Garret Wilson created WICKET-5751:
-------------------------------------
Summary: NullPointerException in IntHashMap
Key: WICKET-5751
URL: https://issues.apache.org/jira/browse/WICKET-5751
Project: Wicket
Issue Type: Bug
Affects Versions: 7.0.0-M3
Environment: Windows 7 Profession 64-bit
Embedded Jetty 9.2.3.v20140905
Reporter: Garret Wilson
I was looking through a tester's log file to track down a separate issue. I
came across a {{NullPointerException}} with {{IntHashMap}}, apparently when the
server was shutting down.
See also WICKET-5584, which also deals with a {{NullPointerException}} with
{{IntHashMap}}, and also seems to relate to a {{null}} {{modCount}} (judging by
the line number).
{noformat}
INFO (ExampleServer) [2014-11-06 00:49:24,979] -
com.example.server.ExampleServer.stopServer(ExampleServer.java:268): Stopping
server.
INFO (ServerConnector) [2014-11-06 00:49:24,982] -
org.eclipse.jetty.server.AbstractConnector.doStop(AbstractConnector.java:306):
Stopped ServerConnector@3b7d3a38{HTTP/1.1}{0.0.0.0:8099}
INFO (Application) [2014-11-06 00:49:24,983] -
org.apache.wicket.Application.destroyInitializers(Application.java:588):
[org.apache.wicket.protocol.http.WicketFilter-55b0dcab] destroy: Wicket core
library initializer
INFO (Application) [2014-11-06 00:49:24,983] -
org.apache.wicket.Application.destroyInitializers(Application.java:588):
[org.apache.wicket.protocol.http.WicketFilter-55b0dcab] destroy: Wicket
extensions initializer
ERROR (DiskDataStore) [2014-11-06 00:49:24,988] -
org.apache.wicket.pageStore.DiskDataStore.saveIndex(DiskDataStore.java:282):
Couldn't write DiskDataStore index to file
C:\Windows\SERVIC~2\NETWOR~1\AppData\Local\Temp\org.apache.wicket.protocol.http.WicketFilter-55b0dcab-filestore\DiskDataStoreIndex.
java.lang.NullPointerException
at
org.apache.wicket.util.collections.IntHashMap$HashIterator.<init>(IntHashMap.java:777)
at
org.apache.wicket.util.collections.IntHashMap$EntryIterator.<init>(IntHashMap.java:871)
at
org.apache.wicket.util.collections.IntHashMap$EntryIterator.<init>(IntHashMap.java:871)
at
org.apache.wicket.util.collections.IntHashMap.newEntryIterator(IntHashMap.java:896)
at
org.apache.wicket.util.collections.IntHashMap$EntrySet.iterator(IntHashMap.java:1055)
at
org.apache.wicket.util.collections.IntHashMap.writeObject(IntHashMap.java:1128)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at java.util.HashMap.internalWriteEntries(HashMap.java:1777)
at java.util.HashMap.writeObject(HashMap.java:1354)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at
org.apache.wicket.pageStore.DiskDataStore.saveIndex(DiskDataStore.java:274)
at
org.apache.wicket.pageStore.DiskDataStore.destroy(DiskDataStore.java:106)
at
org.apache.wicket.pageStore.AsynchronousDataStore.destroy(AsynchronousDataStore.java:118)
at
org.apache.wicket.pageStore.AbstractPageStore.destroy(AbstractPageStore.java:53)
at
org.apache.wicket.pageStore.AbstractCachingPageStore.destroy(AbstractCachingPageStore.java:102)
at
org.apache.wicket.page.PageStoreManager.destroy(PageStoreManager.java:437)
at org.apache.wicket.Application.internalDestroy(Application.java:659)
at
org.apache.wicket.protocol.http.WebApplication.internalDestroy(WebApplication.java:607)
at
org.apache.wicket.protocol.http.WicketFilter.destroy(WicketFilter.java:605)
at
org.eclipse.jetty.servlet.FilterHolder.destroyInstance(FilterHolder.java:173)
at org.eclipse.jetty.servlet.FilterHolder.doStop(FilterHolder.java:151)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:143)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:162)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStop(AbstractHandler.java:73)
at
org.eclipse.jetty.servlet.ServletHandler.doStop(ServletHandler.java:230)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:143)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:162)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStop(AbstractHandler.java:73)
at
org.eclipse.jetty.security.SecurityHandler.doStop(SecurityHandler.java:411)
at
org.eclipse.jetty.security.ConstraintSecurityHandler.doStop(ConstraintSecurityHandler.java:457)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:143)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:162)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStop(AbstractHandler.java:73)
at
org.eclipse.jetty.server.session.SessionHandler.doStop(SessionHandler.java:127)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:143)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:162)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStop(AbstractHandler.java:73)
at
org.eclipse.jetty.server.handler.ContextHandler.doStop(ContextHandler.java:833)
at
org.eclipse.jetty.servlet.ServletContextHandler.doStop(ServletContextHandler.java:215)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.stop(ContainerLifeCycle.java:143)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStop(ContainerLifeCycle.java:162)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStop(AbstractHandler.java:73)
at org.eclipse.jetty.server.Server.doStop(Server.java:456)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.stop(AbstractLifeCycle.java:89)
at com.example.server.ExampleServer.stopServer(ExampleServer.java:269)
at com.example.server.ExampleServer.stop(ExampleServer.java:279)
INFO (ContextHandler) [2014-11-06 00:49:24,990] -
org.eclipse.jetty.server.handler.ContextHandler.doStop(ContextHandler.java:863):
Stopped o.e.j.s.ServletContextHandler@63f259c3{/,null,UNAVAILABLE}
{noformat}
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