lhotari opened a new pull request, #24700: URL: https://github.com/apache/pulsar/pull/24700
Fixes #23845 Fixes #24490 ### Motivation There a race condition in `PersistentDispatcherMultipleConsumers` where reading more entries might get skipped or delayed when there's a send in progress and new permits get added. The race condition is explained in https://github.com/apache/pulsar/issues/23845#issuecomment-2599470326. Besides causing consuming to get stuck, the race condition could also cause latency delays and could be contributing to #24490. ### Modifications - add a flag `moreEntriesRequestedWhileSendInProgress` for detecting and resolving the race condition - the flag is set when `readMoreEntries` gets blocked by `sendInProgress` - if the flag is set, `handleSendingMessagesAndReadingMore` will always result in calling `readMoreEntries` ### Documentation <!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. --> - [ ] `doc` <!-- Your PR contains doc changes. --> - [ ] `doc-required` <!-- Your PR changes impact docs and you will update later --> - [x] `doc-not-needed` <!-- Your PR changes do not impact docs --> - [ ] `doc-complete` <!-- Docs have been already added --> -- 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]
