cmccabe commented on a change in pull request #11606:
URL: https://github.com/apache/kafka/pull/11606#discussion_r781651142



##########
File path: 
core/src/test/scala/unit/kafka/integration/KafkaServerTestHarness.scala
##########
@@ -253,4 +248,32 @@ abstract class KafkaServerTestHarness extends 
QuorumTestHarness {
     getController().kafkaController.controllerContext.topicNames.toMap
   }
 
+  private def createBrokers(startup: Boolean): Unit = {
+    // Add each broker to `servers` buffer as soon as it is created to ensure 
that brokers
+    // are shutdown cleanly in tearDown even if a subsequent broker fails to 
start
+    for (config <- configs) {
+      val broker = createBrokerFromConfig(config)
+      _brokers += broker
+      if (startup) {
+        broker.startup()

Review comment:
       It seems like we should be setting the `alive` boolean to true here, 
rather than later on, right? Otherwise this might get out of sync if we get an 
exception later on.




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