[CASSANDRA-94] Remove mix of ip-address and hostnames

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.3
• Assignee: Jonathan Ellis
• Reporter: Per Mellqvist

Authors

Jonathan Ellis

• Created: 22/Apr/09 20:55
• Updated: 16/Apr/19 09:33
• Resolved: 24/Apr/09 23:30

Description

The mix of ip-address and hostnames may cause confusion and problems.

One example is that the EndPoint is internally represented as a four byte IPv4 address in the gossip messages, but upon arrival there is a reverse-lookup into a hostname that is used to create the new EndPoint java object on the receiver side. This is likely to cause problems if a fully qualified hostname is used on one end but the reverse lookup returns just a short machine name, or vice versa.

It also has the strange effect that if you configure ListenAddress using IP-addresses it works only if it is NOT possible to do a reverse lookup of those addresses.

Suggest FBUtilities.getHostName() is renamed to getHostAddress() and made to always return the string representation of the IPv4 address.
Additionally EndPoint.fromBytes() should not attempt a reverse lookup, but just convert the four byte wire format of the IP to the string representation.

Issue Links

• is blocked by: CASSANDRA-102 System tests