- We say we can do failover in a couple of seconds. We want to make it subsecond, but we can't do that reliably yet. In HBase this story is much more mixed.
- We wanted to really reduce complexity, as a result, you can just apt-get install c5 on each node and you are done. It's one daemon, one log file, and that's it. No xmx nonsense, and almost no tuning or config files. I don't know if you have dealt with hadoop before, but the complexity is high.
- Finally we have a much more advanced wireformat. In fact it's advanced by being simple (protobufs + http). As a result clients in languages other than java become very easy, without a thrift client.
In the future expect even cooler features, but for v1 we are just aiming for HBase compat.