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From "Aaron Mulder (JIRA)" <...@geronimo.apache.org>
Subject [jira] Created: (GERONIMO-522) Misleading GBean Startup Error Message
Date Tue, 07 Dec 2004 18:45:11 GMT
Misleading GBean Startup Error Message
--------------------------------------

         Key: GERONIMO-522
         URL: http://nagoya.apache.org/jira/browse/GERONIMO-522
     Project: Apache Geronimo
        Type: Bug
  Components: kernel  
    Versions: 1.0-M3    
    Reporter: Aaron Mulder
 Assigned to: Dain Sundstrom 


If a GBean fails to start, the error message generated is (for example):

org.apache.geronimo.kernel.config.InvalidConfigException: Invalid GBean configuration for
geronimo.config:name="org/apache/geronimo/Server"
        at org.apache.geronimo.kernel.Kernel.startRecursiveGBean(Kernel.java:379)
        at org.apache.geronimo.system.main.Daemon.main(Daemon.java:150)
Caused by: java.net.BindException: Address already in use
        at java.net.PlainSocketImpl.socketBind(Native Method)

The problem is, it's not usually an invalid GBean configuration (which says to me, a syntax
error in a config file or the like).  The GBean configuration is fine, it's really a startup
error.  The message would be better if it said "Unable to start GBean XYZ, see the 'Caused
By:' message below"

This commonly happens for network services when the port is already in use as above (arguably
a configuration problem, but the user has typically done no configuration at all when it happens,
because they probably just started Geronimo for the first time).

It commonly happens for applications when there's some sort of classloader problem resulting
in the wrong classes being loaded or a class not being found.  (For example, Struts/Spring/Hibernate
type web apps have a lot of Jakarta Common dependencies, and Tomcat supplies some of those
that Geronimo doesn't, so an app that worked in Tomcat may not work in Geronimo if all the
commons stuff isn't in the WAR).


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