ZooKeeper uses a custom atomic broadcast protocol, Zab, not Paxos: https://cwiki.apache.org/confluence/display/ZOOKEEPER/Zab+vs.+Paxos https://cwiki.apache.org/

ZooKeeper uses a custom atomic broadcast protocol, Zab, not Paxos: https://cwiki.apache.org/confluence/display/ZOOKEEPER/Zab+vs.+Paxos https://cwiki.apache.org/confluence/display/ZOOKEEPER/Zab+vs... (Atomic broadcast can be reduced to consensus, but frames the problem differently.)