Re: [PATCH 10/16] Introduce the concept that wal has a 'origin' node

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On 06/19/2012 01:47 AM, Christopher Browne wrote:
> That numbering scheme gets pretty anti-intuitive fairly quickly,
> from whence we took the approach of having a couple digits
> indicating data centre followed by a digit indicating which node in
> that data centre.
>
> If that all sounds incoherent, well, the more nodes you have
> around, the more difficult it becomes to make sure you *do* have a
> coherent picture of your cluster.
>
> I recall the Slony-II project having a notion of attaching a
> permanent UUID-based node ID to each node. As long as there is
> somewhere decent to find a symbolically significant node "name," I
> like the idea of the ID *not* being in a tiny range, and being
> UUID/OID-like...
>

Just as a sidenote, MySQL's new global transaction ids use a UUID for
the serverid bit of it. [1]

- - Hannu Valtonen

[1]
http://d2-systems.blogspot.fi/2012/04/global-transaction-identifiers-are-in.html
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