...

Non-snapshot artifacts will be immutable. Advanced users can delete an existing artifact, but the assumption will be that they know exactly what they are doing. Deleting an artifact may cause programs that are using it to fail.

7. CDAP Upgrade

The programmatic API changes are all backwards compatible, so existing apps will not need to be recompiled. They will, however, need to be added to the artifact repository.

Any existing adapters will need to be migrated. Ideally, the upgrade tool will create matching applications based on the adapter conf, but at a minimum we will simply delete existing adapters and templates.

RESTful API changes

Application APIs

...