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