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Posted to issues-all@impala.apache.org by "Quanlong Huang (Jira)" <ji...@apache.org> on 2021/07/11 12:31:00 UTC
[jira] [Commented] (IMPALA-10281) Implement count(distinct)
function (DataSketches/CPC)
[ https://issues.apache.org/jira/browse/IMPALA-10281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17378648#comment-17378648 ]
Quanlong Huang commented on IMPALA-10281:
-----------------------------------------
Can we resolve this?
> 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
> Assignee: 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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