Built on Apache Hadoop YARN architecture, HDP 2.0 changes Hadoop from a single-purpose Web-scale batch data processing platform into a multi-use operating system for batch, interactive, online, and stream processing. Case in point: Running SQL on Hadoop. Business analysts have been using SQL as the query language to perform ad-hoc queries against data warehouses for years. If you're creating a data lake using Hadoop, you've got to be able to query that data using SQL.