[matclayton]

Isn't this a Google version of Hive, which was open sourced by Facebook and provides an SQL style syntax to Hadoop. Queries aren't quick, it just allows offline data crunching to be coded quickly with out users having to code lots of map reduce. Cool concept but dont expect to see the online part of web apps powered by this.

[wyuenho]

Well this is pretty much a given isn't it? It's just a SQL implementation. It doesn't say anything about the underlying storage and guarantees. Given that it runs on GFS and Bigtable, unless these tech supports ACID, don't expect Tenzing to be able to support it either. Here's a quote from the paper:

    Tenzing is not ACID compliant - specifically, we are atomic, consistent and
    durable, but do not support isolation.