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  1. Hive
  2. HIVE-23999

Unify the code creating single and multi column semijoin reducers

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    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
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    Description

      In HIVE-21196, we add a transformation capable of merging single column semijoin reducers to multi column semijoin reducer.

      The code for creating multi-column semijoin reducers in SemiJoinReductionMerge presents some similarities with the code creating single-column semijoin reducers in DynamicPartitionPruningOptimization.

      Possibly we could refactor the respective parts to unify the creation logic of semijoin reducers.

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          is related to

          Improvement - An improvement or enhancement to an existing feature or task. CALCITE-4163 Unify the code creating single and multi column semijoin reducers

          • Major - Major loss of function.
          • Closed
          requires

          Bug - A problem which impairs or prevents the functions of the product. HIVE-21196 Support semijoin reduction on multiple column join

          • Major - Major loss of function.
          • Closed

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              zabetak Stamatis Zampetakis
              zabetak Stamatis Zampetakis
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                Created:
                Updated: