Shoothzj opened a new issue #12239: URL: https://github.com/apache/pulsar/issues/12239
**Describe the bug** Concurrent request `delete subscription` A and `delete topic` B will lead to leak `ManagerLedgerImpl`、`ManagerCursorImpl`、and any object related to them leak. That's the work flow ### Step1 A delete the cursor `ledger.asyncDeleteCursor`, but don't remove the `subscription` from `ConcurrentOpenHashMap<String, PersistentSubscription> subscriptions;` ### Step2 Second, B delete the topic, as long as the `subscription` in `subscriptions`, B try to delete the cursor. Because of the `cursor` already been delete in `Step1`, delete topic failed ### Step3 A remove the `subscrption` from `subscriptions` That lead to memory leak, can't free `ManagerLedgerImpl`、`ManagerCursorImpl`、and any object related to them. -- 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]
