You are viewing a plain text version of this content. The canonical link for it is here.

Posted to jira@arrow.apache.org by "Percy Camilo Triveño Aucahuasi (Jira)" <ji...@apache.org> on 2021/09/28 19:46:01 UTC

[jira] [Created] (ARROW-14158) [C++][Compute] Implement count distinct kernel using HyperLogLog

Percy Camilo Triveño Aucahuasi created ARROW-14158:
------------------------------------------------------

             Summary: [C++][Compute] Implement count distinct kernel using HyperLogLog
                 Key: ARROW-14158
                 URL: https://issues.apache.org/jira/browse/ARROW-14158
             Project: Apache Arrow
          Issue Type: New Feature
          Components: C++
    Affects Versions: 7.0.0
            Reporter: Percy Camilo Triveño Aucahuasi


Having a version of the aggregation kernel count distinct using HyperLogLog may be useful.

Note: The implementation should support the merge operator.

cc [~icook] [~lidavidm]

Some resources/links:
[http://algo.inria.fr/flajolet/Publications/FlFuGaMe07.pdf]
[https://engineering.fb.com/2018/12/13/data-infrastructure/hyperloglog/]
[https://github.com/facebookincubator/velox/tree/main/velox/aggregates/hyperloglog]



--
This message was sent by Atlassian Jira
(v8.3.4#803005)