OmniaGM commented on code in PR #14881:
URL: https://github.com/apache/kafka/pull/14881#discussion_r1420746154


##########
core/src/main/scala/kafka/server/ReplicaManager.scala:
##########
@@ -2626,8 +2601,16 @@ class ReplicaManager(val config: KafkaConfig,
     localLeaders.forKeyValue { (tp, info) =>
       getOrCreatePartition(tp, delta, info.topicId).foreach { case (partition, 
isNew) =>
         try {
+          val partitionDirectoryId: Option[Uuid] =
+            Option(newImage.topics().getPartition(info.topicId(), 
partition.partitionId)).map(_.directory(localBrokerId))
+
           val state = info.partition.toLeaderAndIsrPartitionState(tp, isNew)
-          partition.makeLeader(state, offsetCheckpoints, Some(info.topicId))
+          partition.makeLeader(state, offsetCheckpoints, Some(info.topicId), 
partitionDirectoryId)
+
+          if (!delta.localChanges(localBrokerId).directoryIds().isEmpty) {
+            maybeUpdateTopicAssignment(partition, partitionDirectoryId)
+          }

Review Comment:
   We need to update the assignment with the actual directory ID of the 
partition created at the end not with `directoryIds`. This info is available in 
`Partition` (not `TopicPartition`) which we don't have at this point. 



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