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https://issues.apache.org/jira/browse/MAPREDUCE-1869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-1869.
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Resolution: Won't Fix
> TaskTracker hangs due to Java's usage of fork() being MT-unsafe
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-1869
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1869
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Affects Versions: 0.20.2
> Environment: Solaris 10 Update 7
> Java 1.6.0_14
> Reporter: Allen Wittenauer
> Priority: Critical
> Attachments: jstack.txt, pstack.txt
>
>
> A TaskTracker process on our grid appears to be locked up and not sending
> heartbeats to the namenode. Attaching jstack and pstack output. Even tho
> the hangs appear to be in LocalDirAllocator, the local file system seems to
> be a-ok.
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