How to use R and other non-Java languages in MapReduce and Hive by Tom Hanlon.
From the post:
I teach for Hortonworks and in class just this week I was asked to provide an example of using the R statistics language with Hadoop and Hive. The good news was that it can easily be done. The even better news is that it is actually possible to use a variety of tools: Python, Ruby, shell scripts and R to perform distributed fault tolerant processing of your data on a Hadoop cluster.
In this blog post I will provide an example of using R, http://www.r-project.org with Hive. I will also provide an introduction to other non-Java MapReduce tools.
If you wanted to follow along and run these examples in the Hortonworks Sandbox you would need to install R.
The Hortonworks Sandbox just keeps getting better!