Why MapR? John Schroeder, MapR CEO, explains the MapR approach to enterprise Hadoop.

The MapR Distribution including Hadoop is the only distribution built from the ground up for your business-critical production applications. Built-in enterprise-grade features such as high availability, disaster recovery, security, and consistent snapshots let you deploy production-ready systems.
Along with the architectural innovations that provide business-critical success, MapR constantly tests, validates and hardens the core Apache projects before including them in its distribution. MapR uniquely supports earlier versions of most of the ecosystem projects.