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  1. Hive
  2. HIVE-23976

Enable vectorization for multi-col semi join reducers

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    Description

      HIVE-21196 introduces multi-column semi-join reducers in the query engine. However, the implementation relies on GenericUDFMurmurHash which is not vectorized thus the respective operators cannot be executed in vectorized mode.

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          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-24221 Use vectorizable expression to combine multiple columns in semijoin bloom filters

          • 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
          links to

          Web Link GitHub Pull Request #1458

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              abstractdog László Bodor
              zabetak Stamatis Zampetakis
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