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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4951) Container preemption interpreted as task failure
Date Wed, 23 Jan 2013 01:21:11 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13560281#comment-13560281
] 

Hadoop QA commented on MAPREDUCE-4951:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12566059/MAPREDUCE-4951-2.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3264//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3264//console

This message is automatically generated.
                
> Container preemption interpreted as task failure
> ------------------------------------------------
>
>                 Key: MAPREDUCE-4951
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4951
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster, mr-am, mrv2
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-4951-1.patch, MAPREDUCE-4951-2.patch, MAPREDUCE-4951.patch
>
>
> When YARN reports a completed container to the MR AM, it always interprets it as a failure.
 This can lead to a job failing because too many of its tasks failed, when in fact they only
failed because the scheduler preempted them.
> MR needs to recognize the special exit code value of -100 and interpret it as a container
being killed instead of a container failure.

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