chia7712 commented on code in PR #16280:
URL: https://github.com/apache/kafka/pull/16280#discussion_r1640131270


##########
core/src/main/scala/kafka/server/ConfigHandler.scala:
##########
@@ -239,19 +239,24 @@ class BrokerConfigHandler(private val brokerConfig: 
KafkaConfig,
 
   def processConfigChanges(brokerId: String, properties: Properties): Unit = {
     def getOrDefault(prop: String): Long = {
-      if (properties.containsKey(prop))
-        properties.getProperty(prop).toLong
-      else
-        QuotaConfigs.QUOTA_BYTES_PER_SECOND_DEFAULT
+      brokerConfig.dynamicConfig.currentDynamicBrokerConfigs get prop match {

Review Comment:
   Sorry that we need `QuotaConfigs.QUOTA_BYTES_PER_SECOND_DEFAULT`, since 
users may remove both "dynamic" value and "default" value. In that scenario, we 
need to set `QuotaConfigs.QUOTA_BYTES_PER_SECOND_DEFAULT` to quota. Please 
ignore my previous comment.
   
   BTW, both `currentDynamicDefaultConfigs` and `currentDynamicBrokerConfigs` 
do the deep copy. Could we reuse them?
   
   



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