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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5652) ShuffleHandler should handle NM restarts
Date Thu, 09 Jan 2014 23:51:50 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867302#comment-13867302

Karthik Kambatla commented on MAPREDUCE-5652:

Thanks for the update, [~jlowe]. Glad to know this is being handled as part of YARN-1336.
Looks like it is better to just wait for YARN-1336 to be done, and address any remaining items
here. Please feel free to take this over too. 

Curious - is there a branch for the YARN-1336 changes I can take an early peek at? 

> 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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