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From "Chao Long (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KYLIN-3453) Improve cube size estimation for TOPN, COUNT DISTINCT
Date Tue, 24 Jul 2018 08:31:00 GMT

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

Chao Long updated KYLIN-3453:
-----------------------------
    Attachment:     (was: image-2018-07-24-16-30-11-726.png)

> 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
>
>
> 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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