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Posted to issues@hive.apache.org by "Jason Dere (JIRA)" <ji...@apache.org> on 2017/02/01 00:21:52 UTC

[jira] [Commented] (HIVE-15748) Remove cycles created due to semi join branch and map join Op on same operator pipeline

    [ https://issues.apache.org/jira/browse/HIVE-15748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847769#comment-15847769 ] 

Jason Dere commented on HIVE-15748:
-----------------------------------

+1

> Remove cycles created due to semi join branch and map join Op on same operator pipeline
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-15748
>                 URL: https://issues.apache.org/jira/browse/HIVE-15748
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>         Attachments: HIVE-15748.1.patch, HIVE-15748.2.patch, HIVE-15748.3.patch
>
>
> If a semi join branch and map join operator are on same operator pipeline, then there could be a cycle created. Where the other map feeding into the mapjoin operator is waiting for the semi join branch to finish causing a cycle.



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