UnavailableException

Hi, I have a question about the UnavailableException(String msg, int seconds)
Say, we have
protected void doGet(HttpServletResponse res, HttpServletREquest req)throws IOException, ServletException{
if(someBoolean){
throw new UnavailableExeption("Unavailable from doGet", 10);
}
// some presentation here;
}
The first time we get a someBoolean==true, and the UnavailableExcption was thrown for 10 seconds. Then within 3 seconds, a second request comes in while someBoolean is still ==true; this time, will the UnavailableException be overridden to another 10 seconds?
Moreover, if, within 3 seconds, another request comes with someBoolean==false, will the presentation be shown, or it will be referred to the designated error page?
Thanks.

By my reading of the API, subsequent requests will get a SERVICE_UNAVAILABLE (503) message until the time is up.
Bill

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Thank you Bill.