[zebra] Zebra need to support the virtual column 'source_table' for the
unsorted table unions also
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Key: PIG-1291
URL: https://issues.apache.org/jira/browse/PIG-1291
Project: Pig
Issue Type: New Feature
Reporter: Alok Singh
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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