OmniaGM commented on code in PR #14790:
URL: https://github.com/apache/kafka/pull/14790#discussion_r1412455807


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core/src/main/scala/kafka/cluster/Partition.scala:
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@@ -613,7 +613,16 @@ class Partition(val topicPartition: TopicPartition,
   // Only ReplicaAlterDirThread will call this method and 
ReplicaAlterDirThread should remove the partition
   // from its partitionStates if this method returns true
   def maybeReplaceCurrentWithFutureReplica(): Boolean = {
-    // lock to prevent the log append by followers while checking if the log 
dir could be replaced with future log.
+    maybeFutureReplicaCaughtUp((futurePartitionLog: UnifiedLog) => {
+      logManager.replaceCurrentWithFutureLog(topicPartition)
+      futurePartitionLog.setLogOffsetsListener(logOffsetsListener)
+      log = futureLog
+      removeFutureLocalReplica(false)
+    })
+  }
+
+  def maybeFutureReplicaCaughtUp(callback: UnifiedLog => Unit): Boolean = {

Review Comment:
   rename it. 



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