As long as the new node is in the slaves file on the master, just do a
start-all.sh and it will attempt to start everything. Nodes that are
already running will keep running and new nodes will be started.
Consider doing a rebalance after adding a new node for better
distribution.
-paul
On Oct 15, 2008, at 1:55 AM, "Amit k. Saha" <[EMAIL PROTECTED]>
wrote:
On Wed, Oct 15, 2008 at 9:09 AM, David Wei <[EMAIL PROTECTED]>
wrote:
It seems that we need to restart the whole hadoop system in order
to add new
nodes inside the cluster. Any solution for us that no need for the
rebooting?
From what I know so far, you have to start the HDFS dameon (which
reads the 'slaves' file) to 'let it know' which are the data nodes. So
everytime you add a new DataNode, I believe you will have to restarted
the daemon, which is like re-initiating the NameNode.
Hope I am not very wrong :-)
Best,
Amit
--
Amit Kumar Saha
http://blogs.sun.com/amitsaha/
http://amitsaha.in.googlepages.com/
Skype: amitkumarsaha
