junrao commented on code in PR #13408:
URL: https://github.com/apache/kafka/pull/13408#discussion_r1148021906


##########
metadata/src/main/java/org/apache/kafka/controller/ClusterControlManager.java:
##########
@@ -596,6 +596,11 @@ public void checkBrokerEpoch(int brokerId, long 
brokerEpoch) {
         }
     }
 
+    public long getBrokerEpoch(int brokerId) {

Review Comment:
   We typically don't use getters. So this can just be `brokerEpoch`.



##########
metadata/src/test/java/org/apache/kafka/controller/ReplicationControlManagerTest.java:
##########
@@ -2296,4 +2379,17 @@ public void 
testProcessBrokerHeartbeatInControlledShutdown(MetadataVersion metad
 
         assertEquals(expectedRecords, result.records());
     }
+
+    private static BrokerState getBrokerState(int brokerId, Long brokerEpoch) {

Review Comment:
   We typically don't use getters. So this can just be `brokerState`.



##########
metadata/src/test/java/org/apache/kafka/controller/QuorumControllerTest.java:
##########
@@ -449,7 +450,8 @@ public void testBalancePartitionLeaders() throws Throwable {
                 
.setBrokerEpoch(brokerEpochs.get(partitionRegistration.leader));
             alterPartitionRequest.topics().add(topicData);
 
-            active.alterPartition(ANONYMOUS_CONTEXT, 
alterPartitionRequest).get();
+            short version = 
ANONYMOUS_CONTEXT.requestHeader().requestApiVersion();

Review Comment:
   Hmm, is this right? ANONYMOUS_CONTEXT's requestApiVersion seems to be always 
0?



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