Thanks Dave, your info was very helpful.
I am talking about >dfs.namenode.name.dir< in the hdfs-site.xml which I think is the namenode storage dir.
For some reason during the install when this had 5 dirs by default, it failed to start, when I changed into just 1 dir, it started fine.
So just wanted to understand.
I have another question on the Region Manager for Hbase, I have 2 node cluster, I have Hbase and Region Server on server1(datanode1), I do not have Region server on the 2nd datanode in server2.Architecture pics show that region server should be installed on all datanodes ?
Whats the impact if I do not have the region manager on datanode2, and Can I add thru Ambari, can i do it while services are running,
Any configuration files I need modify when I add a region server to a datanode ?
I opened a separate thread for this, but please respond in any..