Arun Suresh created SENTRY-527:
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             Summary: Handle PostEventListener restarts by the Metastore
                 Key: SENTRY-527
                 URL: https://issues.apache.org/jira/browse/SENTRY-527
             Project: Sentry
          Issue Type: Bug
            Reporter: Arun Suresh


Metastore sometimes restarts the PostEventListeners. Since the Sentry 
MetastorePlugin maintains the sequenceId as an instance variable, this would 
result in the sequence number getting reset.

This in turn results in un-necessary (and costly) sync messages being sent by 
HMS to Sentry.

This can be seen when {{TestHDFSIntegration}} is run in a loop a couple of 
times.



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