Hadoop 3.0 HDFS HA

[#1]

In Hadoop 3.0, HDFS HA feature supports more than two namenodes.

https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithNFS.h...

Does Ambari supports HDFS HA more than two namenodes?

[#2]

@gcl8775 

Yes, Ambari allows more than 2 NameNodes via HDFS Federation. An HDFS federation allows you to scale a cluster horizontally by configuring multiple namespaces and NameNodes. 

https://docs.cloudera.com/HDPDocuments/Ambari-2.7.5.0/managing-and-monitoring-ambari/content/amb_con...

[#3]

Thank you for the answer.

But i'm trying to make namenode ha architecture like Active, Standby, Standby Namenode in one namespace.