Owen O'Malley is a co-founder and technical fellow at Hortonworks. Owen has been working on Hadoop since the beginning of 2006 at Yahoo, was the first committer added to the project. He used Hadoop to set the Gray sort benchmark in 2008 and 2009. In the last 10 years, he has been the architect of MapReduce, Security, and now Hive. Recently he has been driving the development of the ORC file format and adding ACID transactions to Hive.