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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16260) Remove parallel edges of semijoin with map joins.
Date Sat, 25 Mar 2017 05:10:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15941583#comment-15941583
] 

Lefty Leverenz commented on HIVE-16260:
---------------------------------------

[~djaiswal], you just need a Confluence username to get wiki write access, as described here:

* [About This Wiki -- How to get permission to edit | https://cwiki.apache.org/confluence/display/Hive/AboutThisWiki#AboutThisWiki-Howtogetpermissiontoedit]

You can either tell me your username here or send your request to user@hive.

> Remove parallel edges of semijoin with map joins.
> -------------------------------------------------
>
>                 Key: HIVE-16260
>                 URL: https://issues.apache.org/jira/browse/HIVE-16260
>             Project: Hive
>          Issue Type: Task
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>              Labels: TODOC2.2
>             Fix For: 2.2.0
>
>         Attachments: HIVE-16260.1.patch, HIVE-16260.2.patch, HIVE-16260.3.patch, HIVE-16260.4.patch,
HIVE-16260.5.patch
>
>
> Remove parallel edges of semijoin with map joins as they don't give any benefit to the
query.
> Also, ensure that bloom filters are created to handle at least 1M entries and the semijoin
is disabled if the big table has less than 1M rows.
> Both these features are configurable.



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