Carl Yeksigian created CASSANDRA-5400:
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             Summary: Allow multiple ports to gossip from a single IP address
                 Key: CASSANDRA-5400
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5400
             Project: Cassandra
          Issue Type: New Feature
    Affects Versions: 2.0
            Reporter: Carl Yeksigian
            Assignee: Carl Yeksigian
             Fix For: 2.0


If a fat client is running on the same machine as a Cassandra node, the fat 
client must be allocated a new IP address. However, since the node is now a 
part of the gossip, the other nodes in the ring must be able to talk to it. 
This means that a local only address (127.0.0.n) won't actually work for the 
rest of the ring.

This also would allow for multiple Cassandra service instances to run on a 
single machine, or from a group of machines behind a NAT.

The change is simple in concept: instead of using an InetAddress, use a 
different class. Instead of using an InetSocketAddress, which would still tie 
us to using InetAddress, I've added a new class, "CassandraInstanceEndpoint". 
The serializer allows for reading a serialized Inet4Address or Inet6Address; 
also, the message service can still communicate with 
non-CassandraInstanceEndpoint aware code.

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