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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5652) ShuffleHandler should handle NM restarts
Date Fri, 10 Jan 2014 14:29:54 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867835#comment-13867835
] 

Jason Lowe commented on MAPREDUCE-5652:
---------------------------------------

No branch yet, just an ugly internal prototype that needs a bit of cleanup before publishing.
 I meant to post either a branch or sets of draft patches to the JIRAs last month but got
swamped with other stuff.  I'll try to get some things posted i the next week or so.

> ShuffleHandler should handle NM restarts
> ----------------------------------------
>
>                 Key: MAPREDUCE-5652
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5652
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>              Labels: shuffle
>
> ShuffleHandler should work across NM restarts and not require re-running map-tasks. On
NM restart, the map outputs are cleaned up requiring re-execution of map tasks and should
be avoided.



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