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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-399) Duplicate destroy of process trees in TaskMemoryManager.
Date Mon, 21 Jul 2014 21:34:38 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated MAPREDUCE-399:
---------------------------------------

    Labels: newbie  (was: )

> Duplicate destroy of process trees in TaskMemoryManager.
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-399
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-399
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Minor
>              Labels: newbie
>
> TaskMemoryManager currently works only on Linux and terminates tasks that transgress
memory-limits by first calling TaskTracker.purgeTask() and then explicitly destroying the
process tree to be sure that the whole process tree is cleaned up. After HADOOP-2721, we don't
need this explicit process-tree destroying as the usual code-path of killing tasks itself
takes care of cleaning up the whole process-trees.



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