The HDFS service, and specifically the NameNode, has a number of configuration options that are unique to it. This includes configuring HDFS for high availability, including the ability to automatically or manually fail over to a backup NameNode.

Continue reading:

• HDFS High Availability
• Federated Nameservices
• NameNodes
• DataNodes
• Backing Up HDFS Metadata
• Configuring HDFS Trash
• The HDFS Balancer
• Enabling HDFS Encrypted Transport
• Enabling WebHDFS
• Adding and Configuring an NFS Gateway