Hadoop-2.2 getting started, how to init a HDFS server on single node?

[Jerome <je...@ibt.unam.mx>]

Dear all

I'm was using hadoop-1.2 for some project, and be very enthousiast. Now, 
i want to switch to the new version 2.2, with Yarn. But reading the 
Getting Started document, i'm facing a "egg and chicken" problem: in the 
"Setting up a Single Node Cluster", it is asuming that we get HDFS 
running... and in the HDF User guide, as a Prerequisites, we need to 
have configured at least on single cluster node

Who can explain me a little how to begin with hadoop-2.2?

Best regards!
-- 
-- Jérôme
Quand on s'en va pour la première fois,
on ne sait pas comment se retourner.
	(Un Aller simple,Didier van Cauwelaert)