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From "Andrew Kujtan" <akuj...@evertz.com>
Subject RE: Speeding up RMI calls
Date Fri, 27 Jul 2012 21:31:17 GMT
> > On 09/07/2012 16:55, Andrew Kujtan wrote:
> > > Tomcat Version: 7.0.27
> > >
> > > OS: Windows XP/7
> > > I'm fixing an issue we are having with a webapp that does some
> > > communication over RMI with a remote  server. Calls that would be
> > > instant in similar applications not inside the tomcat container
are
> > > taking more than 30 seconds when called from tomcat. After
> debugging
> > > I've found that  when an RMI call is made, the classlist
containing
> > > all the jars in the webapp lib folders is being serialized with
the
> > data.
> > > Which wouldn't be a problem normally, except the webapp has >300
> jars
> > > in its lib folder.
> >
> > In the other similar applications, are there 300+ jars on the
> classpath
> > too?
> >
> >
> > p
> 
> Yes they are there as well, but the RMI calls don't include them, or
> any
> urls
> for that matter.
> 
> >
> > > The only solution I have found is to create a custom
> > WebAppClassloader
> > > that returns a zero length URL array on the getURLs() call. We
> don't
> > > do any dynamic class loading so breaking that is not a problem.
> > >
> > > My question is, is there any other way to resolve this, like a
> > > configuration property? If not, are there any problems that I am
> > going
> > > to introduce by overriding this method? Can I override the
> > classloader
> > > for just this webapp or am I stuck doing it for the entire tomcat
> > > instance?
> > >
> > >
> > >
> > > Thanks,
> > >
> > > Andrew Kujtan

I guess no one has run into this issue before, I've pushed it through
and am just overloading the classloader in the server.xml 

Hopefully this doesn't break anything.

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