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https://issues.apache.org/jira/browse/MAPREDUCE-1316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hemanth Yamijala updated MAPREDUCE-1316:
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Resolution: Fixed
Fix Version/s: 0.21.0
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
I committed this to trunk and branch 0.21. Thanks, Amar !
> JobTracker holds stale references to retired jobs via unreported tasks
> -----------------------------------------------------------------------
>
> Key: MAPREDUCE-1316
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1316
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Priority: Blocker
> Fix For: 0.21.0
>
> Attachments: mapreduce-1316-v1.11.patch,
> mapreduce-1316-v1.13-branch20-yahoo.patch,
> mapreduce-1316-v1.14-branch20-yahoo.patch,
> mapreduce-1316-v1.14.1-branch20-yahoo.patch,
> mapreduce-1316-v1.15-branch-0.21.patch,
> mapreduce-1316-v1.15-branch20-yahoo.patch, mapreduce-1316-v1.15.patch,
> mapreduce-1316-v1.7.patch
>
>
> JobTracker fails to remove _unreported_ tasks' mapping from _taskToTIPMap_ if
> the job finishes and retires. _Unreported tasks_ refers to tasks that were
> scheduled but the tasktracker did not report back with the task status. In
> such cases a stale reference is held to TaskInProgress (and thus
> JobInProgress) long after the job is gone leading to memory leak.
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