Having to restart tomcat again this morning at 2am has prompted me to re-send this message to the list. Can anyone tell me why tomcat was fine for many months, but now crashes every two days? The stack trace is printed below.
Eric Luhrs Lafayette College ---------- Forwarded message ---------- From: Eric Luhrs <elu...@gmail.com> Date: Fri, Sep 18, 2009 at 11:29 AM Subject: org.apache.cocoon.ProcessingException: Sitemap: error when calling sub-sitemap To: dspace-tech@lists.sourceforge.net Greetings, I have made no changes to DSpace or Manakin in months, but for some reason DSpace keeps crashing with the following error. A simple restart of tomcat fixes the problem, but it's getting to be a pain since it happens every few days at about 2am (give or take an hour). I searched the list and found two recent help requests for the same problem, but no responses. Any information about why this happens or how to resolve it will be greatly appreciated. Stack trace follows. Eric Luhrs Lafayette College -- org.apache.cocoon.ProcessingException: Sitemap: error when calling sub-sitemap at <map:mount> - file:/usr/local/tomcat/webapps/ROOT/aspects/aspects.xmap:119:72 at <map:mount> - file:/usr/local/tomcat/webapps/ROOT/sitemap.xmap:300:80 at <map:serialize type="xml"> - resource://aspects/EPerson/sitemap.xmap:325:31 at <map:transform type="Navigation"> - resource://aspects/EPerson/sitemap.xmap:136:38 at <map:generate> - resource://aspects/EPerson/sitemap.xmap:125:19 at <map:serialize> - resource://aspects/Submission/sitemap.xmap:330:27 at <map:generate> - resource://aspects/Submission/sitemap.xmap:306:26 at <map:serialize type="xml"> - file:/usr/local/tomcat/webapps/ROOT/aspects/aspects.xmap:115:34 at <map:transform type="PageNotFound"> - file:/usr/local/tomcat/webapps/ROOT/aspects/aspects.xmap:114:43 at <map:generate> - file:/usr/local/tomcat/webapps/ROOT/aspects/aspects.xmap:113:22 at <map:serialize type="xhtml"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:177:34 at <map:transform type="NamespaceFilter"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:174:84 at <map:transform type="NamespaceFilter"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:173:78 at <map:transform type="i18n"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:167:33 at <map:transform> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:163:44 at <map:transform type="IncludePageMeta"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:147:45 at <map:generate type="file"> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/Main/sitemap.xmap:131:55 at <map:mount> - file:/usr/local/tomcat/webapps/ROOT/themes/Laf/sitemap.xmap:33:42 at <map:mount> - file:/usr/local/tomcat/webapps/ROOT/themes/themes.xmap:63:45 at <map:mount> - file:/usr/local/tomcat/webapps/ROOT/sitemap.xmap:361:73 at org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:112) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:121) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.SelectNode.invoke(SelectNode.java:102) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46) at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:107) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.buildPipeline(ConcreteTreeProcessor.java:192) at org.apache.cocoon.components.treeprocessor.TreeProcessor.buildPipeline(TreeProcessor.java:265) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:110) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46) at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.buildPipeline(ConcreteTreeProcessor.java:192) at org.apache.cocoon.components.treeprocessor.TreeProcessor.buildPipeline(TreeProcessor.java:265) at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:331) at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:213) at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:64) at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:208) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:552) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:539) at org.apache.cocoon.environment.wrapper.MutableEnvironmentFacade.resolveURI(MutableEnvironmentFacade.java:298) at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:78) at org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:112) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:384) at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:720) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:500) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:514) at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:341) at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:213) at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:64) at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:208) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:552) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:539) at org.apache.cocoon.environment.wrapper.MutableEnvironmentFacade.resolveURI(MutableEnvironmentFacade.java:298) at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:78) at org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:112) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:384) at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:720) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:500) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:514) at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:341) at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:213) at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:64) at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:208) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:552) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:539) at org.apache.cocoon.environment.wrapper.MutableEnvironmentFacade.resolveURI(MutableEnvironmentFacade.java:298) at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:78) at org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:112) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:384) at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:720) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:500) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:514) at org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:341) at org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:213) at org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:64) at org.apache.excalibur.source.impl.SourceResolverImpl.resolveURI(SourceResolverImpl.java:208) at org.apache.cocoon.components.CocoonComponentManager.resolveURI(CocoonComponentManager.java:541) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:552) at org.apache.cocoon.environment.AbstractEnvironment.resolveURI(AbstractEnvironment.java:539) at org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:78) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:384) at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:720) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:500) at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:452) at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:120) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46) at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176) at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176) at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46) at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:107) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176) at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176) at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252) at org.apache.cocoon.Cocoon.process(Cocoon.java:686) at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1153) at org.dspace.app.xmlui.cocoon.DSpaceCocoonServlet.service(DSpaceCocoonServlet.java:245) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.NullPointerException at java.util.LinkedList.remove(LinkedList.java:790) at java.util.LinkedList.removeFirst(LinkedList.java:134) at java.util.LinkedList.poll(LinkedList.java:470) at org.dspace.app.xmlui.aspect.administrative.CurrentActivityAction.act(CurrentActivityAction.java:110) at org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode.invoke(ActTypeNode.java:124) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142) at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68) at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234) at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.buildPipeline(ConcreteTreeProcessor.java:192) at org.apache.cocoon.components.treeprocessor.TreeProcessor.buildPipeline(TreeProcessor.java:265) at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:110) ... 134 more ------------------------------------------------------------------------------ Come build with us! 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