Optimal version of Rails for JRuby on Google App Engine?

I read Ola B.'s instructions for integrating JRuby/Rails with Google
App
Engine but I don’t believe it mentioned which version of Rails works
best.

Is it possible that some of the more recent Rails versions will not work
for
this type of project?

Hi,
I have not done any extensive work with GAE. But, I do have a project
that
uses rails 2.3.2 and is running fine on the app engine. I followed Ola
Bini’s instructions with the exception of the session store. I just
left it
as the default cookie store since I could not get his to work. So rails
2.3.2 should work fine. However, it only works in production mode.

Josh

That’s great. I didn’t expect 2.3.2 to be working.

That’s good to know about the session store. Thanks for the tip.