I have got 2 questions regarding the regionservers file on the HBase master:
1. Do we need to update the regionservers file when adding or removing a region server from the cluster only if we administer it via SSH? The documentation (http://hbase.apache.org/book.html#adding.new.node) is quite unclear: "If you rely on ssh to start your daemons, don’t forget to add the new hostname in/conf/regionservers/on the master."
2. What is the regionservers file used for? Why can't the region servers and master discover each other through the Zookeeper /hbase/rs znode?
