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https://issues.apache.org/jira/browse/HIVE-17399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16146827#comment-16146827
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Gopal V commented on HIVE-17399:
--------------------------------
LGTM - +1 tests pending.
One minor nit - "assert false;" should be followed by a return, since not
everyone runs with -ea.
> 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
>
>
> 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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