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Posted to issues@hive.apache.org by "Chetna Chaudhari (JIRA)" <ji...@apache.org> on 2015/11/05 04:47:27 UTC

[jira] [Commented] (HIVE-12325) Turn hive.map.groupby.sorted on by default

    [ https://issues.apache.org/jira/browse/HIVE-12325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14991072#comment-14991072 ] 

Chetna Chaudhari commented on HIVE-12325:
-----------------------------------------

I think along with this we should turn on {{hive.map.groupby.sorted.testmode}} as well. [~ashutoshc] any thoughts.

> Turn hive.map.groupby.sorted on by default
> ------------------------------------------
>
>                 Key: HIVE-12325
>                 URL: https://issues.apache.org/jira/browse/HIVE-12325
>             Project: Hive
>          Issue Type: Improvement
>          Components: Logical Optimizer
>            Reporter: Ashutosh Chauhan
>
> When applicable it can avoid shuffle phase altogether for group by, which will be a performance win. 



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