This section highlights several new features in HDP 2.2.0.
In HDP 2.2.0, Spark 1.4.1 is now available as a certified component.
Support for Optimized Row Columnar (ORC) files
ML Pipeline API in PySpark (SPARK-3530)
Support for Ubuntu 12.0.4 and Ubuntu 14.0.4
Support for Debian 6 and Debian 7
