Why hadoop/hbase uses DNS/hosts/hostname in such a strange way?

Hi, I have configured a hadoop/hbase cluster recently and found it's really a mess with all those DNS, hostname and /etc/hosts configuration. There are many questions related to this all over the internet. So I'm wondering why hadoop/hbase designed in such a strange way, which is very abnorma

Re: Why hadoop/hbase uses DNS/hosts/hostname in such a strange way?

This may not answer why it is designed this way, but it should give you more insight into how it is done. Here is how the network resolution