hachikuji commented on a change in pull request #11503:
URL: https://github.com/apache/kafka/pull/11503#discussion_r750496118



##########
File path: core/src/main/scala/kafka/server/KafkaConfig.scala
##########
@@ -2007,8 +2007,13 @@ class KafkaConfig private(doLog: Boolean, val props: 
java.util.Map[_, _], dynami
       "offsets.commit.required.acks must be greater or equal -1 and less or 
equal to offsets.topic.replication.factor")
     require(BrokerCompressionCodec.isValid(compressionType), "compression.type 
: " + compressionType + " is not valid." +
       " Valid options are " + 
BrokerCompressionCodec.brokerCompressionOptions.mkString(","))
-    require(!processRoles.contains(ControllerRole) || 
controllerListeners.nonEmpty,
-      s"${KafkaConfig.ControllerListenerNamesProp} cannot be empty if the 
server has the controller role")
+    if (usesSelfManagedQuorum) {

Review comment:
       I'm a little unsure about requiring the broker have only one controller 
listener. Technically it's an incompatible change. Another way we could handle 
it is to log a warning that other specified ports will not be used. 
   
   The second part sounds good to me.




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