[jira] [Created] (HIVE-24242) Relax safety checks in SharedWorkOptimizer

[Zoltan Haindrich (Jira)]

Zoltan Haindrich created HIVE-24242:
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             Summary: Relax safety checks in SharedWorkOptimizer
                 Key: HIVE-24242
                 URL: https://issues.apache.org/jira/browse/HIVE-24242
             Project: Hive
          Issue Type: Improvement
            Reporter: Zoltan Haindrich
            Assignee: Zoltan Haindrich


there are some checks to lock out problematic cases

For UnionOperator 
[here|https://github.com/apache/hive/blob/1507d80fd47aad38b87bba4fd58c1427ba89dbbf/ql/src/java/org/apache/hadoop/hive/ql/optimizer/SharedWorkOptimizer.java#L1571])

This check could prevent the optimization even if the Union is only visible 
from only 1 of the TS ops.





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