You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hive.apache.org by "Ayush Saxena (Jira)" <ji...@apache.org> on 2022/03/25 04:22:00 UTC

[jira] [Assigned] (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 ]

Ayush Saxena reassigned HIVE-26072:
-----------------------------------

    Assignee: Ayush Saxena

> 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
>
> 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.



--
This message was sent by Atlassian Jira
(v8.20.1#820001)