A new IDC report by Carl Olofson and Dan Vesset puts the Hadoop market in 2016 at $812.8 millions. I don't know how these numbers are calculated, but it feels like a low estimation. Maybe it's the open source origin of Hadoop and the price of the Amazon Elastic MapReduce that will keep this market under the billion. Or maybe there are sectors of the market that could not have been included in the estimation.
via NoSQL databases