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Posted to issues-all@impala.apache.org by "Fucun Chu (Jira)" <ji...@apache.org> on 2021/04/29 13:11:01 UTC

[jira] [Resolved] (IMPALA-10631) Upgrade DataSketches to version 3.0.0

     [ https://issues.apache.org/jira/browse/IMPALA-10631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fucun Chu resolved IMPALA-10631.
--------------------------------
    Fix Version/s: Impala 4.0
       Resolution: Fixed

> Upgrade DataSketches to version 3.0.0
> -------------------------------------
>
>                 Key: IMPALA-10631
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10631
>             Project: IMPALA
>          Issue Type: New Feature
>    Affects Versions: Impala 4.0
>            Reporter: Fucun Chu
>            Assignee: Fucun Chu
>            Priority: Major
>             Fix For: Impala 4.0
>
>
> DataSketches v3.0.0 notes
> ??Introduction of new Relative Error Quantiles Sketch,??
> ??Added Tuple sketch and rewritten Theta sketch to share the same base,??
> ??Performance improvement of HLL sketch,??
> ??Removed serialization of Update Theta sketch and Union, and HLL Union,??
> ??Added support for passing instances of allocators??
> First update the Theta sketch serialization interface  IMPALA-10632, and then update the external DataSketches files CPC/HLL/KLL/Theta to version 3.0.0



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