hachikuji commented on code in PR #12538:
URL: https://github.com/apache/kafka/pull/12538#discussion_r949654185


##########
core/src/test/java/kafka/testkit/KafkaClusterTestKit.java:
##########
@@ -275,15 +275,15 @@ metaProperties, config, new MetadataRecordSerde(), 
metadataPartition, KafkaRaftS
                     executorService.shutdownNow();
                     executorService.awaitTermination(5, TimeUnit.MINUTES);
                 }
-                for (ControllerServer controller : controllers.values()) {
-                    controller.shutdown();
-                }
                 for (BrokerServer brokerServer : brokers.values()) {
                     brokerServer.shutdown();
                 }
                 for (KafkaRaftManager<ApiMessageAndVersion> raftManager : 
raftManagers.values()) {
                     raftManager.shutdown();
                 }
+                for (ControllerServer controller : controllers.values()) {
+                    controller.shutdown();
+                }

Review Comment:
   I was trying to make the order consistent with `KafkaRaftServer`. The 
circular dependence between `RaftManager` and `ControllerServer` makes this a 
bit awkward in any case. `RaftManager` needs the `SocketServer` from 
`ControllerServer`. On the other hand, `ControllerServer` needs to register a 
listener with `RaftManager`. Perhaps we need to pull `SocketServer` up to a 
higher level? But that would be a major effort.



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