eolivelli commented on code in PR #16812:
URL: https://github.com/apache/pulsar/pull/16812#discussion_r930848103
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentDispatcherMultipleConsumers.java:
##########
@@ -528,26 +533,38 @@ public synchronized void readEntriesComplete(List<Entry>
entries, Object ctx) {
log.debug("[{}] Distributing {} messages to {} consumers", name,
entries.size(), consumerList.size());
}
+ // dispatch messages to a separate thread, but still in order for this
subscription
+ // sendMessagesToConsumers is responsible for running broker-side
filters
+ // that may be quite expensive
if (serviceConfig.isDispatcherDispatchMessagesInSubscriptionThread()) {
- // dispatch messages to a separate thread, but still in order for
this subscription
- // sendMessagesToConsumers is responsible for running broker-side
filters
- // that may be quite expensive
+ // setting sendInProgress here, because sendMessagesToConsumers
will be executed
+ // in a separate thread, and we want to prevent more reads
+ sendInProgress = true;
dispatchMessagesThread.execute(safeRun(() ->
sendMessagesToConsumers(readType, entries)));
} else {
sendMessagesToConsumers(readType, entries);
}
}
protected synchronized void sendMessagesToConsumers(ReadType readType,
List<Entry> entries) {
+ sendInProgress = true;
+ try {
+ trySendMessagesToConsumers(readType, entries);
+ } finally {
+ sendInProgress = false;
+ }
+ readMoreEntries();
+ }
+ protected synchronized void trySendMessagesToConsumers(ReadType readType,
List<Entry> entries) {
Review Comment:
you are right, thanks for the heads up
I will also add a comment for future people who will put their hands here
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