Although Pier is sometimes harsh with his words he does have some valid
points.  I would be nice for tomcat to be somewhat modular so if all you
want is a servlet engine just get those components.  This also goes with
moving the CVS repositories.. so you can get only the modules you want
and build the parts of tomcat that you need with out all the overhead.

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] 
Sent: Tuesday, June 25, 2002 1:07 PM
To: Tomcat Developers List
Subject: HA tomcat ( was: RE: 5.0 proposal)

On Tue, 25 Jun 2002, GOMEZ Henri wrote:

> >> Pier could you detail what should be a Tomcat HA, and how
> >> it could fit in TC 5.0 proposal ?
> >
> >As far as I can remember it was voted -1...
> 
> What about TC 5.0 with HA capability ?

TC5.0 will have a 'higher availability' then 4.1 which is better
than 4.0. Same goes for 3.3 versus 3.2, and so on. 

<rant -stop reading if you're not interested in flames -->

I am trying as hard as possible to remain calm and on the 
subject when discussing with 'angry' Pier - but the FUD he 
is using is unbelievable.

He can't use tomcat4.0 in production ? Maybe he's trying to
do that with mod_webapp ( with no load balancing AFAIK, and 
'auto configuration' ). And he complains about features - 
well, Apache is full of features, and most people know how
to not enable the modules that they don't need on a production
site. 

Now he proposes a "HA tomcat" - as if all our efforts in 
so far has been in adding useless features and nobody else
cares about HA. Well, if you would pay attention a lot of 
work is beeing put in improving the lb ( an essential factor 
for HA ), in adding management ( guess what - JMX is not only
for configuration, but also for getting runtime info and notifications
),
and in improving the low-level objects to beter deal with the load
( that's coyote ) plus for 5.0 a simpler core that would allow
more modularity ( coyote again ).

And the solution he proposes:  removing 'useless' features like
jasper or JMX. 

Well, I know quite a few people who managed to get tomcat in
production on a variety of sites ( including very large loads). 
Even with tomcat3.2 - a generation behind the current 3.3 and 4.0.
They do that using load balancing and customizing the installation.
Unfortunately Pier's tomcat4.0 doesn't support load balancing,
and it seems he's having problems with the admin module of 4.1.
Well, send a patch - or just disable the offending module in 
your code. 

Tomcat out-of-box is feature full and more intended for developers
( who greatly outnumber the 'production sites'). If you read
the 5.0 proposal, it allows ( or includes ) the ability to 
release customized tomcats. 

Of course, nobody stops Pier on working on whatever he wants - 
a -1 means he can't do it in the main branch and he can't use 
the name 'tomcat', but the proposal/ area has allwasy been open.
If he can get a 'higher availability' than we'll get with 5.0 - 
great, we'll all be happy.

But now Pier treatens he'll just leave us oprhapns ( without 
a father). I certainly hope he's not serious with that, and if he
does - I hope he'll return. And in the meantime he may try to
learn to be a bit more polite and modest - and control his 
frustrations. 
 
</rant>

Costin


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