public class YourExceptionHandler extends FullAjaxExceptionHandler {

    public YourExceptionHandler(ExceptionHandler wrapped) {
        super(wrapped);
    }

    @Override
    public void handle() throws FacesException {
        Iterator<ExceptionQueuedEvent> events = getUnhandledExceptionQueuedEvents().iterator();

        if (events.hasNext() && events.next().getContext().getException() instanceof AbortProcessingException) {
            return; // Ignore (and don't log).
        }

        super.handle(); // Continue to FullAjaxExceptionHandler.
    }

}

public class YourExceptionHandlerFactory extends ExceptionHandlerFactory {

    private ExceptionHandlerFactory wrapped;

    public YourExceptionHandlerFactory(ExceptionHandlerFactory wrapped) {
        this.wrapped = wrapped;
    }

    @Override
    public ExceptionHandler getExceptionHandler() {
        return new YourExceptionHandler(getWrapped().getExceptionHandler());
    }

    @Override
    public ExceptionHandlerFactory getWrapped() {
        return wrapped;
    }

}