Make Unhandled Message logs appear in WARNING rather than DEBUG

[Aaronontheweb]

Ran into some issues with an Akka.NET application where the thing wouldn't run due to unhandled messages, which I couldn't see because the default logging level is INFO. Should we make these events appear inside the Akka.NET log by default by raising the log level to WARNING or INFO?

[ismaelhamed]

IMO users will then have to treat all messages in all the actor's defined behaviors just to avoid the warning/info logs.

I've always understood that was the reason you have to call base.Unhandled() yourself if you really care about unhandled messages, otherwise they're not even considered by the system. Once you do that, and if DEBUG level is not an option, then you can always either override that actor's Unhandled method or subscribe to UnhandleMessages in the event stream (which is basically what akka.actor.debug.unhandled = on does).

[Aaronontheweb]

That makes sense to me - better to let users opt-in to ones they care about vs. having to opt-out of all the ones they don't.