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Posted to issues@hive.apache.org by "AK97 (Jira)" <ji...@apache.org> on 2019/11/26 04:15:00 UTC

[jira] [Assigned] (HIVE-19358) CBO decorrelation logic should generate Hive operators

     [ https://issues.apache.org/jira/browse/HIVE-19358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

AK97 reassigned HIVE-19358:
---------------------------

    Assignee: AK97  (was: Jesus Camacho Rodriguez)

> CBO decorrelation logic should generate Hive operators
> ------------------------------------------------------
>
>                 Key: HIVE-19358
>                 URL: https://issues.apache.org/jira/browse/HIVE-19358
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: AK97
>            Priority: Major
>             Fix For: 3.1.0
>
>         Attachments: HIVE-19358.01.patch, HIVE-19358.02.patch, HIVE-19358.03.patch, HIVE-19358.04.patch, HIVE-19358.05.patch, HIVE-19358.patch, fix.patch
>
>
> Decorrelation logic may generate logical instances of the operators in the plan (e.g., LogicalFilter instead of HiveFilter). This leads to errors while costing the tree in the Volcano planner (used in MV rewriting), since logical operators do not have a cost associated to them.



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