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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-478) separate jvm param for mapper and reducer
Date Sat, 15 Aug 2009 16:43:14 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743735#action_12743735
] 

Hadoop QA commented on MAPREDUCE-478:
-------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12416639/MAPREDUCE-478_3_20090814.patch
  against trunk revision 804284.

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

    +1 tests included.  The patch appears to include 26 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 failed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/480/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/480/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/480/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/480/console

This message is automatically generated.

> separate jvm param for mapper and reducer
> -----------------------------------------
>
>                 Key: MAPREDUCE-478
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-478
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Koji Noguchi
>            Assignee: Arun C Murthy
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5684_0_20090420.patch, MAPREDUCE-478_0_20090804.patch, MAPREDUCE-478_0_20090804_yhadoop20.patch,
MAPREDUCE-478_1_20090806.patch, MAPREDUCE-478_1_20090806_yhadoop20.patch, MAPREDUCE-478_2_20090813.patch,
MAPREDUCE-478_2_20090813.patch, MAPREDUCE-478_2_20090813_yhadoop.patch, MAPREDUCE-478_3_20090814.patch,
MAPREDUCE-478_3_20090814_yhadoop.patch
>
>
> Memory footprint of mapper and reducer can differ. 
> It would be nice if we can pass different jvm param (mapred.child.java.opts) for mappers
and reducers.

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