showuon commented on code in PR #15951:
URL: https://github.com/apache/kafka/pull/15951#discussion_r1601512176


##########
core/src/main/scala/kafka/server/ReplicaManager.scala:
##########
@@ -2114,19 +2114,16 @@ class ReplicaManager(val config: KafkaConfig,
         partition.log.foreach { _ =>
           val leader = BrokerEndPoint(config.brokerId, "localhost", -1)
 
-          // Add future replica log to partition's map
-          partition.createLogIfNotExists(
-            isNew = false,
-            isFutureReplica = true,
-            offsetCheckpoints,
-            topicIds(partition.topic))
-
-          // pause cleaning for partitions that are being moved and start 
ReplicaAlterDirThread to move
-          // replica from source dir to destination dir
-          logManager.abortAndPauseCleaning(topicPartition)
-
-          futureReplicasAndInitialOffset.put(topicPartition, 
InitialFetchState(topicIds(topicPartition.topic), leader,
-            partition.getLeaderEpoch, futureLog.highWatermark))
+          if (partition.maybeCreateFutureReplica(futureLog.parentDir, 
offsetCheckpoints, topicIds(partition.topic))) {
+            // Add future replica log to partition's map

Review Comment:
   We need this as described in this comment: 
https://github.com/apache/kafka/pull/15951#discussion_r1601510877



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