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From "Krisztian Kasa (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-22785) Update/delete/merge statements not optimized through CBO
Date Tue, 10 Mar 2020 18:10:00 GMT

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

Krisztian Kasa updated HIVE-22785:
----------------------------------
    Status: Open  (was: Patch Available)

> 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
>         Attachments: HIVE-22785.1.patch, HIVE-22785.2.patch, HIVE-22785.2.patch, HIVE-22785.3.patch,
HIVE-22785.4.patch, HIVE-22785.5.patch
>
>
> 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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