[
https://issues.apache.org/jira/browse/WICKET-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543720
]
Matej Knopp commented on WICKET-1165:
-------------------------------------
Don't you have a background thread touching that page?
> Nullpointer serialization second level cache
> --------------------------------------------
>
> Key: WICKET-1165
> URL: https://issues.apache.org/jira/browse/WICKET-1165
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.0-rc1
> Reporter: Eelco Hillenius
> Assignee: Matej Knopp
> Fix For: 1.3.0-rc2
>
>
> A few times a week, we get this exception:
> 2007-11-19 07:29:52,914 ERROR org.apache.wicket.util.lang.Objects - Error
> serializing object class ts4.web.wicket.page.workspace.NavigationPage
> [object=[Page class = ts4.web.wicket.page.workspace.NavigationPage, id = 4,
> version = 0]]
> java.lang.NullPointerException
> at java.util.LinkedList.writeObject(LinkedList.java:755)
> at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:917)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1339)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1251)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1075)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
> at
> java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
> at
> java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
> at
> java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
> at
> java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
> at
> org.apache.wicket.util.io.IObjectStreamFactory$1.writeObjectOverride(IObjectStreamFactory.java:66)
> at
> java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:298)
> at
> org.apache.wicket.util.lang.Objects.objectToByteArray(Objects.java:1097)
> at
> org.apache.wicket.protocol.http.pagestore.AbstractPageStore.serializePage(AbstractPageStore.java:200)
> at
> org.apache.wicket.protocol.http.pagestore.DiskPageStore.storePage(DiskPageStore.java:709)
> at
> org.apache.wicket.protocol.http.SecondLevelCacheSessionStore$SecondLevelCachePageMap.put(SecondLevelCacheSessionStore.java:337)
> at org.apache.wicket.Session.requestDetached(Session.java:1391)
> at
> org.apache.wicket.RequestCycle.detach(RequestCycle.java:1016)
> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1263)
> at
> org.apache.wicket.RequestCycle.request(RequestCycle.java:489)
> at
> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:319)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:169)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1045)
> at
> ts4.web.ThreadLocalCleanupFilter.doFilter(ThreadLocalCleanupFilter.java:25)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1045)
> at
> org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1045)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:358)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:231)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:665)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:454)
> at
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:123)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:141)
> at org.mortbay.jetty.Server.handle(Server.java:303)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:452)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:721)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:509)
> at
> org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209)
> at
> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:349)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:320)
> at
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475)
> No idea how that happens.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
