[jira] [Commented] (HIVE-21834) Avoid unnecessary calls to simplify filter conditions

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-21834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16856221#comment-16856221 ] 

Jesus Camacho Rodriguez commented on HIVE-21834:
------------------------------------------------

Uploading an initial patch to trigger ptest and see the regressions that we would get if we do this.

> Avoid unnecessary calls to simplify filter conditions
> -----------------------------------------------------
>
>                 Key: HIVE-21834
>                 URL: https://issues.apache.org/jira/browse/HIVE-21834
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>         Attachments: HIVE-21834.patch
>
>
> Every time we create a filter, we try to simplify its condition. However, we already have a rule that simplifies the expressions and it is within the same loop as most of the rules that end up creating new filters. Hence, it may seem we should be able to remove some of the calls to simplify those conditions.



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