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From Phil Stanhope <stanh...@gmail.com>
Subject Re: Cassandra on AWS across Regions
Date Thu, 02 Sep 2010 12:52:18 GMT
Ben, can you elaborate on some infrastructure topology issues that would
break this approach?

On Wed, Sep 1, 2010 at 6:25 PM, Benjamin Black <b@b3k.us> wrote:

> On Wed, Sep 1, 2010 at 4:16 PM, Andres March <amarch@qualcomm.com> wrote:
> > 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.
> >
>
> All nodes would have to resolve whenever topology changed.
>
> > 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.
> >
>
> This case is not actually solved more simply by gossiping hostnames.
> It requires much more in-depth understanding of infrastructure
> topology.
>
>
> b
>

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