If there's something simple that can be done to make this go away it would be nice.

INFO  [io.jaegertracing.internal.JaegerTracer] (MSC service thread 1-4) No shutdown hook registered: Please call close() manually on application shutdown.
INFO  [io.jaegertracing.internal.JaegerTracer] (MSC service thread 1-2) No shutdown hook registered: Please call close() manually on application shutdown.

I'm not looking for anything nasty or complex here; feel free to reject this if something like that is needed.

Of course if what's it's asking for is something we should be doing but aren't, then this is a bug. But I assume whatever it would want done via a shutdown hook is not something an appserver that supports 'reload' would use a shutdown hook to accomplish.