sb-abhish3k opened a new pull request, #14171: URL: https://github.com/apache/cloudstack/pull/14171
### Description MessageBusBase: replaced exclusive Gate with ReadWriteLock so multiple publishers can run in parallel. Subscriber callbacks are now invoked outside the lock to prevent slow hypervisor callbacks from starving write lock holders (subscribe/unsubscribe). Under heavy reconnect load (pod restart with many hosts) the old design serialized all publish() callers through a single gate, blocking API threads and causing full management server unresponsiveness. DirectAgentAttache: fixed a race where PingTask could be scheduled after disconnect() had already cleared _futures, causing it to never be cancelled. Switched PingTask scheduling from scheduleAtFixedRate to scheduleWithFixedDelay so slow hypervisor responses do not pile up concurrent ping executions and exhaust the cron thread pool. ### Types of changes - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] New feature (non-breaking change which adds functionality) - [x] Bug fix (non-breaking change which fixes an issue) - [ ] Enhancement (improves an existing feature and functionality) - [ ] Cleanup (Code refactoring and cleanup, that may add test cases) - [ ] Build/CI - [ ] Test (unit or integration test code) ### Feature/Enhancement Scale or Bug Severity #### Feature/Enhancement Scale - [ ] Major - [ ] Minor #### Bug Severity - [ ] BLOCKER - [ ] Critical - [ ] Major - [ ] Minor - [ ] Trivial ### Screenshots (if appropriate): ### How Has This Been Tested? <!-- Please describe in detail how you tested your changes. --> <!-- Include details of your testing environment, and the tests you ran to --> #### How did you try to break this feature and the system with this change? <!-- see how your change affects other areas of the code, etc. --> <!-- Please read the [CONTRIBUTING](https://github.com/apache/cloudstack/blob/main/CONTRIBUTING.md) document --> -- 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]
