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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5848) MapReduce counts forcibly preempted containers as FAILED
Date Mon, 21 Apr 2014 14:48:15 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13975600#comment-13975600
] 

Jason Lowe commented on MAPREDUCE-5848:
---------------------------------------

Yes, FileSystem is doing this.  See the ClientFinalizer in FileSystem.  One example where
we've seen this race occur is when tasks start running outside their memory boundaries and
the NM kills them.  Sometimes the task kills cleanly and the AM gets the useful container
status added by the NM explaining why the container was killed.  Other times the task ends
up failing first due to actions caused by the SIGTERM processing and the useful container
status arrives too late.

> MapReduce counts forcibly preempted containers as FAILED
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-5848
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5848
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.1.0-beta
>            Reporter: Carlo Curino
>            Assignee: Subramaniam Krishnan
>         Attachments: YARN-1958.patch
>
>
> The MapReduce AM is considering a forcibly preempted container as FAILED, while I think
it should be considered as KILLED (i.e., not count against the maximum number of failures).




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