[gatein-dev] JCR ConcurrentModificationExceptions with WSRP
Hi,
We are seeing occasional ConcurrentModificationException when accessing
certain portlets over wsrp. We already have a jira opened for this
https://jira.jboss.org/browse/GTNWSRP-84
The strange thing is that we have only been able to reproduce it on
linux machines, it doesn't appear to be reproducible on mac machines.
Has anyone seen issues like this before with respect to the jcr and
concurrent modifications? Or a jcr expert have a better idea to what the
issue is?
It looks like the wsrp jcr layer needs a bit of work to make it more
thread safe.
Caused by: java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at
org.exoplatform.services.jcr.impl.core.SessionDataManager.validate(SessionDataManager.java:1421)
at
org.exoplatform.services.jcr.impl.core.SessionDataManager.commit(SessionDataManager.java:1332)
at org.exoplatform.services.jcr.impl.core.ItemImpl.save(ItemImpl.java:681)
at org.exoplatform.services.jcr.impl.core.SessionImpl.save(SessionImpl.java:935)
at
org.gatein.portal.wsrp.state.JCRPersister$WSRPSessionLifeCycle.save(JCRPersister.java:191)
at org.chromattic.core.jcr.SessionWrapperImpl.save(SessionWrapperImpl.java:263)
at org.chromattic.core.DomainSessionImpl._save(DomainSessionImpl.java:583)
at org.chromattic.core.DomainSession.save(DomainSession.java:146)
at org.chromattic.core.api.ChromatticSessionImpl.save(ChromatticSessionImpl.java:223)
at org.gatein.portal.wsrp.state.JCRPersister.closeSession(JCRPersister.java:111)
at
org.gatein.portal.wsrp.state.consumer.JCRConsumerRegistry.update(JCRConsumerRegistry.java:116)
at
org.gatein.wsrp.consumer.registry.AbstractConsumerRegistry.updateProducerInfo(AbstractConsumerRegistry.java:249)