> With a distributed data store, the data would become a logical
> object - no adding or removal of machines would affect the data.
> This is an ideal that would remove a tremendous maintenance
> burden from many sites ---- well, at least the one's I have worked
> at as far as I can see.
Two things:
1) Hadoop is the wrong technology. It's not designed to support
transactional operations.
2) Transactional operations are, in general, your Big Obstacle for doing
anything in the way of a distributed storage manager.
It's possible you could make both of the above "go away" if you were
planning for a DW platform in which transactions weren't important.
However, that would have to become an incompatible fork of PostgreSQL.
AFAIK, the Yahoo platform does not involve Hadoop at all.
--Josh