Fixes MAHOUT-1202.

https://issues.apache.org/jira/browse/MAHOUT-1202

This issue relates to the design document at
https://docs.google.com/document/d/1g1PjUuvjyh2LBdq2_rKLIcUiDbeOORA1sCJiSsz-JVU/edit#heading=h.koi571fvwha3jj



git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1478958 13f79535-47bb-0310-9956-ffa450edef68