Hortonworks co-founder and Hadoop veteran Arun Murthy: They either scream at you or ignore you. I'd rather be screamed at. Having worked on Hadoop since day one in 2006, Hortonworks co-founder Arun Murthy is clear about the significance of the latest version of the open-source big-data technology. "Hadoop 2 is a big step. I've worked with Hadoop for seven and a half years and this is the first big