Re: Sun one WS : clean shutdown
From: William Brogden (wbrogden_at_bga.com)
Date: 03/31/04
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Date: Tue, 30 Mar 2004 14:47:07 -0800
"asaguden" <asaguden@lycos.com> wrote in message
news:b190197d.0403301136.76aa5332@posting.google.com...
> Thank you for your input.
>
> I have read some of it and I can only agree with you,
> but now my problem seems to be that SUN ONE WEB Server,
> doesnt call servlet.destroy() - it just kills the process
> 'kill -9'...
Are you saying that Sun One does not provide some sort of orderly
shutdown!?!?
With Tomcat you have to run the shutdown.bat to get orderly shutdown
with destroy() methods called, etc. - if you kill it with ctrl-C then
destroy
does not get called.
>
> And I have posted that question [does SUN ONE call destroy()?] more
> than once - no answer.
> Thanks SUN for keeping the light shine on Java development. :-(
>
> / asaguden
>
> "William Brogden" <wbrogden@bga.com> wrote in message
news:<40697619$1@giga.realtime.net>...
> > "asaguden" <asaguden@lycos.com> wrote in message
> > news:b190197d.0403292308.1d88e405@posting.google.com...
> > > Thank you for your reply,
> > >
> > > I had a hunch I could use it.
> > > But how do I know which servlet is 'destroyed' last?
> > >
> > > I can specify in my web.xml which one gets loaded first,
> > > can I specify which on gets removed last?
> >
> > No - you will have to plan things so that everything that must be
> > cleaned up is either in one place or has no dependence on the
> > order of cleanup.
> >
> > >
> > > And also on the subject - can I be absolutely certain the servlets
NEVER
> > > gets destroyed more than once during the application lifetime, ie
> > > can there never be timeout/reload?
> >
> > The servlet engine is allowed to discard/destroy servlets arbitrarily
> > if it needs to - for example to reduce memory use - HOWEVER, it
> > can never do that if there is an active request. A given instance of
> > a servlet will not be re-used once destroyed - the servlet engine will
> > have to create a new instance & do init() if a new request comes in.
> >
> > Downloading the complete servlet spec from java.sun.com is a good
> > idea.
> >
> > >
> > > / asaguden
> > >
> > > _______________________
> > > "William Brogden" <wbrogden@bga.com> wrote in message
> > news:<4068286d$1@giga.realtime.net>...
> > > >
> > > > I believe that the servlet destroy() method is what you want.
> > > > A correctly functioning servlet engine will call destroy during
> > > > the shutdown process.
> > > > Bill
> > > >
> > > >
> > > >
> > > >
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