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From "Deepak Jaiswal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17399) Semijoin: Do not remove semijoin branch if it feeds to TS->DPP_EVENT
Date Fri, 01 Sep 2017 18:50:01 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151014#comment-16151014
] 

Deepak Jaiswal commented on HIVE-17399:
---------------------------------------

[~gopalv] committed to master. Thanks Gopal.

> Semijoin: Do not remove semijoin branch if it feeds to TS->DPP_EVENT
> --------------------------------------------------------------------
>
>                 Key: HIVE-17399
>                 URL: https://issues.apache.org/jira/browse/HIVE-17399
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>         Attachments: HIVE-17399.1.patch, HIVE-17399.2.patch, HIVE-17399.3.patch, HIVE-17399.4.patch
>
>
> If there is an incoming semijoin branch to a TS which has DPP event, then try to keep
it as it may serve as an excellent filter for DPP thus reducing the input to join drastically.



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