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  1. IMPALA
  2. IMPALA-9593

Implement count(distinct) function (DataSketches/HLL)

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    • Epic
    • Status: In Progress
    • Major
    • Resolution: Unresolved
    • None
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    • Backend
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    • ghx-label-13

    Description

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

      General info about the sketch:
      http://datasketches.apache.org/docs/HLL/HLL.html

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

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            gaborkaszab Gabor Kaszab
            BoglarkaEgyed Boglarka Egyed

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