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Posted to issues@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2015/03/14 02:31:38 UTC

[jira] [Commented] (HIVE-9966) Get rid of customBucketMapJoin field from MapJoinDesc

    [ https://issues.apache.org/jira/browse/HIVE-9966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14361467#comment-14361467 ] 

Ashutosh Chauhan commented on HIVE-9966:
----------------------------------------

>From MapJoinOp traverse on big table side. If TS is encountered, then custom edge is needed, else not. 

> Get rid of customBucketMapJoin field from MapJoinDesc
> -----------------------------------------------------
>
>                 Key: HIVE-9966
>                 URL: https://issues.apache.org/jira/browse/HIVE-9966
>             Project: Hive
>          Issue Type: Task
>          Components: Query Planning, Tez
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>
> Currently, its used to determine whether BMJ is running in mapper or reducer in ReduceSinkMapJoinProc rule. But this determination can be made locally by examining operator tree in the rule.



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