jsancio commented on PR #12274:
URL: https://github.com/apache/kafka/pull/12274#issuecomment-1189538831

   > @jsancio I think the last question is that there may be more than one 
registration record for each broker after restarting it, so can we rely on the 
broker epoch? I think I need some time to check the logic before make a final 
decision.
   
   Yes. I think you can rely on broker epoch and broker id. Also the active 
controller is guaranteed to have read all of the records on the log before 
handling RPCs like heartbeat.


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