For the latest Azure Insider column Bruno Terkaly and I invited our colleague in France, Thomas Conté, to write an article about Telemetry Ingestion and Analysis using common cloud components, including Worker Roles, BLOB Storage, and HDInsight. He did an amazing job illustrating this specific workload, providing multiple options for each step of the process, as well as source codes samples. The online version of his article can be found here:
http://msdn.microsoft.com/en-us/magazine/dn745862.aspx
I hope that you find it useful.