[FELIX-5242] Configuration updates may be missed when the component is restarting

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: org.apache.felix.dependencymanager-r1
• Fix Version/s: org.apache.felix.dependencymanager-r9
• Component/s: Dependency Manager
• Assignee: Pierre De Rop
• Reporter: Pierre De Rop
• Created: 26/Apr/16 20:52
• Updated: 26/Apr/16 21:10
• Resolved: 26/Apr/16 21:10

Description

When a component has some required dependencies, and also has a configuration dependency, then some configuration updates may be missed in the following situation:

1) the component has lost a required dependency: it is stopped.
2) the component is restarting because the lost required dependency becomes available again.
3) at the same time, concurrently, a configuration update is taking place.

Then, during this racy condition, it is possible (but not systematically) that the component misses the configuration update.

I have a test which demontrates this issue, as well as a patch. I will commit it soon.