dengziming commented on code in PR #12195:
URL: https://github.com/apache/kafka/pull/12195#discussion_r883213806
##########
metadata/src/main/java/org/apache/kafka/controller/ClusterControlManager.java:
##########
@@ -391,41 +393,60 @@ public void replay(UnregisterBrokerRecord record) {
}
public void replay(FenceBrokerRecord record) {
- int brokerId = record.id();
- BrokerRegistration registration = brokerRegistrations.get(brokerId);
- if (registration == null) {
- throw new RuntimeException(String.format("Unable to replay %s: no
broker " +
- "registration found for that id", record.toString()));
- } else if (registration.epoch() != record.epoch()) {
- throw new RuntimeException(String.format("Unable to replay %s: no
broker " +
- "registration with that epoch found", record.toString()));
- } else {
- if (heartbeatManager != null) heartbeatManager.register(brokerId,
true);
- brokerRegistrations.put(brokerId,
registration.cloneWithFencing(true));
- updateMetrics(registration, brokerRegistrations.get(brokerId));
- log.info("Fenced broker: {}", record);
- }
+ replayRegistrationChange(record, record.id(), record.epoch(),
Optional.of(true));
}
public void replay(UnfenceBrokerRecord record) {
- int brokerId = record.id();
- BrokerRegistration registration = brokerRegistrations.get(brokerId);
- if (registration == null) {
+ replayRegistrationChange(record, record.id(), record.epoch(),
Optional.of(false));
+ }
+
+ public void replay(BrokerRegistrationChangeRecord record) {
+ replayRegistrationChange(record, record.brokerId(),
record.brokerEpoch(), getFencingChange(record.fenced()));
+ }
+
+ private Optional<Boolean> getFencingChange(byte value) {
+ switch (value) {
+ case -1:
+ return Optional.of(false);
+ case 0:
+ return Optional.empty();
+ case 1:
+ return Optional.of(true);
+ default:
+ throw new RuntimeException(String.format("Invalid value for
fenced: %d", value));
+ }
+ }
+
+ private void replayRegistrationChange(
+ ApiMessage record,
+ int brokerId,
+ long brokerEpoch,
+ Optional<Boolean> fenced
+ ) {
+ BrokerRegistration curRegistration = brokerRegistrations.get(brokerId);
+ if (curRegistration == null) {
throw new RuntimeException(String.format("Unable to replay %s: no
broker " +
"registration found for that id", record.toString()));
- } else if (registration.epoch() != record.epoch()) {
+ } else if (curRegistration.epoch() != brokerEpoch) {
throw new RuntimeException(String.format("Unable to replay %s: no
broker " +
"registration with that epoch found", record.toString()));
} else {
- if (heartbeatManager != null) heartbeatManager.register(brokerId,
false);
- brokerRegistrations.put(brokerId,
registration.cloneWithFencing(false));
- updateMetrics(registration, brokerRegistrations.get(brokerId));
- log.info("Unfenced broker: {}", record);
- }
- if (readyBrokersFuture.isPresent()) {
- if (readyBrokersFuture.get().check()) {
- readyBrokersFuture.get().future.complete(null);
- readyBrokersFuture = Optional.empty();
+ BrokerRegistration nextRegistration = curRegistration;
+ if (fenced.isPresent()) {
+ nextRegistration =
nextRegistration.cloneWithFencing(fenced.get());
+ }
+ if (!curRegistration.equals(nextRegistration)) {
+ brokerRegistrations.put(brokerId, nextRegistration);
+ updateMetrics(curRegistration, nextRegistration);
+ } else {
+ log.info("Ignoring no-op registration change for {}",
curRegistration);
+ }
+ if (heartbeatManager != null) heartbeatManager.register(brokerId,
nextRegistration.fenced());
Review Comment:
it seems `heartbeatManager` will be null in a standby controller.
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