When doing shutdown we allow each thread up to 5 seconds to exit on its

When doing shutdown we allow each thread up to 5 seconds to exit on its
own after asking it nicely to do so. After 5 seconds we will cancel()
the thread. Its possible that we may loose messages in this manner
since its similar to a SIGTERM. Because of this we write messages to the
log about this event. If we are seeing these entries in the log we need
to track down why the thread is strugling to exit and fix it.