[NIFI-7231] NiFi fails to start due to blocking controller service validation

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.10.0
• Fix Version/s: 1.12.0, 1.11.4
• Component/s: Core Framework
• Assignee: Mark Bean
• Reporter: Mark Bean
• Created: 06/Mar/20 13:28
• Updated: 09/Mar/20 18:44
• Resolved: 06/Mar/20 20:03

Description

NiFi will not enable all controller services during startup when there are additional referenced controller services within a controller service. Specifically, this was observed when the referenced controller services were dynamic properties.
The enabling process correctly enables referenced services first. However, during the enabling process, all referencing components are validated. This creates a situation where the parent controller service is repeatedly validated for every child controller service. And, part of the validation of the parent is to validate the child. The circular validation will eventually block; controller services are not properly enabled; NiFi does not complete the startup process.

Issue Links

• links to: GitHub Pull Request #4118