[jboss-user] [Clustering/JBoss] - Generating a NotSerializableException

[sparthan]

Hi all, 

  I want to give clustering support for a small application and it was not successfully done and is generating the following exception stack trace. 

java.io.NotSerializableException: nextapp.echo2.webrender.Connection
        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.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1284)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        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)


Please let me know how is this ObjectOutputStream.java is stopping something to be Serialized. 


Thank you in advance!!

Sri.. 


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