junrao commented on a change in pull request #8524:
URL: https://github.com/apache/kafka/pull/8524#discussion_r414042238
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File path: core/src/main/scala/kafka/controller/KafkaController.scala
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@@ -1068,7 +1068,12 @@ class KafkaController(val config: KafkaConfig,
val candidatePartitions = topicsNotInPreferredReplica.keys.filter(tp
=> controllerContext.isReplicaOnline(leaderBroker, tp) &&
controllerContext.partitionsBeingReassigned.isEmpty &&
!topicDeletionManager.isTopicQueuedUpForDeletion(tp.topic) &&
- controllerContext.allTopics.contains(tp.topic))
+ controllerContext.allTopics.contains(tp.topic) &&
+
PartitionLeaderElectionAlgorithms.preferredReplicaPartitionLeaderElection(
+ controllerContext.partitionReplicaAssignment(tp),
+ controllerContext.partitionLeadershipInfo(tp).leaderAndIsr.isr,
+ controllerContext.liveBrokerIds.toSet).nonEmpty
Review comment:
In Election.leaderForPreferredReplica(), liveReplicas is computed as the
following. So, we probably want to be consistent here.
`val liveReplicas = assignment.filter(replica =>
controllerContext.isReplicaOnline(replica, partition))`
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