chia7712 commented on code in PR #16491:
URL: https://github.com/apache/kafka/pull/16491#discussion_r1661073537


##########
docs/ops.html:
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@@ -3971,7 +3971,10 @@ <h3>Enter Migration Mode on the Brokers</h3>
 
 # KRaft controller quorum configuration
 controller.quorum.voters=3000@localhost:9093
-controller.listener.names=CONTROLLER</code></pre>
+controller.listener.names=CONTROLLER
+
+# If the ZK broker is using a generated broker ID, disable broker ID generation
+broker.id.generation.enable=false</code></pre>

Review Comment:
   @showuon that is good question. maybe we can describe two solutions for 
users:
   
   1. `broker.id.generation.enable=false`. in migration, all brokers should 
have unique id already so it should be fine. 
   2. increase `reserved.broker.max.id`. users need to know the max node id in 
the cluster



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