[jira] [Commented] (KYLIN-5308) The old transaction is not interrupted when Epoch renew retry

[ASF GitHub Bot (Jira)]

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https://issues.apache.org/jira/browse/KYLIN-5308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17639956#comment-17639956
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ASF GitHub Bot commented on KYLIN-5308:
---------------------------------------

sonarcloud[bot] commented on PR #2039:
URL: https://github.com/apache/kylin/pull/2039#issuecomment-1328901250

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> The old transaction is not interrupted when Epoch renew retry
> -------------------------------------------------------------
>
>                 Key: KYLIN-5308
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5308
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: Jiale He
>            Assignee: Jiale He
>            Priority: Critical
>         Attachments: image-2022-11-28-16-32-00-356.png
>
>
> kylin fails to write data to the new transaction because the old transaction 
> is not interrupted during the Renew Epoch Retry. As a result, Kylin loses the 
> epoch.
>  
> When Epoch Renew occurs, the write to the database times out and tries again. 
> As the old transaction is not rolled back during the retry, the old 
> transaction is successfully written to the database and MVCC+1 occurs. When a 
> new transaction writes to the database, it will check the MVCC. If the 
> detection fails, kylin will think that the Epoch is lost.
> !image-2022-11-28-16-32-00-356.png!



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