OmniaGM commented on code in PR #14790:
URL: https://github.com/apache/kafka/pull/14790#discussion_r1399670915


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core/src/main/scala/kafka/server/ReplicaAlterLogDirsThread.scala:
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@@ -76,13 +82,49 @@ class ReplicaAlterLogDirsThread(name: String,
     futureLog.updateHighWatermark(partitionData.highWatermark)
     futureLog.maybeIncrementLogStartOffset(partitionData.logStartOffset, 
LogStartOffsetIncrementReason.LeaderOffsetIncremented)
 
-    if (partition.maybeReplaceCurrentWithFutureReplica())
-      removePartitions(Set(topicPartition))
+    directoryEventHandler match {
+      case DirectoryEventHandler.NOOP =>
+        if (partition.maybeReplaceCurrentWithFutureReplica())
+          removePartitions(Set(topicPartition))
+      case _ =>
+        maybePromoteFutureReplica(topicPartition, partition)
+    }
 
     quota.record(records.sizeInBytes)
     logAppendInfo
   }
 
+  // Visible for testing
+  def updatedAssignmentRequestStat(topicPartition: TopicPartition)(state: 
DirectoryEventRequestState): Unit = {
+    assignmentRequestStates.put(topicPartition, state)
+  }
+  private def maybePromoteFutureReplica(topicPartition: TopicPartition, 
partition: Partition) = {
+    val partitionRequestState = 
Option(assignmentRequestStates.get(topicPartition))
+    val topicId = partition.topicId
+    if (topicId.isEmpty)
+      throw new IllegalStateException(s"Topic ${topicPartition.topic()} exists 
but its ID doesn't exist.")

Review Comment:
   fixed



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