We can leave the ticket open and see how things develop.
I probably should have mentioned in the original ticket description that this was the intention.
I should have also mentioned that, although I created this ticket, I'm with Josh on possibly making it conditional on a stable release of hadoop2 (depending on how things go), before I sign off on it.
An additional point I'd like to clarify: if implemented, this would simply be the default hadoop version in the dependencies in the POM... the goal, of course, would be to maintain both source and binary compatibility with both, as much as possible, for the foreseeable future. And, since hadoop dependencies are marked as "provided", anyway, this ticket doesn't really propose much of a change at all.