splett2 commented on code in PR #15702:
URL: https://github.com/apache/kafka/pull/15702#discussion_r1568044239
##########
metadata/src/main/java/org/apache/kafka/controller/QuorumController.java:
##########
@@ -2360,4 +2363,9 @@ void setNewNextWriteOffset(long newNextWriteOffset) {
void handleUncleanBrokerShutdown(int brokerId, List<ApiMessageAndVersion>
records) {
replicationControl.handleBrokerUncleanShutdown(brokerId, records);
}
+
+ void maybeTriggerMinIsrConfigUpdate(Optional<String> topicName) throws
InterruptedException, ExecutionException {
+ appendWriteEvent("partitionUpdateForMinIsrChange",
OptionalLong.empty(),
+ () ->
replicationControl.getPartitionElrUpdatesForConfigChanges(topicName)).get();
+ }
Review Comment:
hmm, I think a better way to think about it is that we want to append the
min ISR config update atomically with the partition change records. Only
appending the partition change records once the config change is replayed is
difficult to reason about and possibly incorrect.
Perhaps one example to look at is
`ReplicationControlManager.handleBrokerFenced`. When a broker is fenced, we
generate a broker registration change record along with the leaderAndIsr
partition change records. I assume we want to follow a similar model with the
topic configuration change events.
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