dengziming commented on code in PR #11681:
URL: https://github.com/apache/kafka/pull/11681#discussion_r845640296
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core/src/test/java/kafka/testkit/KafkaClusterTestKit.java:
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@@ -373,13 +373,19 @@ public void startup() throws ExecutionException,
InterruptedException {
/**
* Wait for a controller to mark all the brokers as ready (registered and
unfenced).
+ * And also wait for the metadata cache up-to-date in each broker server.
*/
public void waitForReadyBrokers() throws ExecutionException,
InterruptedException {
// We can choose any controller, not just the active controller.
// If we choose a standby controller, we will wait slightly longer.
ControllerServer controllerServer =
controllers.values().iterator().next();
Review Comment:
It seems we no longer have to call `controller.waitForReadyBrokers()` if we
will wait for metadataCache to catch up.
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