JmxConfigurator is overly verbose about logging some things, and doesn't log enough in other cases.
- unregisterChannel does not have an equivalent for registerChannel(..., register_protocols=false)
It will log a WARN message for each protocol if the channel was registered with register_protocols=false
- several places log an exception at ERROR level then throw it.
If the exception is being thrown, it generally should not be logged above DEBUG
- a few spots catch and log an exception message but do not throw it
These should also log the full stack trace at DEBUG