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  1. Hive
  2. HIVE-4689

For outerjoins, joinEmitInterval might make wrong result

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.11.0
    • Fix Version/s: 0.12.0
    • Component/s: Query Processor
    • Labels:
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      Description

      Alias filter tag is calculated for each group and used for outer joins. But if joinEmitInterval is smaller than the group size, pre-matured alias filter tag would be used and might introduce different(wrong) result.

      It can be observed in join_1to1.q test but I cannot imagine proper solution which does not override intention of joinEmitInterval. Should it be disabled for outer joins?

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              • Assignee:
                navis Navis
                Reporter:
                navis Navis
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                • Created:
                  Updated:
                  Resolved: