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https://issues.apache.org/jira/browse/MAPREDUCE-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994444#comment-13994444
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Karthik Kambatla commented on MAPREDUCE-5652:
---------------------------------------------

[~jlowe] - now that YARN-1987 is committed, mind updating the patch against the 
latest trunk. We should be able to get this in soon. 

> NM Recovery. 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: Jason Lowe
>              Labels: shuffle
>         Attachments: MAPREDUCE-5652-v2.patch, MAPREDUCE-5652-v3.patch, 
> MAPREDUCE-5652-v4.patch, MAPREDUCE-5652-v5.patch, MAPREDUCE-5652-v6.patch, 
> MAPREDUCE-5652-v7.patch, MAPREDUCE-5652-v8.patch, 
> MAPREDUCE-5652-v9-and-YARN-1987.patch, MAPREDUCE-5652.patch
>
>
> 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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