MapReduce vs RDBMS – Who would win?

There’s been a bit a of brouhaha in the database blogosphere following a comparison that was made between the MapReduce framework and modern relational database management systems.

In this post on the Database Column blog, authors David J. DeWitt and Michael Stonebraker argued, among other things, that MapReduce was "a giant step backward in the programming paradigm for large-scale data instensive applications."

The debate continued with many thoughtful comments added to the original post.

On January 25th, David and Michael responded to many of the comments with another post.