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

["Jiale He (Jira)" <ji...@apache.org>]

Jiale He created KYLIN-5308:
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             Summary: 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
         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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