[GitHub] [kafka] dajac commented on pull request #9902: KAFKA-12193: Re-resolve IPs after a client disconnects

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dajac commented on pull request #9902:
URL: https://github.com/apache/kafka/pull/9902#issuecomment-771527775


   @bob-barrett Thanks for the PR. For my understanding, have we considered changing the way backoff is applied instead of re-resolving when an established connection is closed. For instance, we could try all the resolved IPs before applying the backoff. However, we would still have to wait until the connection timeouts for each IP.
   
   Also, I suppose that we assume that closing connection is rather infrequent in normal circumstances so the cost of the DNS resolution is low. On the other hand, we relies on the DNS cache if the resolution happens really frequently. Am I getting this right? That seems reasonable. 
   
   I am trying to convince myself that this is the correct approach to address the issue.


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