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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6439) Shuffle deadlocks on wrong number of maps
Date Fri, 18 Dec 2009 07:07:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12792374#action_12792374
] 

Hadoop QA commented on HADOOP-6439:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12428406/HADOOP-6439-3.patch
  against trunk revision 892113.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/223/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/223/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/223/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/223/console

This message is automatically generated.

> Shuffle deadlocks on wrong number of maps
> -----------------------------------------
>
>                 Key: HADOOP-6439
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6439
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Owen O'Malley
>            Assignee: V.V.Chaitanya Krishna
>            Priority: Blocker
>             Fix For: 0.21.0, 0.22.0
>
>         Attachments: HADOOP-6439-1.patch, HADOOP-6439-2.patch, HADOOP-6439-3.patch, mr-1252.patch
>
>
> The new shuffle assumes that the number of maps is correct. The new JobSubmitter sets
the old value. Something misfires in the middle causing:
> 09/12/01 00:00:15 WARN conf.Configuration: mapred.job.split.file is deprecated. Instead,
use mapreduce.job.splitfile
> 09/12/01 00:00:15 WARN conf.Configuration: mapred.map.tasks is deprecated. Instead, use
mapreduce.job.maps
> But my reduces got stuck at 2 maps / 12 when there were only 2 maps in the job.

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