rhauch opened a new pull request #8536: URL: https://github.com/apache/kafka/pull/8536
When the Connect worker forwards a REST API request to the leader, it might get back a `RequestTargetException` that suggests the worker should forward the request to a different worker. This can happen when the leader changes, and the worker that receives the original request forwards the request to the worker that it thinks is the current leader, but that worker is not the current leader. In this case. In most cases, the worker that received the forwarded request includes the URL of the current leader, but it is possible (albeit rare) that the worker doesn’t know the current leader and will include a null leader URL in the resulting `RequestTargetException`. When this rare case happens, the user gets a null pointer exception in their response and the NPE is logged. Instead, the worker should catch this condition and provide a more useful error message that is similar to other existing error messages that might occur. Added a unit test that verifies this corner case is caught and this particular NPE does not occur. ### Committer Checklist (excluded from commit message) - [ ] Verify design and implementation - [ ] Verify test coverage and CI build status - [ ] Verify documentation (including upgrade notes) ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
