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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2925) Support non-MR fetching for simple queries with select/limit/filter operations only
Date Mon, 04 Aug 2014 01:55:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14084218#comment-14084218
] 

Navis commented on HIVE-2925:
-----------------------------

"minimal" takes SELECT STAR only. But "more" can take any kind of expressions in SELECT clause
including UDFs. (UDTF and Lateral view is not supported yet, which is under review process
in HIVE-5718). Thanks, Lefty.

> Support non-MR fetching for simple queries with select/limit/filter operations only
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-2925
>                 URL: https://issues.apache.org/jira/browse/HIVE-2925
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 0.10.0
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>             Fix For: 0.10.0
>
>         Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2925.D2607.1.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2925.D2607.2.patch,
ASF.LICENSE.NOT.GRANTED--HIVE-2925.D2607.3.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2925.D2607.4.patch,
HIVE-2925.1.patch.txt, HIVE-2925.2.patch.txt, HIVE-2925.3.patch.txt
>
>
> It's trivial but frequently asked by end-users. Currently, select queries with simple
conditions or limit should run MR job which takes some time especially for big tables, making
the people irritated.
> For that kind of simple queries, using fetch task would make them happy.



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