Hi all, Yee From your stack and your code, it seems that the problem comes from one of the Stripes class... When this exception occurs is it always at the same point? Is the stack always the same?
While I never encountered the problem, here is a way that could help you : You could use a load tester program such as JMeter (don't forget to make it share the session across the different virtual users). It would probably not reproduce the problem but would certainly make your life easy when testing with/without the different components. On your IDE, you could then set up an exception breakpoint on that ConcurrentModificationException and when raised pause the whole JVM (ie pause all the threads -- see breakpoint properties in Eclipse). From here, you can see where the different threads are at, and hopefully see where the double modifications is done. You would probably need to have the sources of Stripes and JRebel attached to your project (not in your project but just as a source lookup for Eclipse) in order to browse to the different classes. I know this is a bit of a bazooka to kill a fly, but this kind of "random" exception could be particularly tricky to pin point. If you have the time, the necessity, and most importantly not found a work around, this is how you could go... Regards, Sam On Fri, Feb 11, 2011 at 3:37 AM, Samuel Santos <sama...@gmail.com> wrote: > Hi Yee and Nikolaos, > > We do not use JRebel and have come across the same issue several times, so > it's surely a Stripes issue. > While we get the exception logged, it's transparent to the client, the > application does not crash and the client never sees an error. > This issue is very rare and only happens when you open multiple tabs at once > as Yee pointed out. > > -- > Samuel Santos > http://www.samaxes.com/ > > > On Thu, Feb 10, 2011 at 3:00 PM, Nikolaos Giannopoulos > <nikol...@brightminds.org> wrote: >> >> Yee, >> >> Well then... turn off JRebel and attempt to reproduce the bug... if you >> can't then it isn't Stripes. Right? >> >> I know its tempting to keep JRebel engaged all the time and I recall the >> time I hit a bug in JRebel and thought it was one in Stripes... it took >> me a long time to consider simply turning off JRebel... but if you >> already suspect JRebel then flip it off and attempt to reproduce. >> >> --Nikolaos >> >> >> >> Yee wrote: >> > Hi Nokolaos, >> > >> > The bug has already been reported to JRebel. Stripes plugin for JRebel >> > was >> > created by third party, so it could take a while for it to be fixed. >> > >> > My concern here is to ascertain whether ConcurrentModificationException >> > error is >> > a bug in Stripes - or caused by the bug in JRebel. >> > >> > Cheers, >> > Yee >> > >> > >> > >> > >> > >> > ------------------------------------------------------------------------------ >> > The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio >> > XE: >> > Pinpoint memory and threading errors before they happen. >> > Find and fix more than 250 security defects in the development cycle. >> > Locate bottlenecks in serial and parallel code that limit performance. >> > http://p.sf.net/sfu/intel-dev2devfeb >> > _______________________________________________ >> > Stripes-users mailing list >> > Stripes-users@lists.sourceforge.net >> > https://lists.sourceforge.net/lists/listinfo/stripes-users >> > >> > >> >> >> >> ------------------------------------------------------------------------------ >> The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: >> Pinpoint memory and threading errors before they happen. >> Find and fix more than 250 security defects in the development cycle. >> Locate bottlenecks in serial and parallel code that limit performance. >> http://p.sf.net/sfu/intel-dev2devfeb >> _______________________________________________ >> Stripes-users mailing list >> Stripes-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/stripes-users > > > ------------------------------------------------------------------------------ > The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: > Pinpoint memory and threading errors before they happen. > Find and fix more than 250 security defects in the development cycle. > Locate bottlenecks in serial and parallel code that limit performance. > http://p.sf.net/sfu/intel-dev2devfeb > _______________________________________________ > Stripes-users mailing list > Stripes-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/stripes-users > > -- Samuel Baudouin ------------------------------------------------------------------------------ The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: Pinpoint memory and threading errors before they happen. Find and fix more than 250 security defects in the development cycle. Locate bottlenecks in serial and parallel code that limit performance. http://p.sf.net/sfu/intel-dev2devfeb _______________________________________________ Stripes-users mailing list Stripes-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/stripes-users
