It isn't the NN that does the SSH technically, its the scripts we ship
for an easier start/stop:
So wherever you launch the script, the SSH may happen from that point.
On Wed, Feb 6, 2013 at 4:36 AM, Jay Vyas <[EMAIL PROTECTED]> wrote:
> When setting up passwordless ssh on a cluster, its clear that the namenode
> needs to be able to ssh into task trackers to start/stop nodes and restart
> the cluster.
> What else is passwordless SSH used for? Do TaskTrackers/DataNodes ever SSH
> into each other horizontally ? Or is SSH only used for one-way nn to tt
> Jay Vyas