This guide provides instructions for migrating business-critical data and applications from an Apache Hadoop cluster to a MapR cluster.

The MapR distribution is 100% API-compatible with Apache Hadoop, and migration is a relatively straight-forward process. The additional features available in MapR provide new ways to interact with your data. In particular, MapR provides a fully read/write storage layer that can be mounted as a filesystem via NFS, allowing existing processes, legacy workflows, and desktop applications full access to the entire cluster.

Migration consists of the following steps: