pvillard31 opened a new pull request, #11684: URL: https://github.com/apache/nifi/pull/11684
# Summary NIFI-16351 - Prevent Flow Registry synchronization failures during startup validation Flow Registry synchronization can run while a restored Flow Registry Client is still `VALIDATING`. During startup, client validation cannot begin until flow initialization completes, but version-controlled process groups submit synchronization tasks while the flow is still being restored. When restoration takes longer than the existing 10-second validation wait, synchronization records a misleading flow-retrieval failure. Recovery then depends on the delayed periodic synchronization task. This change: - Treats `VALIDATING` as a transient condition without replacing the current synchronization status. - Handles `INVALID` as a durable validation-specific failure. - Applies validation-state handling before both registry access paths. - Includes the underlying exception message in snapshot-retrieval failures. - Submits one Flow Registry synchronization pass after initial validation and after releasing the `FlowController` write lock. - Reuses the same `RegistryFlowSynchronizationTask` used for periodic synchronization, preserving per-client grouping and interval tracking. - Leaves the existing 300-second periodic initial delay and configured synchronization interval unchanged. # Tracking Please complete the following tracking steps prior to pull request creation. ### Issue Tracking - [Apache NiFi Jira](https://issues.apache.org/jira/browse/NIFI) issue created ### Pull Request Tracking - Pull Request title starts with Apache NiFi Jira issue number, such as `NIFI-00000` - Pull Request commit message starts with Apache NiFi Jira issue number, as such `NIFI-00000` - Pull request contains [commits signed](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits) with a registered key indicating `Verified` status ### Pull Request Formatting - Pull Request based on current revision of the `main` branch - Pull Request refers to a feature branch with one commit containing changes # Verification Please indicate the verification steps performed prior to pull request creation. ### Build - [ ] Build completed using `./mvnw clean install -P contrib-check` - [ ] JDK 21 - [ ] JDK 25 ### Licensing - [ ] New dependencies are compatible with the [Apache License 2.0](https://apache.org/licenses/LICENSE-2.0) according to the [License Policy](https://www.apache.org/legal/resolved.html) - [ ] New dependencies are documented in applicable `LICENSE` and `NOTICE` files ### Documentation - [ ] Documentation formatting appears as expected in rendered files -- 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]
