SessionFactory in QueryKey -------------------------- Key: HHH-6162 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6162 Project: Hibernate Core Issue Type: Bug Affects Versions: 4.0.0.Alpha2, 3.6.3, 4.0.0.Alpha1, 3.6.2 Environment: Hibernate 3.6.2, Postgresql 8.3 Reporter: Pawel Omelko Priority: Blocker I guess that after improvement HHH-5138, a ManyToOneType.java (and many other types) has reference to SessionFactory (by TypeFactory.TypeScope scope field). And now QueryKey, which contains Type[] positionalParameterTypes field, contains also SessionFactory - eg. ManyToOneType. So now we can find SessionFactory in QueryCache elements, which unnecessarily increase memory usage. There is another problem when cache replication is used (ehcache via RMI), I've got an exception during SessionFactory deserialization in receiver node: Apr 27 06:17:58 WARN net.sf.ehcache.distribution.RMIAsynchronousCacheReplicator:320 - Unable to send message to remote peer. Message was: null Apr 27 06:17:58 java.lang.NullPointerException Apr 27 06:17:58 at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768) Apr 27 06:17:58 at org.hibernate.impl.SessionFactoryObjectFactory.getNamedInstance(SessionFactoryObjectFactory.java:159) Apr 27 06:17:58 at org.hibernate.impl.SessionFactoryImpl.readResolve(SessionFactoryImpl.java:753) Apr 27 06:17:58 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) Apr 27 06:17:58 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) Apr 27 06:17:58 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) Apr 27 06:17:58 at java.lang.reflect.Method.invoke(Method.java:597) Apr 27 06:17:58 at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061) Apr 27 06:17:58 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762) Apr 27 06:17:58 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) Apr 27 06:17:58 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) Apr 27 06:17:58 at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) Apr 27 06:17:58 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) Apr 27 06:17:58 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) Apr 27 06:17:58 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) Apr 27 06:17:58 at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871) Apr 27 06:17:58 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) Apr 27 06:17:58 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) Apr 27 06:17:58 at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667) Apr 27 06:17:58 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) Apr 27 06:17:58 at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947) Apr 27 06:17:58 at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:480) Apr 27 06:17:58 at org.hibernate.cache.QueryKey.readObject(QueryKey.java:192) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira