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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2702) [MR-279] OutputCommitter changes for MR Application Master recovery
Date Mon, 10 Oct 2011 03:58:29 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13123877#comment-13123877
] 

Hudson commented on MAPREDUCE-2702:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #1068 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1068/])
    MAPREDUCE-3153. Fix TestFileOutputCommitter which was broken by MAPREDUCE-2702. Contributed
by Mahadev Konar.

acmurthy : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1180769
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/src/test/mapred/org/apache/hadoop/mapreduce/lib/output/TestFileOutputCommitter.java

                
> [MR-279] OutputCommitter changes for MR Application Master recovery
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2702
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2702
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: applicationmaster, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Sharad Agarwal
>            Assignee: Sharad Agarwal
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2702.patch, MAPREDUCE-2702.patch, MAPREDUCE-2702.patch,
mr2702_v1.patch, mr2702_v2.patch, mr2702_v3.patch, mr2702_v4.patch
>
>
> In MR AM recovers from a crash, it only reruns the non completed tasks. The completed
tasks (along with their output, if any) needs to be recovered from the previous life. This
would require some changes in OutputCommitter.

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