[jboss-user] [JBoss Seam] - Odd Errors and OutOfMemory

[modoc]

I have some odd errors showing up in my Seam app.  I am hoping that someone here can provide a little guidance.


Caused by: java.lang.IllegalStateException: could not acquire lock on @Synchronized component: mailQueue

the mailQueue component is session scoped, isn't synchronized by me, nor can I figure out why there would be any lock contention on it.  The error occurs when a property on the component is referenced from a page.


Caused by: javax.el.ELException: /email.xhtml @12,50 rendered="#{!mailQueue.expired}": Error reading 'expired' on type com.digitalsanctuary.seam.SessionMailQueue_$$_javassist_4
  | 	at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:76)
  | 	at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:370)

This happens rarely, but does occur more than once.


I also get about 100+ of these:


02:13:30,821 WARN  [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.BasicAction_58] - Abort of action id 4b7ed37a:bc61:471a5fe3:d8b98 invoked while multiple threads active within it.
  | 02:13:30,821 WARN  [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.CheckedAction_2] - CheckedAction::check - atomic action 4b7ed37a:bc61:471a5fe3:d8b98 aborting with 1 threads active!

Followed up by:


02:21:47,763 ERROR [STDERR] Exception in thread "Timer-0" 
  | 02:22:31,160 ERROR [STDERR] Exception in thread "Thread-4" 
  | 02:22:41,379 ERROR [STDERR] java.lang.OutOfMemoryError: Java heap space
  | 02:25:13,302 ERROR [SeamPhaseListener] uncaught exception
  | 02:27:50,873 ERROR [SeamPhaseListener] uncaught exception


And then I'm out of memory and everything blows up from there.

Any ideas?  The application is very simple, and used to run for months without issue.  

I don't understand why there would be lock contention issues with the mailQueue, and I don't know what the arjuna coordinator is doing or why it's failing.

Thanks!



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