[hibernate-dev] EJB3/Hibernate/JBoss Cache intergration broken in EJB3 trunk

Carlo, FYI, there are a bunch of EJB3 clustered entity test failures in AS trunk due to a bad interaction between Hibernate 3.2.4.SP1 and JBoss Cache 2.0.0. Basically, this is a temporary mismatch between Hibernate and JBC. There's work in Hibernate Core's trunk for the 3.3 release that can let us resolve this, but for now the tests are going to fail. Problem is the integration layer ends up calling the JBC putForExternalRead() method when it needs to cache something in the "UpdateTimestampsCache". JBC treats a calls to this method as a no-op if the cache node in question already exists. This is new behavior in JBC 2.0. It's the necessary and intended behavior when the method is called for caching entities and collections. But when it's called for the UpdateTimestampsCache, it causes problems. The Hibernate 3.3. codebase gives us the flexibility to call a different method for the UpdateTimestampsCache call; to fix the problem we need determine the exact behavior we want for the UpdateTimestampsCache call and make the appropriate call to JBC. -- Brian Stansberry Lead, AS Clustering JBoss, a division of Red Hat brian.stansberry(a)redhat.com