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From "Deepak Jaiswal (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (HIVE-17399) Do not remove semijoin branch if it feeds to TS->DPP_EVENT
Date Wed, 30 Aug 2017 03:05:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HIVE-17399 started by Deepak Jaiswal.
---------------------------------------------
> 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
>
> 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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