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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2018/08/02 06:14:00 UTC

[jira] [Resolved] (KYLIN-3453) Improve cube size estimation for TOPN, COUNT DISTINCT

     [ https://issues.apache.org/jira/browse/KYLIN-3453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI resolved KYLIN-3453.
---------------------------------
    Resolution: Fixed

> Improve cube size estimation for TOPN, COUNT DISTINCT
> -----------------------------------------------------
>
>                 Key: KYLIN-3453
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3453
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Chao Long
>            Assignee: Chao Long
>            Priority: Major
>             Fix For: v2.5.0
>
>         Attachments: image-2018-07-24-16-29-07-359.png, image-2018-07-24-16-30-50-804.png, image-2018-07-24-16-33-43-231.png, image-2018-07-24-16-37-09-199.png, image-2018-07-24-17-11-26-283.png, image-2018-07-24-17-11-27-829.png, image-2018-07-24-17-12-25-880.png
>
>
> Currently, Kylin has poor cube size estimation for TOPN, COUNT DISTINCT. We should improve it, then we can get a reasonable split num when cube building. 



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