zhangyuewen12 opened a new issue, #18292: URL: https://github.com/apache/dolphinscheduler/issues/18292
### 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 When using the JDBC registry , stale EPHEMERAL registry data may be removed from the database without correctly notifying running services. This can cause running Master instances to keep stale in-memory registry state. ### What you expected to happen <img width="1423" height="940" alt="Image" src="https://github.com/user-attachments/assets/ee4c4441-004c-4d0e-ac82-5dfe67b6f8a8"; /> <img width="1408" height="886" alt="Image" src="https://github.com/user-attachments/assets/52a74d2a-cd9d-434f-a28c-bdb6c4d4d427"; /> <img width="1509" height="819" alt="Image" src="https://github.com/user-attachments/assets/f1f913ea-ff60-4e0d-8010-2cce2f0b72ec"; /> ### How to reproduce Use JDBC registry. 1.Start a Master or Alert Server instance with address A. 2.Start a replacement instance with address B before address A is considered expired. 3.Stop or kill the old instance A. 4.Wait for JDBC registry cleanup. For Master: Check DB and confirm only one Master registry data row exists: select * from t_ds_jdbc_registry_data where data_key like '%/nodes/master/%'; Debug or log MasterSlotManager and observe: currentSlotIndex = 0 totalSlot = 2 Check t_ds_command and observe commands that never get fetched because they belong to the missing slot. ### Anything else _No response_ ### Version 3.4.1 ### 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]
