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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 44534] New: ConcurrentModificationException upon container startup
Date Tue, 04 Mar 2008 21:27:24 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=44534

           Summary: ConcurrentModificationException upon container startup
           Product: Tomcat 5
           Version: 5.5.26
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: asf_bugzilla@wintermancer.com


I have to restart my server several times to avoid the following:

4-Mar-08 12:56:12 AM org.apache.catalina.connector.MapperListener init
WARNING: Error registering contexts
java.util.ConcurrentModificationException
   at java.util.HashMap$HashIterator.next(libgcj.so.8rh)
   at gnu.javax.management.Server.queryMBeans(libgcj.so.8rh)
   at org.apache.catalina.connector.MapperListener.init(catalina-5.5.26.jar.so)
   at org.apache.catalina.connector.Connector.start(catalina-5.5.26.jar.so)
   at org.apache.catalina.core.StandardService.start(catalina-5.5.26.jar.so)
   at org.apache.catalina.core.StandardServer.start(catalina-5.5.26.jar.so)
   at org.apache.catalina.startup.Catalina.start(catalina-5.5.26.jar.so)
   at java.lang.reflect.Method.invoke(libgcj.so.8rh)
   at org.apache.catalina.startup.Bootstrap.start(bootstrap.jar.so)
   at org.apache.catalina.startup.Bootstrap.main(bootstrap.jar.so)
4-Mar-08 12:56:12 AM org.apache.jk.common.ChannelSocket init

When I get it, the webapps do not load properly.

I installed Tomcat 5.5.26 on Fedora 8 x86_64 with RPMs:

108$rpm -qa | grep tomcat
jakarta-commons-pool-tomcat5-1.3-9jpp.3.fc8
tomcat5-servlet-2.4-api-5.5.26-1jpp.2.fc8
tomcat5-jsp-2.0-api-5.5.26-1jpp.2.fc8
tomcat5-jasper-5.5.26-1jpp.2.fc8
jakarta-commons-collections-tomcat5-3.1-9jpp.2.fc7.1
tomcat5-common-lib-5.5.26-1jpp.2.fc8
tomcat5-server-lib-5.5.26-1jpp.2.fc8
tomcat5-admin-webapps-5.5.26-1jpp.2.fc8
tomcat5-webapps-5.5.26-1jpp.2.fc8
jakarta-commons-dbcp-tomcat5-1.2.1-10jpp.2.fc8
tomcat5-5.5.26-1jpp.2.fc8

The machine is dual CPU with dual cores, and is using gcj as installed by
default with Fedora 8 RPMs.


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