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https://issues.apache.org/jira/browse/PIG-987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12762854#action_12762854
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Yan Zhou commented on PIG-987:
------------------------------

It's because this patch expose the env problem using lzo as compression that 
991 eventually fixes.

Can you commit 991's patch along with this? What are tthe failures from trunk? 
What are the error messages?

> [zebra] Zebra Column Group Access Control
> -----------------------------------------
>
>                 Key: PIG-987
>                 URL: https://issues.apache.org/jira/browse/PIG-987
>             Project: Pig
>          Issue Type: New Feature
>    Affects Versions: 0.6.0
>            Reporter: Yan Zhou
>            Assignee: Yan Zhou
>         Attachments: ColumnGroupSecurity.patch, 
> TEST-org.apache.hadoop.zebra.mapred.TestCheckin.txt
>
>
> Access Control: when processes try to read from the column groups, Zebra 
> should be able to handle allowed vs. disallowed user/application accesses.  
> The security is eventuallt granted by corresponding  HDFS security of the 
> data stored.
> Expected behavior when column group permissions are set:
>     When user selects only columns that they do not have permissions to 
> access, Zebra should return error with message "Error #: Permission denied 
> for accessing column <column name or names> 
> Access control applies to an entire column group, so all columns in a column 
> group have same permissions. 

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