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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1330) Move pruned schema tracking logic from LoadFunc to core code
Date Thu, 01 Apr 2010 07:09:27 GMT

    [ https://issues.apache.org/jira/browse/PIG-1330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852269#action_12852269

Hadoop QA commented on PIG-1330:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 929737.

    +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 does not increase the total number of release audit

    +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/274/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/274/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/274/console

This message is automatically generated.

> Move pruned schema tracking logic from LoadFunc to core code
> ------------------------------------------------------------
>                 Key: PIG-1330
>                 URL: https://issues.apache.org/jira/browse/PIG-1330
>             Project: Pig
>          Issue Type: Improvement
>          Components: impl
>    Affects Versions: 0.7.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.7.0
>         Attachments: PIG-1330-1.patch
> Currently, LoadFunc.getSchema require a schema after column pruning. The good side of
this is LoadFunc.getSchema matches the data it actually load. This gives a sense of consistency.
However, by doing this, every LoadFunc need to keep track of the columns pruned. This is an
unnecessary burden to the LoadFunc writer and it is very error proning. This issue is to move
this logic from LoadFunc to Pig core. LoadFunc.getSchema then only need to return original
schema even after pruning.

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