No-NameNode Architecture

The MapR Distribution for Apache Hadoop, uniquely architected for high availability, is the only Hadoop distribution with full protection from single or multiple failures within the system. Other Hadoop distributions have a single NameNode that works in an active-standby mode that protects from single point of failure. Beyond the one failure, the system does not meet any kind of HA SLAs. With MapR, the NameNode has been eliminated with a distributed architecture that provides high availability and improved throughput. So there is no data loss or downtime even in the face of multiple software or hardware errors and failures. With a no-NameNode architecture, there are no limits to the number of files a cluster can support allowing users to support trillion files on one cluster.