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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/09/02 13:33:00 UTC

[jira] [Updated] (HIVE-23976) Enable vectorization for multi-col semi join reducers

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

ASF GitHub Bot updated HIVE-23976:
----------------------------------
    Labels: pull-request-available  (was: )

> 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
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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