[KARAF-4272] Karaf freezes when a circular dependency is introduced where a feature references itself over a chain of other features

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.4
• Fix Version/s: 4.1.0
• Component/s: karaf
• Assignee: Guillaume Nodet
• Reporter: Roland Hauser
• Created: 14/Jan/16 17:43
• Updated: 14/Sep/18 15:14
• Resolved: 20/Oct/16 20:21

Description

Karaf freezes when a circular dependency is introduced where a features references itself over a chain of other features

I did some experiments with circular dependencies where a feature references itself indirectly over some other features. In this case it does not matter if attribute prerequisite is set or not. After command feature:install c-references-a Karaf freezes and must be restarted.

I would expect, that the feature:install command fails with an error message like this:

"Feature com.foo.bar could not be installed because a circular reference:
a-references-b
b-references-c
c-references-a"

You can checkout a project which helps to reproduce the case from https://github.com/SourcePond/reproduce-feature-circular-dependency.git (Maven-Modules c-references-a and c-references-a-prerequisite-true). Simply install the root-project to have all necessary Maven dependencies.

Issue Links

• is related to: KARAF-4271 Circular dependency not handled properly when a feature references itself directly