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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/02/28 11:05:48 UTC

[GitHub] [pulsar] mattisonchao commented on pull request #14486: [WIP][Broker] Fix many stack trace logs when concurrent mark delete.

mattisonchao commented on pull request #14486:
URL: https://github.com/apache/pulsar/pull/14486#issuecomment-1054140537


   > @mattisonchao Might relate to the backlog eviction? or the message TTL?
   
   I think this is because we have 25k consumers constantly acknowledging messages and then calling ``ManagedCursorImpl#setAcknowledgedPosition`` and we have another timed task ```` which also calls it to refresh the cursor position.
   
   
   There may be a point in time when ack and schedule flush the position at the same time, which will cause a check exception to be thrown.
   


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