Slow app boot when trying to observe ActiveRecord::Base #35
Description
If you observe ActiveRecord::Base in order to do something if any model is changed there is some bug in how the observers lists are created causing the app boot to take a long time when eager loading code.
In our case we had an observer that removed comments if a model was destroyed and it had associated comments.
I've reproduced the issue here: https://github.com/barsoom/reproduce_observer_error
We don't use observers in any apps anymore, but thought I'd post this in case someone else had the same issue.