hachikuji commented on code in PR #12736:
URL: https://github.com/apache/kafka/pull/12736#discussion_r993756766
##########
metadata/src/main/java/org/apache/kafka/controller/BrokerHeartbeatManager.java:
##########
@@ -414,7 +420,9 @@ void updateControlledShutdownOffset(int brokerId, long
controlledShutDownOffset)
throw new RuntimeException("Fenced brokers cannot enter controlled
shutdown.");
}
active.remove(broker);
- broker.controlledShutDownOffset = controlledShutDownOffset;
+ if (broker.controlledShutDownOffset < 0) {
+ broker.controlledShutDownOffset = controlledShutDownOffset;
+ }
log.debug("Updated the controlled shutdown offset for broker {} to
{}.",
Review Comment:
This log message is misleading if we don't update the offset.
##########
metadata/src/main/java/org/apache/kafka/controller/BrokerHeartbeatManager.java:
##########
@@ -275,6 +275,12 @@ Collection<BrokerHeartbeatState> brokers() {
return brokers.values();
}
+ // VisibleForTesting
+ long getControlledShutDownOffset(int brokerId) {
+ return brokers.get(brokerId).controlledShutDownOffset;
+ }
+
+
Review Comment:
In the javadoc for this class, we mention that controlled shutdown is "soft
state." This is no longer strictly true following KIP-841. Perhaps we could
update the doc?
##########
metadata/src/main/java/org/apache/kafka/controller/BrokerHeartbeatManager.java:
##########
@@ -275,6 +275,12 @@ Collection<BrokerHeartbeatState> brokers() {
return brokers.values();
}
+ // VisibleForTesting
+ long getControlledShutDownOffset(int brokerId) {
Review Comment:
nit: usually we drop the `get` prefix, so just `controlledShutdownOffset`.
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