Here is a wonderful presentation by John Berryman on how to integrate Mahout and Solr
http://prezi.com/z0dmaxdyuci0/equipping-solr-with-semantic-search-and- recommendation-20/ In it he highlights the difficulty of creating a truly integrated system, since lucene.vectors only works with Lucene 3.6, while atomic updates require version 4.0 and above. Does anybody know of any patch that would enable lucen.vectors to work on v4.0 lucene index, or any other way of generating the vector files required by Mahout. Kind Regards Swami Kevala
