[jira] [Commented] (KYLIN-4839) Cube does not use the latest snapshot when build

["Yaqian Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-4839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17298556#comment-17298556 ] 

Yaqian Zhang commented on KYLIN-4839:
-------------------------------------

Hi:
I can't reproduce this problem in my environment. 
Can you providing the build log of the segment  with outdated snapshot? The log will output some information about the snapshot, which can help analyze the problem.

> Cube does not use the latest snapshot when build
> ------------------------------------------------
>
>                 Key: KYLIN-4839
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4839
>             Project: Kylin
>          Issue Type: Bug
>    Affects Versions: v3.0.2
>            Reporter: xue lin
>            Priority: Major
>             Fix For: v3.1.2
>
>         Attachments: fig1.png, fig2.png, fig3.png, fig4.png, fig5.png, fig6.png, fig7.png
>
>
> Cube does not use the latest snapshot when build， and this will introduce accuracy problems about data.
> detailed case1:
> the 2020-11-25 snapshot was used by cube between 2020-11-24 and 2020-11-25，but when builded after 2020-11-25, it used the 2020-11-07 snapshot rather than the latest snapshot , see fig1 fig2 fig3 
> detailed case2:
> data source from hive changed on 20201201，the code trigger on 20201202. see fig4
> so there should have 2 snapshots, one is before changed from hive ,the other is after. see fig5
> from  fig6 we can see that the cubes used the 2020-12-01 snapshot between 20201126 and 20201201;  between 20201201 and 20201202, between 20201204 and 20201205; between 20201205 and 20201206; between 20201206and 20201207;
> but from fig7 the cubes used  the 2020-12-02 snapshot between 20201202and 20201203;  between 20201203 and 20201204;  see fig 7
>  
>  
>  



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