On a 2014 MacBook Pro Retina, does dual-booting the pre-installed OS X with Linux (say Ubuntu/Debian/Fedora/etc) void the hardware warranty? Does installing Linux and removing OS X void the hardware warranty?
I do not mind the entire hard disk being erased and set to a default OS X install if the machine has to be given for repair under warranty.
If you're going to suggest "reinstall OS X yourself before giving for repair", yes, that is an option if some non-essential component of the machine stops working. But it's not an option if the machine won't boot at all, which is when you'll be in need of servicing the most.
The country of purchase is India, if it matters.