Bandana dies and brings Confluence down with it when defrosting bad objects

I stored a Map which in turn contained a joda DateTime object using the BandanaManager against a Space. Apparently, Bandana doesn't like DateTimes and now Confluence dies at birth. This is caused by programmer error, but Confluence should be a little better at recovering from this kind of problem. As it is, I think I will have to restore from a backup to get my server back into any kind of working order. Thankfully it was just a test instance...

There are two exceptions I can find. They are listed below. Here is the dump I get at the browser:

-------------------------------------

java.lang.NullPointerException
at com.atlassian.confluence.setup.bandana.ConfluenceBandanaPersister.retrieve(ConfluenceBandanaPersister.java:36)
at com.atlassian.bandana.impl.CachingBandanaPersister.retrieve(CachingBandanaPersister.java:41)
at com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:34)
at com.atlassian.confluence.themes.DefaultThemeManager.getThemeSettings(DefaultThemeManager.java:53)
at com.atlassian.confluence.themes.DefaultThemeManager.getSpaceThemeKey(DefaultThemeManager.java:47)
at com.atlassian.confluence.themes.DefaultThemeManager.getSpaceTheme(DefaultThemeManager.java:42)
at com.atlassian.confluence.setup.sitemesh.ConfluenceSpaceDecoratorMapper.getSpaceThemeDecorator(ConfluenceSpaceDecoratorMapper.java:165)
at com.atlassian.confluence.setup.sitemesh.ConfluenceSpaceDecoratorMapper.getDecorator(ConfluenceSpaceDecoratorMapper.java:79)
at com.atlassian.confluence.setup.sitemesh.ConfluenceSpaceDecoratorMapper.getNamedDecorator(ConfluenceSpaceDecoratorMapper.java:50)
at com.opensymphony.module.sitemesh.mapper.AbstractDecoratorMapper.getNamedDecorator(AbstractDecoratorMapper.java:50)
at com.atlassian.confluence.setup.velocity.ApplyDecoratorDirective.render(ApplyDecoratorDirective.java:181)
at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:153)
at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:271)
at org.apache.velocity.Template.merge(Template.java:296)
at com.opensymphony.webwork.dispatcher.VelocityResult.doExecute(VelocityResult.java:91)
at bucket.util.profiling.ProfiledVelocityResult.doExecute(ProfiledVelocityResult.java:18)
at com.opensymphony.webwork.dispatcher.WebWorkResultSupport.execute(WebWorkResultSupport.java:116)
at com.opensymphony.xwork.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:263)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:187)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.intercept(DefaultWorkflowInterceptor.java:55)
at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:33)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.atlassian.confluence.core.ConfluenceValidationInterceptor.intercept(ConfluenceValidationInterceptor.java:16)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.security.actions.PermissionCheckInterceptor.intercept(PermissionCheckInterceptor.java:40)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.pages.actions.PageAwareInterceptor.intercept(PageAwareInterceptor.java:87)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:25)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.util.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:133)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.java:115)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.serviceAction(ServletDispatcher.java:229)
at com.opensymphony.webwork.dispatcher.ServletDispatcher.service(ServletDispatcher.java:199)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at com.atlassian.confluence.servlet.simpledisplay.SimpleDisplayServlet.doGet(SimpleDisplayServlet.java:45)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at com.atlassian.confluence.util.profiling.ProfilingPageFilter.parsePage(ProfilingPageFilter.java:150)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:168)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:170)
at bucket.custom.FlushingSpringSessionInViewFilter.doFilterInternal(FlushingSpringSessionInViewFilter.java:31)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:73)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.atlassian.confluence.util.error.ProfilingAndErrorFilter.doFilter(ProfilingAndErrorFilter.java:27)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.core.filters.gzip.GzipFilter.doFilter(GzipFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:552)

---------------------------------------------

And here is the one I get in the Tomcat log:

