Stamatis Zampetakis created HIVE-23976:
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Summary: Enable vectorization for multi-col semi join reducers
Key: HIVE-23976
URL: https://issues.apache.org/jira/browse/HIVE-23976
Project: Hive
Issue Type: Improvement
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
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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