lhotari commented on code in PR #24920:
URL: https://github.com/apache/pulsar/pull/24920#discussion_r2486109532


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/AbstractDispatcherSingleActiveConsumer.java:
##########
@@ -225,6 +226,25 @@ public synchronized CompletableFuture<Void> 
addConsumer(Consumer consumer) {
         return CompletableFuture.completedFuture(null);
     }
 
+    /**
+     * This method is used to help debugging addConsumer failed for exclusive 
subscription.
+     * @param actConsumer
+     * @param consumer
+     * @return
+     */
+    private synchronized CompletableFuture<Void> internalAddConsumer(Consumer 
actConsumer, Consumer consumer) {
+        addConsumerFailedAttemptCount++;
+        if (addConsumerFailedAttemptCount >= 5) {
+            log.warn("Added consumer failed with attempt count {}, consumers: 
{}, active consumer: {},"
+                            + "active state : {}",
+                    addConsumerFailedAttemptCount, consumers, actConsumer, 
actConsumer.cnx().isActive());
+            addConsumerFailedAttemptCount = 0;

Review Comment:
   Add code to reset the counter also when the consumer has been successfully 
added



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