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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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