lhotari opened a new issue, #23261: URL: https://github.com/apache/pulsar/issues/23261
### Search before asking - [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar. ### Read release policy - [X] I understand that unsupported versions don't get bug fixes. I will attempt to reproduce the issue on a supported version of Pulsar client and Pulsar broker. ### Version any released version, master branch ### Minimal reproduce step This was found when analysing the source code, so no reproducer yet. A test application that consumes and acks messages while a topic is being frequently unloaded will reproduce this issue. ### What did you expect to see? When ack receipt is enabled, the broker should respond with a failure when it discards an ack. ### What did you see instead? When the consumer isn't found, it's silently discarded. There's debug logging, but no ack receipt response logic to respond with an error: https://github.com/apache/pulsar/blob/6c300f515dbf245620b14a844d9ff6215426e992/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java#L1982-L1988 and https://github.com/apache/pulsar/blob/6c300f515dbf245620b14a844d9ff6215426e992/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java#L1952-L1960 ### 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
