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Posted to issues@hive.apache.org by "Denys Kuzmenko (Jira)" <ji...@apache.org> on 2026/09/30 19:41:00 UTC

[jira] [Updated] (HIVE-30120) Vectorization: speed up hash GROUP BY on string keys

     [ https://issues.apache.org/jira/browse/HIVE-30120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Denys Kuzmenko updated HIVE-30120:
----------------------------------
    Description: 
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.

> Vectorization: speed up hash GROUP BY on string keys
> ----------------------------------------------------
>
>                 Key: HIVE-30120
>                 URL: https://issues.apache.org/jira/browse/HIVE-30120
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Denys Kuzmenko
>            Priority: Major
>
> 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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