Hi, I have a question regarding quorum in context to http://stackoverflow.com/questions/13022244/zookeeper-reliability-three-versus-five-nodes
Zookeeper requires that you have a quorum of servers up, where quorum is ceil(N/2). For a 3 server ensemble, that means 2 servers must be up at any time, for a 5 server ensemble, 3 servers need to be up at any time. 1. what does quorum mean? 2. so does ceil(N/2) mean 3+1/2 = 4/2 which is 2 servers in context to 3 server ensemble and 5+1/2 = 6/2 which is 3 servers in context to 5 server ensemble if the ceil(N/2) is a ceiling function? 3. what does ensemble mean in context to Apache zookeeper? I would appreciate your help. Regards, Kaushal
