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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3641) CapacityScheduler should be more conservative assigning off-switch requests
Date Sun, 15 Jan 2012 11:26:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13186479#comment-13186479
] 

Hadoop QA commented on MAPREDUCE-3641:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12510620/MAPREDUCE-3641.patch
  against trunk revision .

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

    +1 tests included.  The patch appears to include 6 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 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

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

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

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1612//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1612//console

This message is automatically generated.
                
> CapacityScheduler should be more conservative assigning off-switch requests
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3641
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3641
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2, scheduler
>    Affects Versions: 0.23.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>            Priority: Blocker
>         Attachments: MAPREDUCE-3641.patch, MAPREDUCE-3641.patch, MAPREDUCE-3641.patch,
MAPREDUCE-3641.patch
>
>
> In hadoop-1, the CS is very conservative handing out off-switch assignments, we need
to do the same in YARN.
> We noticed performance regressions due to this, particularly for reduces.

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