Hey,
I'd add it's possible, but not necessary for day-to-day operations.
We've got one data node instance which manages 48 disks... the single
node can probably support all the disk activity you have.
I'm not sure how certain activities, such as putting a node into the
hostsExclude, would work with multiple data nodes. One way to find out!
Brian
On Feb 26, 2009, at 1:55 AM, lohit wrote:
It is possible to run multiple datanodes.
You would have to have separate conf file for each datanode,
basically you need to have different datanode address
(dfs.datanode.address and related)
and different storage directories dfs.data.dir. Have different
configs and start each datanode instance with different conf
directory containing different conf file
Lohit
----- Original Message ----
From: Ajit Ratnaparkhi <[email protected]>
To: [email protected]
Sent: Wednesday, February 25, 2009 11:04:15 PM
Subject: multiple datanodes on single node cluster
Hi all,
Is it possible to run multiple datanode instances on single node
hadoop
cluster?
How to do that?
thanks,
-Ajit
