Paolo,

Thanks for your tip. From that post I followed some links and stumbled
across something I had not noticed before (perhaps stupidly so): Yahoo's
Serpa/PNUTS system. It seems to use Lamport relativity as one of its
concepts, but also uses sharding as a core concept with no joins across
shards. I guess db engine architecting hasn't been this much fun since the
early 80's.

Paul

PS I agree with Ann that there is much confusion about terms in the field
currently. Not only is there the serialisable/isolation misunderstanding,
also "consistent" is often used to mean "atomic". The PNUTS paper is but
one example of this.


On Tue, 7 Sep 2010 18:19:04 +0100, Paulo Gaspar <paulo.gaspar@...>
wrote:

> There is already a brilliant reply / rebuttal:
>
>

http://yz.mit.edu/wp/infrequently-asked-questions-on-deterministic-distributed-transaction-management/

>
>
> Have fun,
> Paulo Gaspar