massakam commented on a change in pull request #8561:
URL: https://github.com/apache/pulsar/pull/8561#discussion_r524846319
##########
File path:
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
##########
@@ -2384,6 +2387,40 @@ public boolean isSystemTopic() {
return false;
}
+ private synchronized void fence() {
+ isFenced = true;
+ ScheduledFuture<?> monitoringTask = this.fencedTopicMonitoringTask;
+ if (monitoringTask == null || monitoringTask.isDone()) {
+ final int timeout =
brokerService.pulsar().getConfiguration().getTopicFencingTimeoutSeconds();
+ if (timeout > 0) {
+ this.fencedTopicMonitoringTask =
brokerService.executor().schedule(this::closeFencedTopicForcefully,
+ timeout, TimeUnit.SECONDS);
+ }
+ }
+ }
+
+ private synchronized void unfence() {
+ isFenced = false;
+ ScheduledFuture<?> monitoringTask = this.fencedTopicMonitoringTask;
+ if (monitoringTask != null && !monitoringTask.isDone()) {
+ monitoringTask.cancel(false);
+ }
+ }
+
+ private synchronized void closeFencedTopicForcefully() {
+ if (isFenced) {
+ final int timeout =
brokerService.pulsar().getConfiguration().getTopicFencingTimeoutSeconds();
+ if (isClosingOrDeleting) {
+ log.warn("[{}] Topic remained fenced for {} seconds and is
already closed (pendingWriteOps: {})", topic,
+ timeout, pendingWriteOps.get());
+ } else {
+ log.error("[{}] Topic remained fenced for {} seconds, so close
it (pendingWriteOps: {})", topic,
+ timeout, pendingWriteOps.get());
+ close();
Review comment:
I removed "synchronized" because there was no clear reason to make this
method synchronized.
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