High availability configuration

For HortonWorks HDP, you could configure HA from Ambari GUI directly. For open source Apache Hadoop, refer the following sections.

Manual HA switch configuration
High Availability (HA) is implemented in HDFS Transparency by using a shared directory in the IBM Storage Scale file system.
Automatic NameNode service HA
Automatic NameNode Service HA is supported in gpfs.hdfs-protocol 2.7.0-2 and later. The implementation of high availability (HA) is the same as NFS-based HA in native HDFS. The only difference is that except for the NFS shared directory in native HDFS, HA is not needed for HDFS transparency.

Parent topic: Administering