cmccabe commented on code in PR #19586:
URL: https://github.com/apache/kafka/pull/19586#discussion_r2082051224
##########
metadata/src/main/java/org/apache/kafka/controller/metrics/ControllerMetadataMetrics.java:
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@@ -63,6 +74,8 @@ public final class ControllerMetadataMetrics implements
AutoCloseable {
private final Optional<MetricsRegistry> registry;
private final AtomicInteger fencedBrokerCount = new AtomicInteger(0);
private final AtomicInteger activeBrokerCount = new AtomicInteger(0);
+ private final AtomicInteger controllerShutdownBrokerCount = new
AtomicInteger(0);
+ private final Map<Integer, AtomicInteger> brokerRegistrationStates = new
ConcurrentHashMap<>();
Review Comment:
we need to remove these entries when a broker is removed.
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