Thanks Mike,
This is the complete exception trace, thanks for your help. It does appear
that this is thrown when wicket trying to serialize page.
06 Aug 2013 13:30:20.917 [http-apr-9999-exec-3] ERROR
o.a.w.serialize.java.JavaSerializer - Error serializing object class
com.a.b.web.HomePage [object=[Page class = com.a.b.web.HomePage, id = 0,
render count = 1]]
org.apache.wicket.WicketRuntimeException:
java.util.ConcurrentModificationException
at
org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:278)
~[wicket-core-6.6.0.jar:6.6.0]
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:342)
~[na:1.7.0_21]
at
org.apache.wicket.serialize.java.JavaSerializer.serialize(JavaSerializer.java:78)
~[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.pageStore.DefaultPageStore.serializePage(DefaultPageStore.java:376)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.pageStore.DefaultPageStore.storePage(DefaultPageStore.java:150)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.page.PageStoreManager$PersistentRequestAdapter.storeTouchedPages(PageStoreManager.java:383)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.page.RequestAdapter.commitRequest(RequestAdapter.java:171)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.page.AbstractPageManager.commitRequest(AbstractPageManager.java:98)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.page.PageManagerDecorator.commitRequest(PageManagerDecorator.java:73)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.page.PageAccessSynchronizer$2.commitRequest(PageAccessSynchronizer.java:281)
[wicket-core-6.6.0.jar:6.6.0]
at org.apache.wicket.Application$2.onDetach(Application.java:1628)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:105)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycleListenerCollection$3.notify(RequestCycleListenerCollection.java:101)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.util.listener.ListenerCollection$1.notify(ListenerCollection.java:120)
[wicket-util-6.6.0.jar:6.6.0]
at
org.apache.wicket.util.listener.ListenerCollection.reversedNotify(ListenerCollection.java:144)
[wicket-util-6.6.0.jar:6.6.0]
at
org.apache.wicket.util.listener.ListenerCollection.reversedNotifyIgnoringExceptions(ListenerCollection.java:113)
[wicket-util-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycleListenerCollection.onDetach(RequestCycleListenerCollection.java:100)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.onDetach(RequestCycle.java:619)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.detach(RequestCycle.java:568)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:286)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:244)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:188)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:267)
[wicket-core-6.6.0.jar:6.6.0]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
[catalina.jar:7.0.39]
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:344)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.ui.ntlm.NtlmProcessingFilter.doFilter(NtlmProcessingFilter.java:355)
[spring-security-ntlm-3.0.0.M2.jar:na]
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:98)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:150)
[spring-security-web-3.0.0.M2.jar:na]
at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
[spring-web-3.0.2.RELEASE.jar:3.0.2.RELEASE]
at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
[spring-web-3.0.2.RELEASE.jar:3.0.2.RELEASE]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
[catalina.jar:7.0.39]
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
[catalina.jar:7.0.39]
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
[catalina.jar:7.0.39]
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
[catalina.jar:7.0.39]
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
[catalina.jar:7.0.39]
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
[catalina.jar:7.0.39]
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
[tomcat-coyote.jar:7.0.39]
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
[tomcat-coyote.jar:7.0.39]
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)
[tomcat-coyote.jar:7.0.39]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[na:1.7.0_21]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_21]
at java.lang.Thread.run(Thread.java:722) [na:1.7.0_21] Caused by:
java.util.ConcurrentModificationException: null
at
org.apache.commons.collections.map.AbstractLinkedMap$LinkIterator.nextEntry(AbstractLinkedMap.java:560)
~[commons-collections-3.2.1.jar:3.2.1]
at
org.apache.commons.collections.map.AbstractLinkedMap$LinkMapIterator.next(AbstractLinkedMap.java:372)
~[commons-collections-3.2.1.jar:3.2.1]
at
org.apache.commons.collections.map.AbstractHashedMap.doWriteObject(AbstractHashedMap.java:1181)
~[commons-collections-3.2.1.jar:3.2.1]
at
org.apache.commons.collections.map.LRUMap.doWriteObject(LRUMap.java:420)
~[commons-collections-3.2.1.jar:3.2.1]
at
org.apache.commons.collections.map.LRUMap.writeObject(LRUMap.java:404)
~[commons-collections-3.2.1.jar:3.2.1]
at sun.reflect.GeneratedMethodAccessor156.invoke(Unknown Source)
~[na:na]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[na:1.7.0_21]
at java.lang.reflect.Method.invoke(Method.java:601) ~[na:1.7.0_21]
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
~[na:1.7.0_21]
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
~[na:1.7.0_21]
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
~[na:1.7.0_21]
at
org.apache.wicket.serialize.java.JavaSerializer$SerializationCheckerObjectOutputStream.writeObjectOverride(JavaSerializer.java:260)
~[wicket-core-6.6.0.jar:6.6.0]
... 50 common frames omitted
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