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https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13568466#comment-13568466
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Phabricator commented on HIVE-2340:
-----------------------------------
navis has commented on the revision "HIVE-2340 [jira] optimize orderby followed
by a groupby".
INLINE COMMENTS
common/src/java/org/apache/hadoop/hive/conf/HiveConf.java:521 Yes, it is.
There should be a better configuration if possible.
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java:787
Yes, should be 'fixed' as sorted state. I'll rename it.
I think there should be a configuration preventing MAPJOINable JOIN from
being merged with next RS. But seemed hard to know if it's mapjoinable. Any
idea?
ql/src/java/org/apache/hadoop/hive/ql/ppd/PredicateTransitivePropagate.java:136
Yes, typos. I'll remove this from patch.
ql/src/test/queries/clientpositive/reduce_deduplicate.q:7 ok.
REVISION DETAIL
https://reviews.facebook.net/D1209
To: JIRA, navis
Cc: hagleitn
> optimize orderby followed by a groupby
> --------------------------------------
>
> Key: HIVE-2340
> URL: https://issues.apache.org/jira/browse/HIVE-2340
> Project: Hive
> Issue Type: Sub-task
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
> Labels: perfomance
> Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.1.patch,
> ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.2.patch,
> ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.3.patch,
> ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.4.patch,
> ASF.LICENSE.NOT.GRANTED--HIVE-2340.D1209.5.patch, HIVE-2340.1.patch.txt,
> HIVE-2340.D1209.6.patch, HIVE-2340.D1209.7.patch, HIVE-2340.D1209.8.patch,
> HIVE-2340.D1209.9.patch, testclidriver.txt
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY
> optimizer(cluster-by following group-by).
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