If I extend NonBlockingClientAdapter, but don't override the default implementations for both the onRetrying and onStopping methods then I can miss useful exception messages that could help me debug problems with my application.
The default implementations for onRetrying and onStopping should log any exceptions passed in as arguments - to make it more difficult for someone to miss this information. Such a change would not affect anyone who already overrides these methods (and presumably is looking at the exceptions being passed in). Anyone who doesn't override these methods - and doesn't want the exceptions to be logged can trivially override the methods and specify an empty method body.
If I extend
NonBlockingClientAdapter, but don't override the default implementations for both theonRetryingandonStoppingmethods then I can miss useful exception messages that could help me debug problems with my application.The default implementations for
onRetryingandonStoppingshould log any exceptions passed in as arguments - to make it more difficult for someone to miss this information. Such a change would not affect anyone who already overrides these methods (and presumably is looking at the exceptions being passed in). Anyone who doesn't override these methods - and doesn't want the exceptions to be logged can trivially override the methods and specify an empty method body.