (was: 0.24.0, 0.23.1)
Release Note: Fixed a deadlock in NodeManager LocalDirectories's
handling service.
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
I just committed this to trunk and branch-0.23. Thanks Ravi!
> Deadlock in LocalDirsHandlerService and ShuffleHandler
> ------------------------------------------------------
>
> Key: MAPREDUCE-3519
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3519
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2, nodemanager
> Affects Versions: 0.23.1, 0.24.0
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Priority: Blocker
> Fix For: 0.23.1
>
> Attachments: 3519.patch, 3519.v1.patch, deadlock.txt
>
>
> MAPREDUCE-3121 cloned Configuration object in LocalDirsHandlerService.init()
> to avoid others to access that configuration object. But since it is used in
> local FileSystem object creation in LocalDirAllocator.AllocatorPerContext and
> the same FileSystem object is used in
> ShuffleHandler.Shuffle.localDirAllocator, this is causing a deadlock when
> accessing this configuration object from LocalDirsHandlerService and
> ShuffleHandler along with AllocatorPerContext object.
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