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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18979) Enable AggregateReduceFunctionsRule from Calcite
Date Thu, 22 Mar 2018 16:46:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16409858#comment-16409858
] 

Ashutosh Chauhan commented on HIVE-18979:
-----------------------------------------

+1

> Enable AggregateReduceFunctionsRule from Calcite
> ------------------------------------------------
>
>                 Key: HIVE-18979
>                 URL: https://issues.apache.org/jira/browse/HIVE-18979
>             Project: Hive
>          Issue Type: Improvement
>          Components: CBO
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>         Attachments: HIVE-18979.01.patch, HIVE-18979.02.patch, HIVE-18979.patch
>
>
> The rule rewrites aggregate functions into simpler ones. It should help us gathering
more common sub-expressions for a given plan, and it should have a positive effect on materialized
view rewriting coverage too.



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