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Posted to issues-all@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2020/10/24 01:57:00 UTC
[jira] [Updated] (IMPALA-10281) Implement count(distinct) function
(DataSketches/CPC)
[ https://issues.apache.org/jira/browse/IMPALA-10281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fucun Chu updated IMPALA-10281:
-------------------------------
Issue Type: Epic (was: New Feature)
> Implement count(distinct) function (DataSketches/CPC)
> -----------------------------------------------------
>
> Key: IMPALA-10281
> URL: https://issues.apache.org/jira/browse/IMPALA-10281
> Project: IMPALA
> Issue Type: Epic
> Components: Backend
> Reporter: Fucun Chu
> Priority: Major
>
> Implement the count(distinct) function from the DataSketches library for CPC in C++.
> General info about the sketch:
> [http://datasketches.apache.org/docs/CPC/CPC.html|http://datasketches.apache.org/docs/HLL/HLL.html]
> C++ implementation to wrap:
> [https://github.com/apache/incubator-datasketches-cpp/tree/master/cpc|https://github.com/apache/incubator-datasketches-cpp/tree/master/hll]
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