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  1. Hive
  2. HIVE-22797

ACID: Remove the map-side GBY for the Merge cardinality check

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      Description

      The hash-aggregate of the cardinality check on the mapper is entirely useless as the ideal scenario is that we don't have any duplicates at all.

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            • Assignee:
              Unassigned
              Reporter:
              gopalv Gopal Vijayaraghavan
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