MapR packages a broad set of Apache open source ecosystem projects that enable big data applications. The goal is to provide you with an open platform that lets you choose the right tool for the job. MapR tests and integrates open source ecosystem projects such as Hive™, Pig™, Apache™ HBase™ and Mahout, among others. The MapR Converged Data Platform and the open source projects are tied together through an advanced management console to monitor and manage the system.
The MapR Ecosystem Pack (MEP) delivers quick customer access to the latest innovations from the open source community, while ensuring interoperability of all ecosystem projects in a given MEP release. MapR pioneered the decoupling of platform versions from project versions, and MEP is the next evolution of that process. This decoupling gives customers flexibility on when to upgrade their environment, and MEP will ensure customers have a fully compatible deployment.
YARN (Yet Another Resource Negotiator) is a core component of Hadoop that manages access to all resources in a cluster. Before YARN, jobs were forced to go through the MapReduce framework, which is designed for long-running batch operations. Now, YARN brokers access to cluster compute resources on behalf of multiple applications, using selectable criteria such as fairness or capacity, allowing for a more general-purpose experience.