High Availability on HDFS clusters

Configuring HDFS High Availability (HA) eliminates the NameNode as a potential single point of failure (SPOF) in an HDFS cluster.

Configuring HDFS High Availability
The HDFS NameNode High Availability (HA) feature enables you to run redundant NameNodes in the same cluster in an Active/Passive configuration with a hot standby. This eliminates the NameNode as a potential single point of failure (SPOF) in an HDFS cluster.