jolshan commented on a change in pull request #10282:
URL: https://github.com/apache/kafka/pull/10282#discussion_r596248900



##########
File path: core/src/main/scala/kafka/server/ReplicaManager.scala
##########
@@ -1369,7 +1377,11 @@ class ReplicaManager(val config: KafkaConfig,
               val requestLeaderEpoch = partitionState.leaderEpoch
               val requestTopicId = topicIds.get(topicPartition.topic)
 
-              if (!partition.checkOrSetTopicId(requestTopicId)) {
+              val (topicIdOpt, partitionLogOpt) = partition.topicIdAndLog
+              if (!checkTopicId(requestTopicId, topicIdOpt, partitionLogOpt)) {

Review comment:
       This is also in the case of restarting the broker.

##########
File path: core/src/main/scala/kafka/server/ReplicaManager.scala
##########
@@ -1369,7 +1377,11 @@ class ReplicaManager(val config: KafkaConfig,
               val requestLeaderEpoch = partitionState.leaderEpoch
               val requestTopicId = topicIds.get(topicPartition.topic)
 
-              if (!partition.checkOrSetTopicId(requestTopicId)) {
+              val (topicIdOpt, partitionLogOpt) = partition.topicIdAndLog
+              if (!checkTopicId(requestTopicId, topicIdOpt, partitionLogOpt)) {

Review comment:
       This is also in the case of restarting the broker, as the log is not yet 
associated to partition.




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