I had the privilege of keynoting this year’s Hadoop Summit, so I may be a bit prejudiced when I say the event confirmed my assertion that we have arrived at a turning point in Hadoop’s maturation. The large number of attendees (2500, a big increase – and more “suits”) and sponsors (70, also a significant uptick) made it clear that the growth is continuing apace. Gartner’s data confirms this – my inquiry rate continues to grow, and my colleagues covering big data and Hadoop are all seeing steady growth too. But it’s not all sweetness and light. There are issues – and here we’ll look at the centerpeice of the technical messaging: YARN. Much is expected – and we seem to be doomed to wait a while longer.