codelipenghui commented on issue #21009: URL: https://github.com/apache/pulsar/issues/21009#issuecomment-1681965002
@Inbasasi Without transactions, the shared subscription on a persistent topic can only provide the at-least-once semantic. You can try to check the broker logs, to see if there are other consumers disconnected or if the topic has been unloaded to another broker. Actually, there are many cases to introduce the duplicated messages, then we introduced the [transactions](https://github.com/apache/pulsar/wiki/PIP-31%3A-Transaction-Support) to support exactly-once semantic. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
