[jira] [Commented] (KYLIN-5445) Epoch tables of metadata are created without primary key, which results in failure of creating table under specific versions of database

[ASF GitHub Bot (Jira)]

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https://issues.apache.org/jira/browse/KYLIN-5445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17692994#comment-17692994
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ASF GitHub Bot commented on KYLIN-5445:
---------------------------------------

sonarcloud[bot] commented on PR #2094:
URL: https://github.com/apache/kylin/pull/2094#issuecomment-1442767903

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> Epoch tables of metadata are created without primary key, which results in 
> failure of creating table under specific versions of database
> ----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KYLIN-5445
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5445
>             Project: Kylin
>          Issue Type: Bug
>          Components: Metadata
>    Affects Versions: 5.0-alpha
>            Reporter: Ruixuan Zhang
>            Assignee: Ruixuan Zhang
>            Priority: Major
>             Fix For: 5.0-alpha
>
>
> When KYLIN using jdbc to create epoch table, sometimes creating table will 
> results in failure under certain versions of database due to that table not 
> specifying the primary key.
> Therefore, the field target_epoch can be used as primary key, and its 
> previous constraint of being unique can be removed. For the environment that 
> the table has already exist, KYLIN will firstly check if the primary key 
> exists, if so, then target_epoch will be added as primary key.



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