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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1291) [zebra] Zebra need to support the virtual column 'source_table' for the unsorted table unions also
Date Wed, 07 Apr 2010 00:16:33 GMT

    [ https://issues.apache.org/jira/browse/PIG-1291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854270#action_12854270
] 

Xuefu Zhang commented on PIG-1291:
----------------------------------

Please submit to let Hudson run first.

> [zebra] Zebra need to support the virtual column 'source_table' for the unsorted table
unions also 
> ---------------------------------------------------------------------------------------------------
>
>                 Key: PIG-1291
>                 URL: https://issues.apache.org/jira/browse/PIG-1291
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Alok Singh
>             Fix For: 0.8.0
>
>         Attachments: PIG-1291.patch
>
>
> In Pig contrib project zebra,
>  When user do the union of the sorted tables, the resulting table contains a virtual
column called  'source_table'.
> Which allows user to know the original table name from where the content of the row of
the result table is coming from.
> This feature is also very useful for the case when the input tables are not sorted.
> Based on the discussion with the zebra dev team, it should be easy to implement.
> I am filing this enhancemnet jira for zebra.
> Alok

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