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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2018/03/16 17:37:00 UTC

[jira] [Assigned] (HIVE-18979) Enable AggregateReduceFunctionsRule from Calcite

     [ https://issues.apache.org/jira/browse/HIVE-18979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez reassigned HIVE-18979:
----------------------------------------------


> Enable AggregateReduceFunctionsRule from Calcite
> ------------------------------------------------
>
>                 Key: HIVE-18979
>                 URL: https://issues.apache.org/jira/browse/HIVE-18979
>             Project: Hive
>          Issue Type: Task
>          Components: CBO
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>
> 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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