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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-23973) Use SQL constraints to improve join reordering algorithm (III)
Date Sat, 01 Aug 2020 00:18:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ASF GitHub Bot updated HIVE-23973:
----------------------------------
    Labels: pull-request-available  (was: )

> Use SQL constraints to improve join reordering algorithm (III)
> --------------------------------------------------------------
>
>                 Key: HIVE-23973
>                 URL: https://issues.apache.org/jira/browse/HIVE-23973
>             Project: Hive
>          Issue Type: Improvement
>          Components: CBO
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> This issue focuses on pulling non-filtering column appending FK-PK joins to the top of
the plan. Among other improvements, this will avoid unnecessary shuffling of data in intermediate
stages.



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