I have 2 osgi bundles (say A and B) running in Jboss Fuse. I am using Felix. 'A' bundle exposes a service which 'B' bundle uses. When I deploy both these bundles there is no problem. When I execute osgi:ls -u, I see that bundle 'B' is using service exposed by bundle 'A'

After I restart these 2 bundles together Bundle 'B' cannot find service exposed by Bundle 'A'. At this stage if I execute command osgi:ls, I see OSGI service exposed by bundle 'A'. When I execute osgi:ls -u, I don't see that bundle 'B' is using service exposed by bundle 'A'

I got 2 workaround for this problem

1. At this stage if I restart only bundle 'B', then bundle 'B' finds OSGI service exposed by Bundle 'A'. Restarting bundle is not obvious official solution
2. In bundle 'B', while importing osgi service, if add cardinality as 0:1 then I don't find any issue. But I cant do this as service exposed by bundle 'A' is mandatory for some functionality in bundle 'B'

Can anyone tell me why I am observing this behavior and how I can resolve it ? ?