http://stackoverflow.com/questions/1552421/what-is-hadoop?rq=1
http://www.technology-mania.com/2011/03/hadoop-in-standalone-mode.html
https://github.com/infochimps-labs/wonderdog
LiLy
http://docs.ngdata.com/lily-docs-current/408-lily.html
LuceneCansandara
http://blog.sematext.com/2010/02/09/lucandra-a-cassandra-based-lucene-backend/