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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5652) ShuffleHandler should handle NM restarts
Date Fri, 10 Jan 2014 20:25:52 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13868254#comment-13868254
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-5652:
----------------------------------------------------

bq. I've largely implemented this as part of the prototype for YARN-1336.
Can this be closed as duplicate then? Or make it a sub-task if there isn't a corresponding
child under YARN-1336.

> 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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