Technical Preview Features

The following features are available within HDP 2.6.2 but are not ready for production deployment. Hortonworks encourages you to explore these technical preview features in non-production environments and provide feedback on your experiences through the Hortonworks Community Forums.

Table 1.1. Technical Previews

Component	Feature
Druid	Introduced in a previous release: Druid 0.9.2
HBase and Phoenix	Introduced in a previous release: HBase storage quota on HDFS HBase backup/restore supports bulk loaded data Phoenix repair tool - A repair tool for corrupted system tables (PHOENIX-3165) Backup and restore Phoenix operability with Microsoft .NET Driver Phoenix Storage Handler for Hive integration Cell-level ACLs Column Family Encryption Phoenix-Spark Integration RPC Throttling Support for `init.d` scripts
HDFS	Introduced in a previous release: G1 GC support for HDFS
Hive	Introduced in a previous release: Stored Procedures Client-Side LLAP / Spark security interface Phoenix Storage Handler for Hive integration
Ranger	Introduced in a previous release: Support for S3 authorization in Ranger Hive Plugin
Slider	Introduced in a previous release: Support for Docker-based application packaging (SLIDER-780)
Spark	Introduced in a previous release: Spark SQL Ranger integration for row and column security, for Spark 2.1 DataSet API GraphX
Storm	Introduced in a previous release: Storm SQL: run SQL queries over streaming data in Storm Automatic back pressure Pacemaker daemon Resource-aware scheduling
YARN	Introduced in a previous release: Add support for network I/O isolation/scheduling for containers (YARN-2140) NodeManager: add cgroup support for disk I/O isolation (YARN-2619)

​Technical Preview Features

Technical Preview Features