Hi David,
On Sep 1, 2011, at 7:18 AM, [email protected] wrote:
> I am attempting to find a solid workaround for the memory leak of Subjects,
> which is bug GERONIMO-5800.
>
> Background:
>
> We have a JSF 1.2/Facelets web application, which uses FORM authentication
> with a SQL Database security realm.
>
> We logout users using a Filter, and so whenever a specific 'logout.faces'
> page is called, we do a simple invalidate of the session:
>
> HttpSession session = httpServletRequest.getSession(false);
> if (session != null) {
> session.invalidate();
> }
>
> Workaround Attempts:
>
> I tried adding the code suggested by David Jencks like this:
>
> HttpSession session = httpServletRequest.getSession(false);
> if (session != null) {
> session.invalidate();
> }
> Subject subject = ContextManager.getCurrentCaller();
> ContextManager.unregisterSubject(subject);
>
> That code ran without errors, but afterwards it caused EJB JNDI lookup errors
> on subsequent pages.
That seems very odd to me. Can you provide more details? maybe a stack trace
and a little bit of code context for the lookup? If we actually fixed this in
the jaspic code that's pretty much exactly what we'd do.
>
> Instead of unregistering the Subject, I can change it to simply
> ContextManager.clearCallers() and that runs without any errors at all. I'm
> just not sure if that will resolve the memory leak issue.
>
> Questions:
>
> 1. Does anyone know if simply calling clearCallers() should address the
> memory leak issue.
I don't think this would affect the memory leak. Something equivalent to
clearCallers() should already be happening as the request returns.
> 2. Does anyone have any ideas on what else I should try? I'm willing to
> change any part of our design in order to address this problem. Currently,
> we are restarting our server weekly to avoid out of memory errors.
I'd like to understand the problem you are seeing with the code I suggested
since I think any fix would basically be the same as the suggestion.
thanks
david jencks
>
> Thank you for any consideration you can provide.
>
> David Frahm
> Huber & Associates
> Office: 573-634-5000, Mobile: 573-298-1040
>
>
>
