Jeremy, could you please try to debug and see which class Wicket is trying to resolve at class IObjectStreamFactory, line 70?
org.apache.wicket.util.io.IObjectStreamFactory$1.resolveClass(IObjectStreamFactory.java:70) Thanks, Bruno -----Original Message----- From: Jeremy Levy [mailto:[EMAIL PROTECTED] Sent: Monday, December 08, 2008 4:02 PM To: users@wicket.apache.org Subject: Clustering Problems / java.lang.StackOverflowError We have recently moved our application over to using clustering, we are running JBoss 4.2.3 with Tomcat 6 bundled using two nodes. After a few seconds with both nodes active and receiving traffic we start to see StackOverFlow exceptions. They don't originate from within our code and I'm a bit at a loss of how to troubleshoot this. Any help is appreciated. java.lang.StackOverflowError at EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap.hash(ConcurrentReaderHashMap.java:299) at EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap.get(ConcurrentReaderHashMap.java:411) at org.jboss.mx.loading.UnifiedLoaderRepository3.getCachedClass(UnifiedLoaderRepository3.java:222) at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:403) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:604) at org.apache.wicket.util.io.IObjectStreamFactory$1.resolveClass(IObjectStreamFactory.java:70) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1575) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:393) at org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(AbstractPageStore.java:228) at org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(DiskPageStore.java:706) at org.apache.wicket.protocol.http.pagestore.DiskPageStore.convertToPage(DiskPageStore.java:1230) at org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.getLastPage(SecondLevelCacheSessionStore.java:228) at org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.get(SecondLevelCacheSessionStore.java:296) at org.apache.wicket.Session.getPage(Session.java:751) at org.apache.wicket.protocol.http.pagestore.AbstractPageStore$PageHolder.readResolve(AbstractPageStore.java:363) at sun.reflect.GeneratedMethodAccessor123.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1061) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1762) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1667) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1323) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1945) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1869) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351) at org.apache.wicket.util.lang.Objects.byteArrayToObject(Objects.java:393) at org.apache.wicket.protocol.http.pagestore.AbstractPageStore.deserializePage(AbstractPageStore.java:228) at org.apache.wicket.protocol.http.pagestore.DiskPageStore.getPage(DiskPageStore.java:706) at org.apache.wicket.protocol.http.pagestore.DiskPageStore.convertToPage(DiskPageStore.java:1230) at org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.getLastPage(SecondLevelCacheSessionStore.java:228) The full stack trace just repeats this more or less. 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