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https://issues.apache.org/jira/browse/PIG-993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yan Zhou updated PIG-993:
-------------------------

    Attachment: zebra_drop_cg.patch

This new version  of patch is needed due to the upstream changes in Pig-992. 
Although this Jira is functionally independent of Pig-992, but the application 
sequence of the patches must be honored.

> [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
>
>
> 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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