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Posted to issues@kylin.apache.org by "JiangYang (Jira)" <ji...@apache.org> on 2021/05/08 09:33:00 UTC

[jira] [Assigned] (KYLIN-4992) Source row count statistics calculated in a wrong way in MergeDictionaryMapper

     [ https://issues.apache.org/jira/browse/KYLIN-4992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

JiangYang reassigned KYLIN-4992:
--------------------------------

    Assignee: JiangYang

> Source row count statistics calculated in a wrong way in MergeDictionaryMapper
> ------------------------------------------------------------------------------
>
>                 Key: KYLIN-4992
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4992
>             Project: Kylin
>          Issue Type: Bug
>    Affects Versions: v3.0.0, v2.6.2, v2.6.3, v3.1.0, v3.0.1, v3.0.2, v3.1.1, v3.1.2
>            Reporter: Zhong Yanghong
>            Assignee: JiangYang
>            Priority: Critical
>
> With this bug, source row count will be smaller than the correct one and it will result in smaller cuboid size estimation and smaller region number. Finally it will impact job and query performance.



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