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https://issues.apache.org/jira/browse/PHOENIX-2965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15326570#comment-15326570
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Hudson commented on PHOENIX-2965:
---------------------------------
FAILURE: Integrated in Phoenix-master #1256 (See
[https://builds.apache.org/job/Phoenix-master/1256/])
PHOENIX-2965 Use DistinctPrefixFilter logic for COUNT(DISTINCT ...) and (larsh:
rev 951dd7a788d87efbe238ff6dec996d9d8acc4211)
* phoenix-core/src/main/java/org/apache/phoenix/iterate/BaseResultIterators.java
*
phoenix-core/src/it/java/org/apache/phoenix/end2end/DistinctPrefixFilterIT.java
* phoenix-core/src/test/java/org/apache/phoenix/compile/QueryCompilerTest.java
* phoenix-core/src/main/java/org/apache/phoenix/compile/GroupByCompiler.java
> Use DistinctPrefixFilter logic for COUNT(DISTINCT ...) and COUNT(...) GROUP BY
> ------------------------------------------------------------------------------
>
> Key: PHOENIX-2965
> URL: https://issues.apache.org/jira/browse/PHOENIX-2965
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Fix For: 4.8.0
>
> Attachments: 2965-v10.txt, 2965-v11.txt, 2965-v12.txt, 2965-v13.txt,
> 2965-v14.txt, 2965-v2.txt, 2965-v3.txt, 2965-v4.txt, 2965-v5.txt,
> 2965-v6.txt, 2965-v7.txt, 2965-v8.txt, 2965-v9.txt, 2965.txt,
> PHOENIX-2965_wip.patch
>
>
> Parent uses skip scanning to optimize DISTINCT and certain GROUP BY
> operations along the row key.
> COUNT queries are optimized differently, could be sped up significantly as
> well.
> [~giacomotaylor], I might need to help into where COUNT(DISTINCT) queries are
> planned and optimized.
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