cmccabe commented on code in PR #12776:
URL: https://github.com/apache/kafka/pull/12776#discussion_r1011288444


##########
core/src/test/java/kafka/testkit/KafkaClusterTestKit.java:
##########
@@ -191,21 +191,36 @@ public KafkaClusterTestKit build() throws Exception {
                     KafkaRaftManager<ApiMessageAndVersion> raftManager = new 
KafkaRaftManager<>(
                         metaProperties, config, new MetadataRecordSerde(), 
metadataPartition, KafkaRaftServer.MetadataTopicId(),
                         Time.SYSTEM, new Metrics(), 
Option.apply(threadNamePrefix), connectFutureManager.future);
-                    ControllerServer controller = new ControllerServer(
-                        nodes.controllerProperties(node.id()),
-                        config,
-                        raftManager,
-                        Time.SYSTEM,
-                        new Metrics(),
-                        new MockControllerMetrics(),
-                        Option.apply(threadNamePrefix),
-                        connectFutureManager.future,
-                        KafkaRaftServer.configSchema(),
-                        raftManager.apiVersions(),
-                        bootstrapMetadata,
-                        metadataFaultHandler,
-                        fatalFaultHandler
-                    );
+                    MetadataLoader metadataLoader = null;
+                    ControllerServer controller = null;
+                    try {
+                        metadataLoader = new MetadataLoader.Builder().
+                                setNodeId(node.id()).
+                                setTime(Time.SYSTEM).
+                                setThreadNamePrefix(threadNamePrefix).
+                                setFaultHandler(fatalFaultHandler).
+                                build();
+                        controller = new ControllerServer(
+                                nodes.controllerProperties(node.id()),
+                                config,
+                                raftManager,
+                                Time.SYSTEM,
+                                new Metrics(),
+                                new MockControllerMetrics(),
+                                Option.apply(threadNamePrefix),
+                                connectFutureManager.future,
+                                KafkaRaftServer.configSchema(),
+                                raftManager.apiVersions(),
+                                bootstrapMetadata,
+                                metadataFaultHandler,
+                                fatalFaultHandler,
+                                metadataLoader);
+                    } catch (Throwable e) {
+                        log.error("Error creating controller {}", node.id(), 
e);
+                        metadataLoader.close();
+                        controller.shutdown();

Review Comment:
   good catch



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