3.1. Technical Preview Features

The following features are available within HDP 2.3, 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.

Table 1.6. Technical Previews

Component	Feature
HBase and Phoenix	Phoenix Query Server (PHOENIX-971)
Ranger	Security features for data governance: global policies by metadata tags and searchable security access audit
Spark	SparkSQL, programmatically with SQLContext (not supported with Thrift Server - JDBC/ODBC) DataFrame API (SPARK-5097) Spark Streaming ML Pipeline API in PySpark (SPARK-3530) ORC file support Dynamic Executor Allocation
Storm	Elastic topology via YARN/Slider Monitoring of Storm topologies and clusters
YARN	NodeManager: add cgroup support for disk I/O isolation (YARN-2619) Add support for network I/O isolation/scheduling for containers (YARN-2140)

Legal notices