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https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13622927#comment-13622927
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Navis commented on HIVE-2340:
-----------------------------
CP for RS is correctly modifies schema of RS, and it makes CP tests for PTF
fail. But as suggested by Hagleitner, after making schema of RS intact even
after CP, those tests are resulted to success. I believe there is some
assumption on schema in CP for PTF.
> 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-2340.12.patch,
> HIVE-2340.13.patch, HIVE-2340.14.patch,
> HIVE-2340.14.rebased_and_schema_clone.patch, HIVE-2340.1.patch.txt,
> HIVE-2340.D1209.10.patch, HIVE-2340.D1209.11.patch, HIVE-2340.D1209.12.patch,
> HIVE-2340.D1209.13.patch, HIVE-2340.D1209.14.patch, 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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