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Posted to issues@hive.apache.org by "Jason Dere (JIRA)" <ji...@apache.org> on 2017/02/08 23:51:42 UTC

[jira] [Commented] (HIVE-15853) Semijoin removed in case of dynamically partitioned hash join

    [ https://issues.apache.org/jira/browse/HIVE-15853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15858719#comment-15858719 ] 

Jason Dere commented on HIVE-15853:
-----------------------------------

+1. One small nit, can you some extra comments on the line above to mention why the semijoin opt branch should be removed if the RS parent is being removed?

> Semijoin removed in case of dynamically partitioned hash join
> -------------------------------------------------------------
>
>                 Key: HIVE-15853
>                 URL: https://issues.apache.org/jira/browse/HIVE-15853
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>         Attachments: HIVE-15853.1.patch
>
>
> Incase of dynamically partitioned hash join, the semijoin branch is removed to avoid a cycle even though it does not create a cycle.



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