[jira] [Work logged] (HIVE-23928) Support conversion of not-exists to Anti join directly

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-23928?focusedWorklogId=508935&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-508935 ]

ASF GitHub Bot logged work on HIVE-23928:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Nov/20 00:42
            Start Date: 09/Nov/20 00:42
    Worklog Time Spent: 10m 
      Work Description: github-actions[bot] closed pull request #1459:
URL: https://github.com/apache/hive/pull/1459


   


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

    Worklog Id:     (was: 508935)
    Time Spent: 20m  (was: 10m)

> Support conversion of not-exists to Anti join directly
> ------------------------------------------------------
>
>                 Key: HIVE-23928
>                 URL: https://issues.apache.org/jira/browse/HIVE-23928
>             Project: Hive
>          Issue Type: Bug
>            Reporter: mahesh kumar behera
>            Assignee: mahesh kumar behera
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The current anti join conversion does not support direct conversion of not-exists to anti join. The not exists sub query is converted first to left out join and then its converted to anti join. This may cause some of the optimization rule to be skipped.
>  



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