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https://issues.apache.org/jira/browse/PIG-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12748131#action_12748131
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Hadoop QA commented on PIG-922:
-------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12417760/PIG-922-p1_4.patch
  against trunk revision 806668.

    +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-minerva.apache.org/178/testReport/
Findbugs warnings: 
http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/178/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: 
http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/178/console

This message is automatically generated.

> Logical optimizer: push up project
> ----------------------------------
>
>                 Key: PIG-922
>                 URL: https://issues.apache.org/jira/browse/PIG-922
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>    Affects Versions: 0.3.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>         Attachments: PIG-922-p1_0.patch, PIG-922-p1_1.patch, 
> PIG-922-p1_2.patch, PIG-922-p1_3.patch, PIG-922-p1_4.patch
>
>
> This is a continuation work of 
> [PIG-697|https://issues.apache.org/jira/browse/PIG-697]. We need to add 
> another rule to the logical optimizer: Push up project, ie, prune columns as 
> early as possible.

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