[maxmcd]

My understanding is that they have different consistency models and different APIs. I think etcd might be better suited for more use-cases, but I don't think migration of existing systems is straightforward.

Some previous discussion here: https://news.ycombinator.com/item?id=18687516

I also enjoyed this lecture about zookeeper: https://www.youtube.com/watch?v=pbmyrNjzdDk