lbradstreet commented on a change in pull request #9022:
URL: https://github.com/apache/kafka/pull/9022#discussion_r454587462



##########
File path: 
core/src/test/scala/unit/kafka/admin/TopicCommandWithAdminClientTest.scala
##########
@@ -672,11 +677,9 @@ class TopicCommandWithAdminClientTest extends 
KafkaServerTestHarness with Loggin
     adminClient.createTopics(
       Collections.singletonList(new NewTopic(testTopicName, partitions, 
replicationFactor).configs(configMap))).all().get()
     waitForTopicCreated(testTopicName)
-    TestUtils.generateAndProduceMessages(servers, testTopicName, numMessages = 
10, acks = -1)
+    TestUtils.generateAndProduceMessages(servers, testTopicName, numMessages = 
1000, acks = -1)
 
     val brokerIds = servers.map(_.config.brokerId)
-    TestUtils.setReplicationThrottleForPartitions(adminClient, brokerIds, 
Set(tp), throttleBytes = 1)

Review comment:
       Why did we remove this? We still need the throttle to be set so that the 
replica doesn't join the ISR. It could easily do this even if it only fetches a 
message at a time. The idea with the new replica fetch max bytes setting is to 
give the broker a chance to throttle itself before joining the ISR.




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