Kashif Faraz 64e6283eca
Do not allow retention rules to be null (#14223)
Changes:
- Do not allow retention rules for any datasource or cluster to be null
- Allow empty rules at the datasource level but not at the cluster level
- Add validation to ensure that `druid.manager.rules.defaultRule` is always set correctly
- Minor style refactors
2023-05-11 14:33:56 +05:30
..