jdfrozen opened a new issue, #20099: URL: https://github.com/apache/pulsar/issues/20099
### Search before asking - [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar. ### Version 2.7.5、2.8.4、master ### Minimal reproduce step 1. Run the code for 20 minutes public static void main(String[] args) { String url = "pulsar://10.98.242.210:6650"; String t = "persistent://components/test/test_deliver"; new Thread(() -> { try { PulsarClient client = PulsarClient.builder() .serviceUrl(url) .ioThreads(1) .listenerThreads(2) .build(); Producer<String> producerA = client.newProducer(Schema.STRING) .topic(t) .producerName("test") .create(); Random random = new Random(); while (true) { String message = String.valueOf(System.currentTimeMillis()); producerA.newMessage(Schema.STRING).value(message).deliverAfter(random.nextInt(30), TimeUnit.MINUTES).send(); Thread.sleep(10L); } } catch (Exception e) { e.printStackTrace(); } }).start(); Set<String> stringSet = new ConcurrentHashSet<>(); try { PulsarClient client = PulsarClient.builder() .serviceUrl(url) .ioThreads(1) .listenerThreads(2) .build(); Consumer consumer = client.newConsumer(Schema.STRING) .topic(t) .subscriptionName("frozen") .subscriptionType(SubscriptionType.Shared) .subscribe(); while (true) { Message<String> message = consumer.receive(); if (stringSet.contains(message.getValue())) { log.info("duplicate messages thread={} message={}", Thread.currentThread().getName(), message.getValue()); } else { stringSet.add(message.getValue()); } consumer.acknowledge(message); } } catch (Exception e) { e.printStackTrace(); } } 2. After 20 minutes, execute unload cmd: bin/pulsar-admin topics unload persistent://components/test/test_deliver 3. See consumer log,duplicate messages ### What did you expect to see? no duplicate messages ### What did you see instead? duplicate messages ### Anything else? _No response_ ### Are you willing to submit a PR? - [ ] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@pulsar.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
