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


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:


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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:
>             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

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