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https://issues.apache.org/jira/browse/HIVE-2385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13092112#comment-13092112
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Hudson commented on HIVE-2385:
------------------------------
Integrated in Hive-trunk-h0.21 #918 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/918/])
HIVE-2385. Local Mode can be more aggressive if LIMIT optimization is on
(Siying Dong via cws)
cws : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1162202
Files :
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/LimitOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
> Local Mode can be more aggressive if LIMIT optimization is on
> -------------------------------------------------------------
>
> Key: HIVE-2385
> URL: https://issues.apache.org/jira/browse/HIVE-2385
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Siying Dong
> Assignee: Siying Dong
> Priority: Minor
> Fix For: 0.8.0
>
> Attachments: HIVE-2385.1.patch, HIVE-2385.2.patch
>
>
> Local mode now depends on total input data, but for LIMIT queries with no
> filtering, the data actually scanned can be much less and it's relatively
> predictable. We can place local mode more aggressively.
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