We would like to test this technology on a real case scenario.
Do you have a VM available with Hadoop and Oracle Loader for Hadoop ? It will allow to speed up the installation or a step by step prototype guide?
We plan to have one available shortly. Have you checked the documentation on installing Oracle Loader for Hadoop? http://docs.oracle.com/cd/E37231_01/doc.20/e36961/start.htm#CHDIJGJD
It is installed on a node that can submit MapReduce jobs.
Cloudera has a prebuilt VM available that is running their version of Hadoop in a single node instance. I would imagine that you could get up and running pretty quickly by starting with it.