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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 7760] New: - null pointer exception during parallel requests
Date Fri, 05 Apr 2002 09:22:26 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=7760

null pointer exception during parallel requests

           Summary: null pointer exception during parallel requests
           Product: Cocoon 2
           Version: 2.0.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Major
          Priority: Other
         Component: general components
        AssignedTo: cocoon-dev@xml.apache.org
        ReportedBy: jrvosse@cwi.nl


I got a number of XSP/ESQL pages that also go through a XSLT pipeline.
All works well during sequential, one request at a time testing.  But when
multiple requests are submitted in parallel, I get a null pointer exception,
see strack trace below.

 The server encountered an internal error (Internal Server Error) that prevented
it from fulfilling this request.</u></p><p><b>exception</b>
<pre>java.lang.NullPointerException
        at
org.apache.cocoon.components.source.URLSource.getInfos(URLSource.java(Compiled
Code))
        at
org.apache.cocoon.components.source.URLSource.getLastModified(URLSource.java(Compiled
Code))
        at
org.apache.cocoon.servlet.CocoonServlet.getCocoon(CocoonServlet.java(Compiled Code))
        at
org.apache.cocoon.servlet.CocoonServlet.getCocoon(CocoonServlet.java(Compiled Code))
        at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java(Compiled Code))
        at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java(Compiled
Code))
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java(Compiled
Code))
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java(Compiled Code))
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java(Compiled Code))
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java(Compiled Code))
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java(Compiled
Code))
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java(Compiled
Code))
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java(Compiled
Code))
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java(Compiled Code))
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java(Compiled Code))
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java(Compiled Code))
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java(Compiled
Code))
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java(Compiled Code))
        at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:429)
        at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:495)
        at java.lang.Thread.run(Thread.java:498)

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