I am not sure if there is any example in documentation 
Claudio might know more.

Date: Fri, 19 Sep 2014 02:11:45 -0400
Subject: looking for a User guide

Hi all,

I was looking for a user guide for Giraph 1.0.0 or 1.1.0 but I could not find one with an example about writing your first Giraph application. Could anyone point me to one if exist?