Matt McCline created HIVE-9248:
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Summary: Vectorization : Tez Reduce vertex not getting vectorized
when GROUP BY is Hash mode
Key: HIVE-9248
URL: https://issues.apache.org/jira/browse/HIVE-9248
Project: Hive
Issue Type: Bug
Components: Tez, Vectorization
Affects Versions: 0.14.0
Reporter: Matt McCline
Assignee: Matt McCline
Priority: Critical
Under Tez and Vectorization, ReduceWork not getting vectorized unless it GROUP
BY operator is MergePartial. Add valid cases where GROUP BY is Hash (and
presumably there are downstream reducers that will do MergePartial).
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