joeCarf commented on code in PR #7502:
URL: https://github.com/apache/rocketmq/pull/7502#discussion_r1372587651


##########
broker/src/main/java/org/apache/rocketmq/broker/processor/AdminBrokerProcessor.java:
##########
@@ -440,6 +440,13 @@ private synchronized RemotingCommand 
updateAndCreateTopic(ChannelHandlerContext
             return response;
         }
 
+        if 
(topicConfig.equals(this.brokerController.getTopicConfigManager().getTopicConfigTable().get(topic)))
 {
+            LOGGER.info("Broker receive request to update or create topic={}, 
but topic exists, so idempotent, caller address={}",

Review Comment:
   log内容改成“topic对应的topicConfig没有发生变化“而不是”topic已存在“会不会语义更明确呢~



##########
broker/src/main/java/org/apache/rocketmq/broker/processor/AdminBrokerProcessor.java:
##########
@@ -440,6 +440,13 @@ private synchronized RemotingCommand 
updateAndCreateTopic(ChannelHandlerContext
             return response;
         }
 
+        if 
(topicConfig.equals(this.brokerController.getTopicConfigManager().getTopicConfigTable().get(topic)))
 {
+            LOGGER.info("Broker receive request to update or create topic={}, 
but topic exists, so idempotent, caller address={}",

Review Comment:
   log内容改成“topic对应的topicConfig没有发生变化“而不是”topic已存在“会不会语义更明确呢~



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