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 planning, deployment, and migration of components, applications, data, and nodes.
See the Release Notes for up-to-date information about migration issues.