Is anyone working on geospatial extensions to the databases built on Hadoop?

With the connections you have to the Hadoop development, I wondered if you knew of anyone working on geospatial extensions to the various databases built on Hadoop technology (Hive, cloudbase etc). I can imagine many people wish to do simple joins of latitude/longitude data with areas represented by polygons.
I am dealing with 100s millions of points and 100s thousands of polygons, and have done this in an adhoc manner using the JTS and Geotools libraries, but would like to see it more standardised.
Before considering trying to start a Hive, Cloudbase (or HBase with their secondary indexes coming I *think*) geospatial extension, I wondered if you knew of this already being developed elsewhere?
As a start I was thinking of implementing just a simple RTree index and allowing joins with geometry1.CONTAINS(geometry2) as I see this as the most important (joins of point data within a state, country, territory, known region, protected area etc etc).