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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/03/25 05:22:00 UTC

[jira] [Updated] (HIVE-26072) Enable vectorization for stats gathering (tablescan op)

     [ https://issues.apache.org/jira/browse/HIVE-26072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HIVE-26072:
----------------------------------
    Labels: pull-request-available  (was: )

> Enable vectorization for stats gathering (tablescan op)
> -------------------------------------------------------
>
>                 Key: HIVE-26072
>                 URL: https://issues.apache.org/jira/browse/HIVE-26072
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Rajesh Balamohan
>            Assignee: Ayush Saxena
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> https://issues.apache.org/jira/browse/HIVE-24510 enabled vectorization for compute_bit_vector. 
> But tablescan operator for stats gathering is disabled by default.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java#L2577]
> Need to enable vectorization for this. This can significantly reduce runtimes for analyze statements for large tables.



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