The easier approach is to make the hostname of the new NN same as the old one, else you'll have to update the new one on config files across cluster.
Sent from handheld, please excuse typos.
From: sumadhur <[EMAIL PROTECTED]>
Date: Tue, 1 May 2012 16:16:14
To: [EMAIL PROTECTED]<[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
Subject: updating datanode config files on namenode recovery
When a name node goes down and I bring up another machine as the new name node using the back up on a shared folder, do I have to update config files in each data node to point to the new name node and job tracker manually?
Or is there some other way of doing it automatically?