Daniel Santos created WICKET-4849:
-------------------------------------
Summary: Nullpointer exception
org.apache.wicket.pageStore.AsynchronousDataStore.removeData
Key: WICKET-4849
URL: https://issues.apache.org/jira/browse/WICKET-4849
Project: Wicket
Issue Type: Bug
Components: wicket
Affects Versions: 1.5.7
Environment: JAVA 1.5, SAS8.2
Reporter: Daniel Santos
In production environment we get this stacktrace (every exact minute and until
the server is restarted). I cannot reproduce the problem locally. When this
exception appears, if I try to log out (invalidate the session via
getSession().invalidate()) I get the exact same exception on screen.
[#|2012-10-30T17:22:31.154+0100|SEVERE|sun-appserver-ee8.1_02|org.apache.catalina.core.ContainerBase|_ThreadID=22;|Exception
invoking periodic operation:
java.lang.NullPointerException
at
java.util.concurrent.LinkedBlockingQueue$Itr.<init>(LinkedBlockingQueue.java:624)
at
java.util.concurrent.LinkedBlockingQueue.iterator(LinkedBlockingQueue.java:605)
at
org.apache.wicket.pageStore.AsynchronousDataStore.removeData(AsynchronousDataStore.java:184)
at
org.apache.wicket.pageStore.DefaultPageStore.removePageData(DefaultPageStore.java:108)
at
org.apache.wicket.pageStore.DefaultPageStore.unbind(DefaultPageStore.java:156)
at
org.apache.wicket.page.PageStoreManager.sessionExpired(PageStoreManager.java:413)
at org.apache.wicket.Application.sessionUnbound(Application.java:475)
at
org.apache.wicket.protocol.http.WebApplication.sessionUnbound(WebApplication.java:509)
at
org.apache.wicket.session.HttpSessionStore$SessionBindingListener.valueUnbound(HttpSessionStore.java:454)
at
org.apache.catalina.session.StandardSession.removeAttribute(StandardSession.java:1380)
at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:761)
at
org.apache.catalina.session.StandardSession.isValid(StandardSession.java:600)
at
org.apache.catalina.session.StandardManager.processExpires(StandardManager.java:786)
at
org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:4822)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1620)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1609)
at java.lang.Thread.run(Thread.java:595)
|#]
[#|2012-10-30T17:23:31.173+0100|SEVERE|sun-appserver-ee8.1_02|org.apache.catalina.core.ContainerBase|_ThreadID=22;|Exception
invoking periodic operation:
java.lang.NullPointerException
at
java.util.concurrent.LinkedBlockingQueue$Itr.<init>(LinkedBlockingQueue.java:624)
at
java.util.concurrent.LinkedBlockingQueue.iterator(LinkedBlockingQueue.java:605)
at
org.apache.wicket.pageStore.AsynchronousDataStore.removeData(AsynchronousDataStore.java:184)
at
org.apache.wicket.pageStore.DefaultPageStore.removePageData(DefaultPageStore.java:108)
at
org.apache.wicket.pageStore.DefaultPageStore.unbind(DefaultPageStore.java:156)
at
org.apache.wicket.page.PageStoreManager.sessionExpired(PageStoreManager.java:413)
at org.apache.wicket.Application.sessionUnbound(Application.java:475)
at
org.apache.wicket.protocol.http.WebApplication.sessionUnbound(WebApplication.java:509)
at
org.apache.wicket.session.HttpSessionStore$SessionBindingListener.valueUnbound(HttpSessionStore.java:454)
at
org.apache.catalina.session.StandardSession.removeAttribute(StandardSession.java:1380)
at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:761)
at
org.apache.catalina.session.StandardSession.isValid(StandardSession.java:600)
at
org.apache.catalina.session.StandardManager.processExpires(StandardManager.java:786)
at
org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:4822)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1620)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1609)
at java.lang.Thread.run(Thread.java:595)
|#]
[#|2012-10-30T17:24:31.177+0100|SEVERE|sun-appserver-ee8.1_02|org.apache.catalina.core.ContainerBase|_ThreadID=22;|Exception
invoking periodic operation:
java.lang.NullPointerException
at
java.util.concurrent.LinkedBlockingQueue$Itr.<init>(LinkedBlockingQueue.java:624)
at
java.util.concurrent.LinkedBlockingQueue.iterator(LinkedBlockingQueue.java:605)
at
org.apache.wicket.pageStore.AsynchronousDataStore.removeData(AsynchronousDataStore.java:184)
at
org.apache.wicket.pageStore.DefaultPageStore.removePageData(DefaultPageStore.java:108)
at
org.apache.wicket.pageStore.DefaultPageStore.unbind(DefaultPageStore.java:156)
at
org.apache.wicket.page.PageStoreManager.sessionExpired(PageStoreManager.java:413)
at org.apache.wicket.Application.sessionUnbound(Application.java:475)
at
org.apache.wicket.protocol.http.WebApplication.sessionUnbound(WebApplication.java:509)
at
org.apache.wicket.session.HttpSessionStore$SessionBindingListener.valueUnbound(HttpSessionStore.java:454)
at
org.apache.catalina.session.StandardSession.removeAttribute(StandardSession.java:1380)
at
org.apache.catalina.session.StandardSession.expire(StandardSession.java:761)
at
org.apache.catalina.session.StandardSession.isValid(StandardSession.java:600)
at
org.apache.catalina.session.StandardManager.processExpires(StandardManager.java:786)
at
org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:4822)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1620)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1609)
at java.lang.Thread.run(Thread.java:595)
|#]
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