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https://issues.apache.org/jira/browse/PIG-993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766732#action_12766732
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Alan Gates commented on PIG-993:
--------------------------------

We looked over the failure info and couldn't understand why it was failing.  
I've rerun the unit tests multiple times since and seen no issue.  We've run it 
on several different machines and not seen an issue.  So I'm going to declare 
the test failure a fluke and commit the patch.

> [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, 
> TEST-org.apache.hadoop.zebra.io.TestCheckin.txt, 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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