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