Gaurav Jain commented on PIG-987:

Patch Reviewed


> [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
> 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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