2.1. Technical Preview Features

The following features are available within HDP 2.2.9, but are not ready for production deployment. We encourage you to explore these technical preview features in non-production environments and provide feedback on your experiences through the Hortonworks Community Forums.

Component	Feature
HDFS	HDFS Transparent Data at Rest Encryption (HDFS-6134)
Phoenix	Phoenix support for local secondary indexes
YARN	YARN support for Docker
Spark	Spark SQL Spark Streaming Spark DataFrame API ORC file support SparkSQL thrift JDBC/ODBC Server Dynamic Executor Allocation

	Note
	If you are using Spark 1.2.1 from an HDP on Windows 2.2.6, this Spark information is still applicable.

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