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Posted to issues@hive.apache.org by "Vineet Garg (JIRA)" <ji...@apache.org> on 2018/05/03 05:41:00 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 ]

Vineet Garg reassigned HIVE-19358:
----------------------------------

    Assignee: Jesus Camacho Rodriguez  (was: Vineet Garg)

> 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: Jesus Camacho Rodriguez
>            Priority: Major
>         Attachments: HIVE-19358.01.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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