nodece commented on issue #25146:
URL: https://github.com/apache/pulsar/issues/25146#issuecomment-3758945593

   > How could this happen?
   
   Under high broker load or in extreme timing conditions, the broker might 
fail to deliver the close consumer command to the client, even though the TCP 
connection itself remains healthy. If the connection is disconnected, the 
client would detect it via the Pulsar heartbeat and automatically resubscribe 
in the background.
   
   This issue impacts our customers in production. While updating the broker 
TLS version might improve reliability slightly, it cannot fully prevent this 
scenario. Just sharing my observation.


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