I didn't have anything specific in mind. I understand all the issues around DNS and not advocating only supporting hostnames (just thought it would be a nice option).  I also wouldn't expect name resolution to be done all the time, only when the node is first being started or during initial discovery.

One use case might be when nodes are spread out over multiple networks as the poster describes, nodes on the same network on a private interface could incur less network overhead than if they go out through the public interface.  I'm not sure that this is even possible given that cassandra binds to only one interface.


On 09/01/2010 03:23 PM, Benjamin Black wrote:
On Wed, Sep 1, 2010 at 3:18 PM, Andres March <amarch@qualcomm.com> wrote:
I thought you might say that.  Is there some reason to gossip IP addresses
vs hostnames?  I thought that layer of indirection could be useful in more
than just this use case.

The trade-off for that flexibility is that nodes are now dependent on
name resolution during normal operation, rather than only at startup.
The opportunities for horribly confusing failure scenarios are
numerous and frightening.  Other than NAT (which can clearly be dealt
with without gossiping hostnames), what do you think this would
enable?


b

--
Andres March
amarch@qualcomm.com
Qualcomm Internet Services