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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-962) Skewed join creates 3 map reduce jobs
Date Tue, 15 Sep 2009 22:51:57 GMT

    [ https://issues.apache.org/jira/browse/PIG-962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12755774#action_12755774
] 

Hadoop QA commented on PIG-962:
-------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12419679/skewedjoin2job.patch
  against trunk revision 815283.

    +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/Pig-Patch-h8.grid.sp2.yahoo.net/7/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/7/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/7/console

This message is automatically generated.

> Skewed join creates 3 map reduce jobs
> -------------------------------------
>
>                 Key: PIG-962
>                 URL: https://issues.apache.org/jira/browse/PIG-962
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Sriranjan Manjunath
>            Assignee: Sriranjan Manjunath
>         Attachments: skewedjoin2job.patch
>
>
> The first job is a load / store job which loads the data from PigStorage and stores it
in BinStorage. This hampers performance. The desired behavior is for the sampler to read from
PigStorage instead of relying on the first load/store job. Skewed join should thus be 2 M/R
jobs and not 3.

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