关于MetaQ的master/slave机制

既然MetaQ的master和slave的brokerID是一样，那么MetaQ是如何知道从master还是从slave中pull message呢？怎样让consumer从slave中拉取数据而不是从master呢？我看了https://github.com/killme2008/Metamorphosis/wiki/%E6%BA%90%E7%A0%81%E5%88%86%E6%9E%90
中说client可以连接cluster上的任何一台机器包括master和slave,作为它的消息来源，类似数据库的读写分离。但是又有说：生产环境中有一台master和一个同步slave,slave是不注册到zookeeper上的，这句话是不是不对？我发现slave明明是在ZooKeeper中注册的。

Start with the linked MetaQ source-analysis wiki page and trace the master/slave and ZooKeeper registration behavior it describes. Compare that documentation with the reported broker discovery and consumer pull behavior; done means the master/slave and ZooKeeper statements are clarified or corrected.

Written by the indexing model from the issue text.