C0urante commented on code in PR #12543:
URL: https://github.com/apache/kafka/pull/12543#discussion_r958619212
##########
core/src/test/scala/unit/kafka/controller/ControllerIntegrationTest.scala:
##########
@@ -490,6 +490,41 @@ class ControllerIntegrationTest extends QuorumTestHarness {
"failed to get expected partition state upon broker startup")
}
+ @Test
+ def testAutoPreferredReplicaLeaderElectionWithReassigningPartitions(): Unit
= {
+ servers = makeServers(3, autoLeaderRebalanceEnable = true)
+ val controllerId = TestUtils.waitUntilControllerElected(zkClient)
+ val leaderBrokerId = servers.map(_.config.brokerId).filter(_ !=
controllerId).head
+ val otherBrokerId = servers.map(_.config.brokerId).filter(e => e !=
controllerId && e != leaderBrokerId).head
+ val tp = new TopicPartition("t", 0)
+ val assignment = Map(tp.partition -> Seq(leaderBrokerId, controllerId))
+ TestUtils.createTopic(zkClient, tp.topic, partitionReplicaAssignment =
assignment, servers = servers)
+ val reassigningTp = new TopicPartition("reassigning", 0)
+ val reassigningTpAssignment = Map(reassigningTp.partition ->
Seq(controllerId))
+
+ TestUtils.createTopic(zkClient, reassigningTp.topic,
partitionReplicaAssignment = reassigningTpAssignment, servers = servers)
+ servers(leaderBrokerId).shutdown()
+ servers(leaderBrokerId).awaitShutdown()
+
+ servers(otherBrokerId).shutdown()
+ servers(otherBrokerId).awaitShutdown()
+ waitForPartitionState(tp, firstControllerEpoch, controllerId,
LeaderAndIsr.InitialLeaderEpoch + 1,
+ "failed to get expected partition state upon broker shutdown")
+
+ val reassignment = Map(reassigningTp ->
ReplicaAssignment(Seq(otherBrokerId), List(), List()))
+ zkClient.createPartitionReassignment(reassignment.map { case (k, v) => k
-> v.replicas })
Review Comment:
Can this be simplified? Don't think we need to construct an entire
`ReplicaAssignment` here:
```suggestion
val reassignment = Map(reassigningTp -> Seq(otherBrokerId))
zkClient.createPartitionReassignment(reassignment)
```
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