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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1102) Collect number of spills per job
Date Wed, 23 Dec 2009 03:15:29 GMT

    [ https://issues.apache.org/jira/browse/PIG-1102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12793911#action_12793911
] 

Hadoop QA commented on PIG-1102:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12428760/PIG_1102.patch.1
  against trunk revision 893053.

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +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 generated 411 release audit warnings (more than the
trunk's current 408 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/Pig-Patch-h8.grid.sp2.yahoo.net/152/testReport/
Release audit warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/152/artifact/trunk/patchprocess/releaseAuditDiffWarnings.txt
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/152/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/152/console

This message is automatically generated.

> Collect number of spills per job
> --------------------------------
>
>                 Key: PIG-1102
>                 URL: https://issues.apache.org/jira/browse/PIG-1102
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Olga Natkovich
>            Assignee: Sriranjan Manjunath
>             Fix For: 0.7.0
>
>         Attachments: PIG_1102.patch, PIG_1102.patch.1
>
>
> Memory shortage is one of the main performance issues in Pig. Knowing when we spill do
the disk is useful for understanding query performance and also to see how certain changes
in Pig effect that.
> Other interesting stats to collect would be average CPU usage and max mem usage but I
am not sure if this information is easily retrievable.
> Using Hadoop counters for this would make sense.

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