Title | Random bug after several days |
Date | 06-Sep-2005 08:23:17 EEST |
Version | v2.2.28 |
Submitter | 24.9.151.33 |
Bug criticality | JSPWiki:BadBug![]() |
Browser version | Firefox |
Bug status | ClosedBug |
PageProvider used | VersioningFileProvider |
Servlet Container | Tomcat 5.0.28 |
Operating System | Windows XP |
URL | Comes and goes |
Java version | JDK 5 |
About once a week - I get an e-mail from someone saying that my wiki is hosed. When I got to the site, it shows:
JSPWiki has detected an error Error Message Tag failed, check logs: null Exception javax.servlet.jsp.JspException Place where detected com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(), line 74 If you have changed the templates, please do check them. This error message may show up because of that. If you have not changed them, and you are either installing JSPWiki for the first time or have changed configuration, then you might want to check your configuration files. If you are absolutely sure that JSPWiki was running quite okay or you can't figure out what is going on, then by all means, come over to jspwiki.org and tell us. There is more information in the log file (like the full stack trace, which you should add to any error report). And don't worry - it's just a computer program. Nothing really serious is probably going on: at worst you can lose a few nights sleep. It's not like it's the end of the world.
Here's what the log says:
2005-09-05 23:04:16,729 [TP-Processor16] ERROR com.ecyrd.jspwiki.tags.WikiTagBas e Raible's Wiki:Articles - Tag failed java.lang.NullPointerException at java.util.LinkedList.remove(LinkedList.java:220) at com.opensymphony.module.oscache.base.algorithm.LRUCache.getItem(LRUCa che.java:126) at com.opensymphony.module.oscache.base.algorithm.AbstractConcurrentRead Cache.get(AbstractConcurrentReadCache.java:667) at com.opensymphony.module.oscache.base.Cache.getCacheEntry(Cache.java:3 31) at com.opensymphony.module.oscache.base.Cache.getFromCache(Cache.java:63 7) at com.ecyrd.jspwiki.providers.CachingProvider.getTextFromCache(CachingP rovider.java:417) at com.ecyrd.jspwiki.providers.CachingProvider.getPageText(CachingProvid er.java:392) at com.ecyrd.jspwiki.PageManager.getPageText(PageManager.java:171) at com.ecyrd.jspwiki.WikiEngine.getPureText(WikiEngine.java:1203) at com.ecyrd.jspwiki.WikiEngine.getHTML(WikiEngine.java:1243) at com.ecyrd.jspwiki.tags.InsertPageTag.doWikiStartTag(InsertPageTag.jav a:106) at com.ecyrd.jspwiki.tags.WikiTagBase.doStartTag(WikiTagBase.java:61) at org.apache.jsp.templates.redman.ViewTemplate_jsp._jspx_meth_wiki_Inse rtPage_0(ViewTemplate_jsp.java:539) at org.apache.jsp.templates.redman.ViewTemplate_jsp._jspService(ViewTemp late_jsp.java:185) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper .java:324) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:2 92) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:157) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDisp atcher.java:704) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationD ispatcher.java:590) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDis patcher.java:510) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary .java:966) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.jav a:581) at com.ecyrd.jspwiki.tags.IncludeTag.doEndTag(IncludeTag.java:68) at org.apache.jsp.Wiki_jsp._jspService(Wiki_jsp.java:147) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper .java:324) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:2 92) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:157) at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewrit eFilter.java:323) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl icationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF ilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV alve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(Standard ContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV alve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:104) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica torBase.java:462) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j ava:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j ava:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal ve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv eContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav a:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:16 0) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.ja va:675) at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
Stopping and starting the context in Tomcat's Manager application fixes the problem.
Known problem, fixed in current CVS (2.2.33). You can wait for the stable for a few days, or just get the CVS version (see AnonymousCVSAccess) right now.
Thanks. Any idea when stable will be released? This bug has actually affected search for AppFuse on Google - notice the 3rd entry. ;-)
-- Matt
Ten minutes ago ;-)
You can also get errors like this if you change JSP pages in a way that Tomcat doesn't notice, for example using rsync. Some pages will be recompiled and others (e.g. the ones that are included) are not, leading to errors in pages.
If this happens, you can delete all files in your Tomcat work directory, forcing Tomcat to recompile everything.
-- ChrisWilson