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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (Jira)" <ji...@apache.org> on 2020/01/31 21:19:00 UTC

[jira] [Assigned] (HIVE-22785) Update/delete/merge statements not optimized through CBO

     [ https://issues.apache.org/jira/browse/HIVE-22785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez reassigned HIVE-22785:
----------------------------------------------

    Assignee: Krisztian Kasa

> Update/delete/merge statements not optimized through CBO
> --------------------------------------------------------
>
>                 Key: HIVE-22785
>                 URL: https://issues.apache.org/jira/browse/HIVE-22785
>             Project: Hive
>          Issue Type: Improvement
>          Components: CBO
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Krisztian Kasa
>            Priority: Critical
>
> Currently, CBO is bypassed for update/delete/merge statements.
> To support optimizing these statements through CBO, we need to complete three main tasks: 1) support for sort in Calcite planner, 2) support for SORT in AST converter, and 3) {{RewriteSemanticAnalyzer}} should extend {{CalcitePlanner}} instead of {{SemanticAnalyzer}}.



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