---------------------------------------------

2005-10-11 23:57:00,334 ERROR [confluence.setup.bandana.ConfluenceBandanaPersister] Error loading stream for context : com.atlassian.confluence.setup.bandana.ConfluenceBandanaContext@273c92
com.thoughtworks.xstream.converters.ConversionException: : null
---- Debugging information ----
required-type : org.joda.time.chrono.ISOChronology
cause-message : : null
class : com.atlassian.confluence.setup.bandana.ConfluenceBandanaConfigMap
message : : null
line number : 17
path : /confluence-config-map/values/entry/map/entry[2]/org.joda.time.DateTime/iChronology
cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException
-------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:45)
at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)
at com.thoughtworks.xstream.converters.reflection.ReflectionConverter.unmarshal(ReflectionConverter.java:100)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)
at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:82)
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:72)
at com.thoughtworks.xstream.converters.collections.MapConverter.unmarshal(MapConverter.java:59)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)
at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:82)
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:72)
at com.thoughtworks.xstream.converters.collections.MapConverter.unmarshal(MapConverter.java:59)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)
at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)
at com.thoughtworks.xstream.converters.reflection.ReflectionConverter.unmarshal(ReflectionConverter.java:100)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)
at com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(ReferenceByXPathUnmarshaller.java:39)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:99)
at com.thoughtworks.xstream.core.ReferenceByXPathMarshallingStrategy.unmarshal(ReferenceByXPathMarshallingStrategy.java:12)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:549)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:537)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:505)
at com.atlassian.confluence.setup.bandana.ConfluenceBandanaPersister.loadBandanaMap(ConfluenceBandanaPersister.java:72)
at com.atlassian.confluence.setup.bandana.ConfluenceBandanaPersister.retrieve(ConfluenceBandanaPersister.java:36)
at com.atlassian.bandana.impl.CachingBandanaPersister.retrieve(CachingBandanaPersister.java:41)
at com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:34)
at com.atlassian.confluence.mail.DefaultMailAccountManager.getMailAccounts(DefaultMailAccountManager.java:193)
at com.atlassian.confluence.mail.DefaultMailAccountManager.poll(DefaultMailAccountManager.java:43)
at com.atlassian.confluence.mail.DefaultMailAccountManager.pollAllSpaces(DefaultMailAccountManager.java:274)
at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy20.pollAllSpaces(Unknown Source)
at com.atlassian.confluence.mail.jobs.MailPollJob.executeInternal(MailPollJob.java:19)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:66)
at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)
Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: : null
at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:93)
at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.newInstance(PureJavaReflectionProvider.java:48)
at com.thoughtworks.xstream.converters.reflection.SerializableConverter.unmarshal(SerializableConverter.java:246)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:38)
... 43 more
Caused by: java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2435)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1245)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at org.joda.time.chrono.ISOChronology$Stub.readObject(ISOChronology.java:248)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:838)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at com.thoughtworks.xstream.converters.reflection.PureJavaReflectionProvider.instantiateUsingSerialization(PureJavaReflectionProvider.java:91)
... 46 more
2005-10-11 23:57:00,338 ERROR [org.quartz.core.JobRunShell] Job DEFAULT.mailPollJob threw an unhandled Exception:
java.lang.NullPointerException
at com.atlassian.confluence.setup.bandana.ConfluenceBandanaPersister.retrieve(ConfluenceBandanaPersister.java:36)
at com.atlassian.bandana.impl.CachingBandanaPersister.retrieve(CachingBandanaPersister.java:41)
at com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:34)
at com.atlassian.confluence.mail.DefaultMailAccountManager.getMailAccounts(DefaultMailAccountManager.java:193)
at com.atlassian.confluence.mail.DefaultMailAccountManager.poll(DefaultMailAccountManager.java:43)
at com.atlassian.confluence.mail.DefaultMailAccountManager.pollAllSpaces(DefaultMailAccountManager.java:274)
at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy20.pollAllSpaces(Unknown Source)
at com.atlassian.confluence.mail.jobs.MailPollJob.executeInternal(MailPollJob.java:19)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:66)
at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)
2005-10-11 23:57:00,345 ERROR [org.quartz.core.ErrorLogger] Job (DEFAULT.mailPollJob threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: java.lang.NullPointerException]
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)

• Nested Exception (Underlying Cause) ---------------
  java.lang.NullPointerException
  at com.atlassian.confluence.setup.bandana.ConfluenceBandanaPersister.retrieve(ConfluenceBandanaPersister.java:36)
  at com.atlassian.bandana.impl.CachingBandanaPersister.retrieve(CachingBandanaPersister.java:41)
  at com.atlassian.bandana.DefaultBandanaManager.getValue(DefaultBandanaManager.java:34)
  at com.atlassian.confluence.mail.DefaultMailAccountManager.getMailAccounts(DefaultMailAccountManager.java:193)
  at com.atlassian.confluence.mail.DefaultMailAccountManager.poll(DefaultMailAccountManager.java:43)
  at com.atlassian.confluence.mail.DefaultMailAccountManager.pollAllSpaces(DefaultMailAccountManager.java:274)
  at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:324)
  at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
  at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
  at $Proxy20.pollAllSpaces(Unknown Source)
  at com.atlassian.confluence.mail.jobs.MailPollJob.executeInternal(MailPollJob.java:19)
  at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:66)
  at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
  at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)