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Clustering an application by jboss produced this:

 
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Hi all,

I am trying to cluster a big application which is creating the following exception stack trace with no clue: Hoping to have a good discussion regarding this, I am posting this:

java.io.NotSerializableException: java.io.CharArrayWriter
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.Hashtable.writeObject(Hashtable.java:842)
at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.HashMap.writeObject(HashMap.java:1019)
at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187)
at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187)
at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1356)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187)
at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.Hashtable.writeObject(Hashtable.java:842)
at sun.reflect.GeneratedMethodAccessor136.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at nextapp.echo2.app.event.EventListenerList.writeObject(EventListenerList.java:187)
at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.ArrayList.writeObject(ArrayList.java:674)
at sun.reflect.GeneratedMethodAccessor132.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1527)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1492)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1284)
at sun.reflect.GeneratedMethodAccessor193.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:623)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:963)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1479)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1410)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1168)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
at org.jboss.web.tomcat.service.session.SessionBasedClusteredSession.writeExternal(SessionBasedClusteredSession.java:175)
at org.jboss.web.tomcat.service.session.JBossCacheService.externalizeSession(JBossCacheService.java:1027)
at org.jboss.web.tomcat.service.session.JBossCacheService.putSession(JBossCacheService.java:316)
at org.jboss.web.tomcat.service.session.JBossCacheClusteredSession.processSessionRepl(JBossCacheClusteredSession.java:121)
at org.jboss.web.tomcat.service.session.JBossCacheManager.processSessionRepl(JBossCacheManager.java:1097)
at org.jboss.web.tomcat.service.session.JBossCacheManager.storeSession(JBossCacheManager.java:652)
at org.jboss.web.tomcat.service.session.InstantSnapshotManager.snapshot(InstantSnapshotManager.java:49)
at org.jboss.web.tomcat.service.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java:98)
at org.jboss.web.tomcat.service.session.JvmRouteValve.invoke(JvmRouteValve.java:84)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:675)

 
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It seems like you're moving IN/OUT of the JVM an Object which doesn't implements Serializable. Verify that all your Beans support Serializable
Regards
Francesco
http://www.mastertheboss.com
 
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To add to what Francesco pointed, this seems to be happening when the session is being replicated. So ensure that you are not storing objects, which are not serializable, in the http session.
 
Srikanth Adapa
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Sure!!

But there are lots and lots of classes to be examined and to be serialized. Please clarify my small doubt. I have a class like:




Can I make the above class Serialized even if the List interface(COLLECTION)is not internally serialized? Please let me know how to overcome these type of situations?
 
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I assume you're talking about serialising classes that implement that interface? In that case then yes you need to account for each member variable in each class, see Sun's article on serialisation for details.
 
Srikanth Adapa
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Thank you Mr. Martin.
But still the Serialization has become a big mystery for me. As I am clustering an application which was already developed by others. And it is running very well when deployed on a single instance. But coming to clustering issue, its creating big mess due to serialization.
I want to know some basic designing knowledge regarding serialization. Hope you can spare some precious time for all for my queries with patience.

I ve got a NotSerializationException for a class. But it holds another class instance which is not serialized. So, when I tried to serialize that, It is containing some variables of type List, Map etc.

Can a class be serialized, when it is holding some class members of type List or map?


Thank you in advance.
 
Martijn Verburg
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Yes it can, as long as the objects that the Map or List hold are themselves serializable (sometimes this confuses people as they don't think that List and Map are serializable).
 
Srikanth Adapa
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To make all my confusions away, Please let me know if the following class extending DefaultHandler class can be serialized or not, which is holding some list objects.




Hope this completely avoid my confusions of Serializing a class.

Thank you.
 
Srikanth Adapa
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Let if the class also hold this CharArrayWriter object, which is also not serialized. If in this case, How to avoid the problem??


 
Martijn Verburg
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Originally posted by Srikanth Adapa:
To make all my confusions away, Please let me know if the following class extending DefaultHandler class can be serialized or not, which is holding some list objects.




Hope this completely avoid my confusions of Serializing a class.

Thank you.



It depends on what objects you are holding in the List. Each object in the List _must_ be serializable, otherwise the List won't serialize.
 
Martijn Verburg
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Originally posted by Srikanth Adapa:
Let if the class also hold this CharArrayWriter object, which is also not serialized. If in this case, How to avoid the problem??




You probably need to use a different class, e.g. One that is serializable. The alternative is that you don't actually need to have that serialized (be _very_ careful here) and in that case you can simply use the transient keyword and it will be ignored in terms of serialization.
 
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