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https://issues.apache.org/jira/browse/HIVE-30107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Denys Kuzmenko updated HIVE-30107:
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Labels: performance (was: )
> Vectorized hash GROUP BY on a single string/binary key
> ------------------------------------------------------
>
> Key: HIVE-30107
> URL: https://issues.apache.org/jira/browse/HIVE-30107
> Project: Hive
> Issue Type: Improvement
> Reporter: Denys Kuzmenko
> Priority: Major
> Labels: performance
>
> operator 3.0–3.6×
> hive-mr3 fork adds VectorHashKeyWrapperSingleString, TwoString, ThreeString,
> SingleLongSingleString, SingleLongTwoString, TwoLongSingleString, ThreeLong
> and GeneralLongString. VectorHashKeyWrapperFactory.allocate picks one of them
> by key shape.
> They were never contributed upstream, which only has the single- and two-long
> versions.
>
>
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