linlinnn edited a comment on pull request #10240:
URL: https://github.com/apache/pulsar/pull/10240#issuecomment-826029000


   @MarvinCai 
   Sorry, I do not get your point.
   In the scene of the last message(there is no more message come to invoke 
notifyPendingReceive)
   IMO, this is a trade-off concerns, if we add lock, we will lose 45% 
performance, I prefer to add a monitor thread to deal with the boundary case 
even though makeing the receiving of messages less timely.


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