Perhaps paving the way for traditional SQL Vendors, Google's researchers published a paper describing Tenzing, a query engine built on top of MapReduce. Remarkably for Google this is a less disruptive technology since Tenzing supports a mostly complete SQL language syntax with some extensions.

The Tenzing is more than just a research concept, it is live and working at Google internally. Tenzing currently serves 10000+ queries per day over 1.5 petabytes of compressed data.

Tenzing combines enterprise characteristics such as heterogeneity, high performance, scalability, reliability, metadata awareness, low latency, support for columnar storage and structured data, and easy extensibility. Looks like we have a new old solution that boosts performance with a less disruptive syntax.

Source : Google Research