Re: Problems launching Tomcat 4.1.29...

[Jean-Francois Arcand]

Shapira, Yoav wrote:

Howdy,

 

It appears that Tomcat 4.1.29 brings the MBeans architecture (from
   

Tomcat
 

5.x) into its invocation process.  I'm not sure if it was intentional
   

to
 

bring the MBeans architecture into Tomcat 4.1.x or not...
   

A change of this magnitude doesn't happen accidentally ;)

The mbeans architecture was there since a long time.....way before 
4.1.29. And Tomcat 5 uses JMX much more that 4.1.x (all its internal 
architecture is now based on JMX).

 

I discovered this when I attempted to start Tomcat 4.1.29 using the
   

Sysdeo
 

Tomcat Launcher plug-in for Eclipse.  I had to tell the Tomcat Launcher
(Windows/Preferences/Tomcat) to treat Tomcat 4.1.29 as a Tomcat 5.x
version.
   

Thanks for posting the temporary workaround solution.  I'm sure Sysdeo
will update their plugin, they've done such a great job with it ;)
 

Hypothetical question:  Will application servers which run Tomcat 4.1.x
embedded break if they are upgraded to Tomcat 4.1.29?  Just a thought
   

(and
 

perhaps a caveat).
   

Good question.  It's up to the application server's developers to test
the embedded tomcat before they ship their server ;)  If, for example,
you're using JBoss 3.x with tomcat 4.1.27 and decide to update to tomcat
4.1.29 without changing the rest of JBoss, you leave it up to yourself
to test the combined server and make it work ;)  

The Embedded interface still work as expected althrough the recommended 
way it Tomcat 5 is to use JMX instead. But AFAIK, Tomcat 4.1.x should 
not suffer any regressions.

-- Jeanfrancois


Yoav Shapira



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