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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-993) [zebra] Abitlity to drop a column group in a table
Date Fri, 16 Oct 2009 16:17:31 GMT

    [ https://issues.apache.org/jira/browse/PIG-993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766581#action_12766581
] 

Hadoop QA commented on PIG-993:
-------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12421881/zebra-drop-cg.patch
  against trunk revision 825712.

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

    +1 tests included.  The patch appears to include 33 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-h7.grid.sp2.yahoo.net/88/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/88/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/88/console

This message is automatically generated.

> [zebra] Abitlity to drop a column group in a table
> --------------------------------------------------
>
>                 Key: PIG-993
>                 URL: https://issues.apache.org/jira/browse/PIG-993
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>             Fix For: 0.6.0
>
>         Attachments: DropColumnGroupExample.java, zebra-drop-cg.patch, zebra-drop-cg.patch,
zebra-drop-cg.patch
>
>
> A Zebra table is stored as multiple sub tables each containing a set of columns called
column group (CG). The user specifies how these columns are grouped while creating a table
through the _storage hint_.
> For some of the large tables, it might be necessary for users to remove a set of columns
and retain the rest. This jira provides a way for users to delete an entire column group.

> The following comments will have more details on API and the semantics. 

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