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Posted to issues-all@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2021/05/26 15:17:00 UTC

[jira] [Created] (IMPALA-10716) Implement count(distinct) function (DataSketches/Tuple)

Fucun Chu created IMPALA-10716:
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             Summary: Implement count(distinct) function (DataSketches/Tuple)
                 Key: IMPALA-10716
                 URL: https://issues.apache.org/jira/browse/IMPALA-10716
             Project: IMPALA
          Issue Type: Epic
          Components: Backend
            Reporter: Fucun Chu


Implement the count(distinct) function from the DataSketches library for Tuple in C++.

General info about the sketch:
https://datasketches.apache.org/docs/Tuple/TupleOverview.html

C++ implementation to wrap:
https://github.com/apache/datasketches-cpp/tree/master/tuple



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