Peter Tribble wrote:
> On Fri, Sep 12, 2008 at 8:34 AM, Petr Sumbera <Petr.Sumbera at sun.com> wrote:
>> Sriram Natarajan wrote:
>>> - Why tomcat 5.5 rather than 6.0 when 6.0 is compliant with the latest
>>> JSP/Servlet spec
>> This is valid point. I was thinking of doing upgrade later. Or to have
>> there both versions. But I believe there is no reason to have there two
>> versions, am I right?
> 
> Not necessarily. Is any application that worked under 5.5 guaranteed
> to work unchanged under 6.0?

Not for 100% but it's very likely. See:

http://marc.info/?l=tomcat-user&m=122159499330224&w=2

> I don't actually know, but I do know that previous changes to tomcat
> versions broke applications. I'm still supporting 4.0 and 4.1 in addition
> to 5.5, and my suggestions that we start investigating 6.0 in new projects
> haven't yet been taken up.

I'm pretty aware of incompatibilities between 4.0 and 4.1.I believe this 
is not case between 5.5 and 6.0 (even if it's major release).

> Generally, upgrading application components is hard and time consuming.
> I usually find it much harder than upgrading the underlying OS.

Petr

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