https://issues.apache.org/bugzilla/show_bug.cgi?id=52127

             Bug #: 52127
           Summary: java.lang.IncompatibleClassChangeError
           Product: Tomcat 6
           Version: 6.0.32
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Catalina
        AssignedTo: dev@tomcat.apache.org
        ReportedBy: kevinser...@sina.com
    Classification: Unclassified


Run application in tomcat 6.0.32, it works well. And suddenly, found
application cannot be accessed. Check tomcat log and found:

Aug 30, 2011 9:57:16 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet RPCAdapter threw exception
Throwable occurred: java.lang.IncompatibleClassChangeError
    at
javax.servlet.ServletRequestWrapper.getRemoteAddr(ServletRequestWrapper.java:260)
    at
javax.servlet.ServletRequestWrapper.getRemoteAddr(ServletRequestWrapper.java:260)
    at com.ibm.svc.gui.util.ServletUtils.getIpAddress(ServletUtils.java:83)
    at
com.ibm.svc.gui.util.security.ActiveUserManager.update(ActiveUserManager.java:111)
    at
com.ibm.svc.gui.servlets.filters.ServletFilter.doFilter(ServletFilter.java:94)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
    at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
    at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:736)

After restart tomcat, application back to normal. 

Is it a tomcat defect?

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