What is SQL Server Polybase?
Coming in SQL Server 2016 is the ability to query relational tables as well as data stored in Hadoop or Azure Blob storage. This technology will allow you to continue to leverage SQL Server for your data warehousing and access data stored in different formats and technologies to combine data into consolidated views. This feature is currently still be enhanced in the CTP releases. For Microsoft shops looking for ways to leverage big data and other data stores, keep up with these releases to see how best to utilize this in your environment.
For complete information see: https://msdn.microsoft.com/en-us/library/Mt143171.aspx