HadoopDb

Here is a great article about scalable analytics and a hybrid system called HadoopDB

http://dbmsmusings.blogspot.com/2009/07/announcing-release-of-hadoopdb-longer.html


HadoopDB can be found at http://db.cs.yale.edu/hadoopdb/hadoopdb.html

Footnote mentions of open source column-store database systems such as MonetDB and Infobright