>>1) The trunk has more master work. Specifically 89-master related >> features that we implemented for our grid architecture. > >You have a list of issues Nicolas?
It's at least 3 major features. We're more than willing to work with you on porting. It sounds like eBay & Cloudera have some possible demand for the functionality already... >> 2) Client/Server compatibility. Even if we upgraded the servers to >> 94/96/whatever, we still will have a lot of clients running 89 & we >>can't >> simply stop/start all of them at the same time. We need 89/trunk RPC >> compat for client/server. > >An 0.89 client should be able to talk to a 0.94+ server? That's what we need at least, to consider upgrading a system like Messages. I understand that we'll have to do most of this work, but it will definitely cause us a major inconvenience and severely delay our upgrade possibilities. I would caution against putting other HBase deployments based on later revisions in the same boat. Letting people add a feature without a smooth upgrade strategy is like accepting code without a peer review: there's a ton of hidden cost that you pretend not to notice.
