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From "V.V.Chaitanya Krishna (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6439) Shuffle deadlocks on wrong number of maps
Date Wed, 14 Apr 2010 08:26:51 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12856796#action_12856796
] 

V.V.Chaitanya Krishna commented on HADOOP-6439:
-----------------------------------------------

The Hudson result doesn't seem to be posting here. The result is as below:
{noformat}
  [exec] BUILD SUCCESSFUL
     [exec] Total time: 7 seconds
     [exec] 
     [exec] 
     [exec] 
     [exec] 
     [exec] +1 overall.  Here are the results of testing the latest attachment 
     [exec]   http://issues.apache.org/jira/secure/attachment/12441685/HADOOP-6439-6.patch
     [exec]   against trunk revision 933810.
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
     [exec] 
     [exec]     +1 core tests.  The patch passed core unit tests.
     [exec] 
     [exec]     +1 contrib tests.  The patch passed contrib unit tests.
     [exec] 
     [exec] Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/462/testReport/
     [exec] Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/462/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
     [exec] Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/462/artifact/trunk/build/test/checkstyle-errors.html
     [exec] Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch-h4.grid.sp2.yahoo.net/462/console
     [exec] 

{noformat}

> 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, HADOOP-6439-4.patch,
HADOOP-6439-5.patch, HADOOP-6439-6.patch, HADOOP-6439-6.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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