eolivelli commented on a change in pull request #9275:
URL: https://github.com/apache/pulsar/pull/9275#discussion_r563795240



##########
File path: 
pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/WorkerUtils.java
##########
@@ -343,4 +349,47 @@ public static boolean 
isFunctionCodeBuiltin(Function.FunctionDetailsOrBuilder fu
                 .startMessageId(startMessageId)
                 .create();
     }
+
+    public static Producer<byte[]> 
createExclusiveProducerWithRetry(PulsarClient client,
+                                                                    String 
topic,
+                                                                    String 
producerName) {
+        Actions.Action createProducerAction = Actions.Action.builder()
+                .actionName(String.format("Creating exclusive producer for 
topic %s", topic))
+                .numRetries(5)
+                .sleepBetweenInvocationsMs(10000)
+                .supplier(() -> {
+                    try {
+                        Producer<byte[]> producer = 
client.newProducer().topic(topic)
+                                .accessMode(ProducerAccessMode.Exclusive)

Review comment:
       I agree with @jerrypeng 




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