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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-12325) Turn hive.map.groupby.sorted on by default
Date Sat, 07 Nov 2015 07:54:10 GMT

     [ https://issues.apache.org/jira/browse/HIVE-12325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lefty Leverenz updated HIVE-12325:
----------------------------------
    Labels: TODOC2.0  (was: )

> 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
>            Assignee: Chetna Chaudhari
>              Labels: TODOC2.0
>             Fix For: 2.0.0
>
>         Attachments: HIVE-12325.1.patch
>
>
> When applicable it can avoid shuffle phase altogether for group by, which will be a performance
win. 



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