CDAP Documentation v4.2.0

The Cask™ Data Application Platform (CDAP) is an integrated, open source application development platform for the Apache Hadoop® ecosystem that provides developers with data and application abstractions to simplify and accelerate application development, address a broader range of real-time and batch use cases, and deploy applications into production while satisfying enterprise requirements.

CDAP is a layer of software running on top of Hadoop platforms such as the Cloudera Enterprise Data Hub, the Hortonworks® Data Platform, or the MapR Distribution. CDAP provides these essential capabilities:

  • Abstraction of data in the Hadoop environment through logical representations of underlying data;
  • Portability of applications through decoupling underlying infrastructures;
  • Services and tools that enable faster application creation in development;
  • Integration of the components of the Hadoop ecosystem into a single platform; and
  • Higher degrees of operational control in production through enterprise best practices.

CDAP exposes developer APIs (Application Programming Interfaces) for creating applications and accessing core CDAP services. CDAP defines and implements a diverse collection of services that support applications and data on existing Hadoop infrastructure such as HBase, HDFS, YARN, MapReduce, Hive, and Spark.

These documents are your complete reference to the Cask Data Application Platform: they help you get started and set up your development environment; explain how CDAP works; and teach how to develop and test CDAP applications.

It includes the CDAP programming APIs and client interfaces, with instructions on the installation, monitoring and diagnosing fully distributed CDAP in a Hadoop cluster. CDAP capabilities include CDAP Pipelines and Metadata Management.