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From "David Jencks (JIRA)" <...@geronimo.apache.org>
Subject [jira] Created: (GERONIMO-2079) No methodProxy in EJBInvocation at startup under heavy load
Date Fri, 02 Jun 2006 22:14:30 GMT
No methodProxy in EJBInvocation at startup under heavy load
-----------------------------------------------------------

         Key: GERONIMO-2079
         URL: http://issues.apache.org/jira/browse/GERONIMO-2079
     Project: Geronimo
        Type: Bug
    Security: public (Regular issues) 
  Components: OpenEJB  
    Versions: 1.1    
    Reporter: David Jencks
     Fix For: 1.2


After deploying daytrader, if you apply heavy load (50 threads) you get about 60 exceptions
like this:

java.lang.NullPointerException
        at org.openejb.proxy.EJBMethodInterceptor.createEJBInvocation(EJBMethodInterceptor.java:203)
        at org.openejb.proxy.EJBMethodInterceptor.intercept(EJBMethodInterceptor.java:131)
        at org.openejb.proxy.EntityEJBLocalObject$$EnhancerByCGLIB$$84c9ae5f.getDataBean(<generated>)
        at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2EntityLocal.doGet(PingServlet2EntityLocal.java:126)
        at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2EntityLocal.doPost(PingServlet2EntityLocal.java:54)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:615)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46)
        at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342)
        at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:534)                                         
                                                                    

Looking into the code, it appears that cglib is calling EJBMethodInterceptor with a null methodProxy.
 After these startup exceptions, which appear to occur within the first 2 seconds of load,
there are no further exceptions: i ran it for 17 minutes at 1200 pages/sec.

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