jim0987795064 commented on code in PR #20068:
URL: https://github.com/apache/kafka/pull/20068#discussion_r2187469009


##########
core/src/test/scala/integration/kafka/api/PlaintextAdminIntegrationTest.scala:
##########
@@ -2873,23 +2873,41 @@ class PlaintextAdminIntegrationTest extends 
BaseAdminIntegrationTest {
     /** Changes the <i>preferred</i> leader without changing the 
<i>current</i> leader. */
     def changePreferredLeader(newAssignment: Seq[Int]): Unit = {
       val preferred = newAssignment.head
-      val prior1 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition1.topic, 
partition1.partition(), listenerName).get.id()
-      val prior2 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition2.topic, 
partition2.partition(), listenerName).get.id()
-
-      var m = Map.empty[TopicPartition, Optional[NewPartitionReassignment]]
-      if (prior1 != preferred)
-        m += partition1 -> Optional.of(new 
NewPartitionReassignment(newAssignment.map(Int.box).asJava))
-      if (prior2 != preferred)
-        m += partition2 -> Optional.of(new 
NewPartitionReassignment(newAssignment.map(Int.box).asJava))
-      client.alterPartitionReassignments(m.asJava).all().get()
+      var prior1 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition1.topic, 
partition1.partition(), listenerName).get.id()
+      var prior2 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition2.topic, 
partition2.partition(), listenerName).get.id()
 
       TestUtils.waitUntilTrue(
-        () => preferredLeader(partition1) == preferred && 
preferredLeader(partition2) == preferred,
+        () => {
+          prior1 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition1.topic, 
partition1.partition(), listenerName).get.id()
+          prior2 = 
brokers.head.metadataCache.getPartitionLeaderEndpoint(partition2.topic, 
partition2.partition(), listenerName).get.id()
+          var m = Map.empty[TopicPartition, Optional[NewPartitionReassignment]]

Review Comment:
   Hello @frankvicky,  
   I've already addressed this issue
   Thanks for pointing it out! 
   



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