Reply To: what is the daemon for a passive name node

Hi Ajith,

SecondaryNameNode in Hadoop 2.4.1 means the same thing as it did in the older release. Hadoop 2 by default does not install High Availability NameNodes. For more information on configuring High Availability for the NameNode service, please see the following documentation:

http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.7/bk_system-admin-guide/content/ch_hadoop-ha.html