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From Jeff Genender <jgenen...@apache.org>
Subject Re: Classloader clashing and plugins
Date Mon, 03 Sep 2007 02:03:03 GMT


David Jencks wrote:
> - have a classloader per jar (an idea Dain suggested a long time ago,
> but it requires accurate jar-jar dependency information, better than is
> in maven poms)

This one was actually my expectation with the plugin.  I hoped that my
plugin had its own classloader...but I learned the hard way.  I would
tend to vote for this one...

Thanks,

Jeff

> thanks
> david jencks
> 
>>
>> Jeff
>>
>> David Jencks wrote:
>>> I would guess that something has included a jasper jar as a dependency
>>> (either by including it in a war lib or with a dependency on the jasper
>>> jar in the geronimo repo) rather than using a dependency on the jasper
>>> config.  If you can debug this CCE and find out what classloader the
>>> jasper class is loaded in that would be very useful.
>>>
>>> thanks
>>> david jencks
>>>
>>> On Sep 2, 2007, at 7:52 AM, Jeff Genender wrote:
>>>
>>>> Hi,
>>>>
>>>> I just finished the server plugin for Terracotta which can be found
>>>> here:
>>>>
>>>> http://svn.terracotta.org/svn/tc/geronimo-plugin/trunk/geronimo-2.0/
>>>>
>>>> When I install the plugin, everything is fine.  I can start/stop
>>>> Terracotta, and works as expected.  However when I stop Geronimo and
>>>> restart it and I go to the console, the console starts to spew errors
>>>> and we get errors in a majority of the portlets (as shown below).
>>>> Anyone know why a plugin's classes are interfering with other classes?
>>>> Do we have a classloader problem?  Any ideas on what is going on?
>>>>
>>>> Side note - Terracotta needs certain components from Jetty as artifacts
>>>> and I am running the Tomcat version of Geronimo.
>>>>
>>>> Thanks,
>>>>
>>>> Jeff
>>>>
>>>> 08:46:05,413 ERROR [normal_jsp]] Servlet.service() for servlet
>>>> jsp.WEB_002dINF.view.configmanager.normal_jsp threw exception
>>>> java.lang.ClassCastException: org.apache.jasper.runtime.ELContextImpl
>>>>         at
>>>> org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:920)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.view.configmanager.normal_jsp._jspx_meth_c_005fif_005f0(normal_jsp.java:133)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.view.configmanager.normal_jsp._jspService(normal_jsp.java:101)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.core.impl.PortletRequestDispatcherImpl.include(PortletRequestDispatcherImpl.java:65)
>>>>
>>>>
>>>>         at
>>>> org.apache.geronimo.console.configmanager.ConfigManagerPortlet.doView(ConfigManagerPortlet.java:353)
>>>>
>>>>
>>>>         at
>>>> javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:247)
>>>>         at javax.portlet.GenericPortlet.render(GenericPortlet.java:175)
>>>>         at
>>>> org.apache.pluto.core.PortletServlet.dispatch(PortletServlet.java:218)
>>>>         at
>>>> org.apache.pluto.core.PortletServlet.doGet(PortletServlet.java:158)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.pluto.core.PortletServlet.service(PortletServlet.java:153)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.invoker.impl.PortletInvokerImpl.invoke(PortletInvokerImpl.java:120)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.invoker.impl.PortletInvokerImpl.render(PortletInvokerImpl.java:73)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:119)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.core.PortletContainerWrapperImpl.renderPortlet(PortletContainerWrapperImpl.java:70)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.PortletFragment.service(PortletFragment.java:168)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.aggregation.ColumnFragment_jsp._jspService(ColumnFragment_jsp.java:70)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.aggregation.RowFragment_jsp._jspService(RowFragment_jsp.java:67)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.aggregation.PageFragment_jsp._jspService(PageFragment_jsp.java:71)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.aggregation.PageFragment_jsp._jspService(PageFragment_jsp.java:71)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
>>>>
>>>>
>>>>         at
>>>> jsp.WEB_002dINF.aggregation.RootFragment_jsp._jspService(RootFragment_jsp.java:109)
>>>>
>>>>
>>>>         at
>>>> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:557)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:481)
>>>>
>>>>
>>>>         at
>>>> org.apache.pluto.portalImpl.aggregation.AbstractFragment.service(AbstractFragment.java:112)
>>>>
>>>>
>>>>         at org.apache.pluto.portalImpl.Servlet.doGet(Servlet.java:254)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
>>>>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
>>>>
>>>>
>>>>         at
>>>> org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:56)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
>>>>
>>>>
>>>>         at
>>>> org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:351)
>>>>
>>>>
>>>>         at
>>>> org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:47)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>>>
>>>>
>>>>         at
>>>> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
>>>>
>>>>         at
>>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
>>>>
>>>>
>>>>         at
>>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
>>>>
>>>>
>>>>         at
>>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
>>>>
>>>>
>>>>         at
>>>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
>>>>         at java.lang.Thread.run(Thread.java:613)

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