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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-23973) Use SQL constraints to improve join reordering algorithm (III)
Date Mon, 03 Aug 2020 14:14:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-23973?focusedWorklogId=465712&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-465712
]

ASF GitHub Bot logged work on HIVE-23973:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 03/Aug/20 14:13
            Start Date: 03/Aug/20 14:13
    Worklog Time Spent: 10m 
      Work Description: jcamachor merged pull request #1349:
URL: https://github.com/apache/hive/pull/1349


   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 465712)
    Time Spent: 0.5h  (was: 20m)

> 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: 0.5h
>  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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