Two ways:
1. To close all DNs, use hadoop-daemons.sh (notice the plural). Doing
hadoop-daemons.sh stop datanode will stop all datanodes listed in
slaves file.
2. To close an individual DN, ssh the command on the specific box.
{{ssh dnbox01 hadoop-daemon.sh stop datanode}}.
On Thu, May 17, 2012 at 4:25 AM, waled tayiib <waledta...@yahoo.com> wrote:
>
>
> Hi,
>
> I was wandering if anyone could explain to me if its possible and how I can
> stop a data node
> from the namenode computer. I have been trying to do it with
> hadoop-daemon.sh but it only lets me
> stop the datanode on that machine.
> I need to stop the datanodes on the other machines.
> Any help is greatly appreciated!
>
> Thanks,
> Waled
--
Harsh J
