The rollback exception you see is caused by 

  | Caused by: org.jboss.cache.CacheException: unable to validate nodes
  |     at 
org.jboss.cache.interceptors.OptimisticValidatorInterceptor.validateNodes(OptimisticValidatorInt
  | erceptor.java:109)
  | 

which is the result of 2 or more threads attempting to concurrently modify some 
data.  Since data is optimistically locked (i.e., copied and versioned) there 
is always the potential for an exception like this to be thrown.

Still though, with the new OptimisticTreeCacheProvider using the Option API 
(http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossCacheOptionsAPI)  - specifically 
the failSilent option - this exception should not bubble up anywhere but simply 
be logged.

View the original post : 
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3933987#3933987

Reply to the post : 
http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3933987


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