Hortonworks Data Platform (HDP) is an open source distribution of Apache Hadoop.
The Ambari GUI simplifies provisioning, managing, and monitoring Apache Hadoop clusters. Ambari installs Hadoop services across any number of Hadoop hosts and configures Hadoop services for the cluster. Ambari provides a centralized management solution for stopping, starting, and reconfiguring Hadoop services across the entire cluster. Ambari also provides a dashboard for monitoring the status of the Hadoop cluster. The dashboard uses the Ambari Metrics System for metrics collection and the Ambari Alert Framework for providing alerts.