[jira] [Created] (HIVE-21057) Make semi join reduction work with UNION

[Vineet Garg (JIRA)]

Vineet Garg created HIVE-21057:
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             Summary: Make semi join reduction work with UNION
                 Key: HIVE-21057
                 URL: https://issues.apache.org/jira/browse/HIVE-21057
             Project: Hive
          Issue Type: Improvement
          Components: Query Planning
            Reporter: Vineet Garg
            Assignee: Vineet Garg


HIVE-21007 disabled semi-join for plans containing UNION since it generates a 
operator tree which ends up producing invalid tez plan



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