The new Apache Zeppelin Component Guide has instructions for installing, configuring, and using the web-based Zeppelin notebook for interactive data exploration and visualization.
The Apache Spark Component Guide was reorganized to focus on administration and development workflows: installing and configuring Spark, developing Spark applications, using SparkR, and tuning Spark. For HDP 2.5, the book includes the following new topics:
Installing the Spark 2.0 technical preview alongside Spark 1.6.2, using Ambari.