[jboss-user] [JBoss Seam] - problem passivation thread: ConcurrentModificationException

[lowecg2004]

Every now and then I get the following message in my logs:

2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.contexts.Lifecycle] destroying event context
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.core.Events] Processing event:org.jboss.seam.preDestroyContext.EVENT
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.contexts.Contexts] destroying: org.jboss.seam.core.manager
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.core.Events] Processing event:org.jboss.seam.preDestroy.org.jboss.seam.core.manager
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.core.Events] Processing event:org.jboss.seam.postDestroyContext.EVENT
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.seam.contexts.Lifecycle] <<< End call
  | 2006-12-05 12:27:09,109 DEBUG [org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager] Saving session state to: C:\bin\seam\jboss-4.0.5.GA\server\default\tmp\sessions\SessionTimeoutHandlerHome-evc97who-j\5c4o1d3r-qbr45g-evc97n34-1-evc9ht00-13.ser
  | 2006-12-05 12:27:09,249 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3 at 15d925b, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader at 524a69{ url=null ,addedOrder=0}
  | 2006-12-05 12:27:09,249 DEBUG [org.jboss.mx.loading.RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.HeirarchicalLoaderRepository3 at 15d925b, cl=org.jboss.mx.loading.HeirarchicalLoaderRepository3$CacheClassLoader at 9336bd{ url=null ,addedOrder=0}
  | 2006-12-05 12:27:09,265 DEBUG [org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager] Passivation complete; id=5c4o1d3r-qbr45g-evc97n34-1-evc9ht00-13
  | 2006-12-05 12:27:09,265 ERROR [org.jboss.ejb3.cache.simple.SimpleStatefulCache] problem passivation thread
  | java.util.ConcurrentModificationException
  | 	at java.util.LinkedHashMap$LinkedHashIterator.remove(LinkedHashMap.java:356)
  | 	at org.jboss.ejb3.cache.simple.SimpleStatefulCache$SessionTimeoutTask.run(SimpleStatefulCache.java:132)
  | 2006-12-05 12:31:17,104 DEBUG [org.jboss.resource.connectionmanager.IdleRemover] run: IdleRemover notifying pools, interval: 450000
  | 2006-12-05 12:38:47,100 DEBUG [org.jboss.resource.connectionmanager.IdleRemover] run: IdleRemover notifying pools, interval: 450000
  | 2006-12-05 12:41:50,052 DEBUG [org.jboss.seam.contexts.Lifecycle] End of session, destroying contexts
  | 2006-12-05 12:41:50,052 DEBUG [org.jboss.seam.contexts.Lifecycle] destroying conversation contexts: []
  | 2006-12-05 12:41:50,052 DEBUG [org.jboss.seam.contexts.Lifecycle] destroying session context

I'm using Seam 1.1 CR2, CVS 04-12-2006.

I haven't noticed any erratic behaviour in my application and as far as I can tell, this has just started to happen recently.

Cheers,

C.

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