dill21yu opened a new issue, #18025: URL: https://github.com/apache/dolphinscheduler/issues/18025
### Search before asking - [x] I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no similar issues. ### What happened The `graphHasCycle()` method in the API layer only detects cycles within a single workflow, but fails to detect cross-workflow circular dependencies. <img width="1194" height="690" alt="Image" src="https://github.com/user-attachments/assets/9a532e75-27f1-4a0d-96e3-2f2b73a72a54"; /> ### What you expected to happen When creating or updating a workflow, the system should: 1. Query the `workflow_task_lineage` table to get all cross-workflow dependencies 2. Build a complete DAG graph including both internal and external dependencies 3. Detect circular dependencies using DFS before saving 4. Return a clear error message to the user indicating which workflows/tasks form the cycle ### How to reproduce Query the `workflow_task_lineage` table and use DFS recursive detection to identify cross-workflow circular dependencies. ### Anything else _No response_ ### Version dev ### Are you willing to submit PR? - [x] Yes I am willing to submit a PR! ### Code of Conduct - [x] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- 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]
