rajinisivaram commented on a change in pull request #11448:
URL: https://github.com/apache/kafka/pull/11448#discussion_r745400319



##########
File path: core/src/main/scala/kafka/server/KafkaServer.scala
##########
@@ -114,7 +114,9 @@ class KafkaServer(
   var controlPlaneRequestHandlerPool: KafkaRequestHandlerPool = null
 
   var logDirFailureChannel: LogDirFailureChannel = null
-  var logManager: LogManager = null
+  var _logManager: LogManager = null

Review comment:
       Do we want to make this private?

##########
File path: core/src/main/scala/kafka/server/DynamicBrokerConfig.scala
##########
@@ -204,16 +204,19 @@ class DynamicBrokerConfig(private val kafkaConfig: 
KafkaConfig) extends Logging
   private val reconfigurables = mutable.Buffer[Reconfigurable]()
   private val brokerReconfigurables = mutable.Buffer[BrokerReconfigurable]()
   private val lock = new ReentrantReadWriteLock
-  private var currentConfig = kafkaConfig
+  private var currentConfig: KafkaConfig = null
   private val dynamicConfigPasswordEncoder = 
maybeCreatePasswordEncoder(kafkaConfig.passwordEncoderSecret)
 
-  private[server] def initialize(zkClient: KafkaZkClient): Unit = {
+  private[server] def initialize(zkClientOpt: Option[KafkaZkClient]): Unit = {

Review comment:
       In the non-ZK world, does the initialization using existing dynamic 
configs happen later? Or does the original Kafka config contain the existing 
dynamic configs as well?




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