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From László Bodor (Jira) <j...@apache.org>
Subject [jira] [Assigned] (HIVE-23976) Enable vectorization for multi-col semi join reducers
Date Tue, 01 Sep 2020 12:59:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

László Bodor reassigned HIVE-23976:
-----------------------------------

    Assignee: László Bodor  (was: Stamatis Zampetakis)

> 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: László Bodor
>            Priority: Major
>
> 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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