as for running a distributed command and get the output back, I use either of (in order of preference) - pssh, dsh, clusterssh there is also C3 (Cluster Command & Control) but have'nt used it yet.
2008/4/30 Allen Wittenauer <[EMAIL PROTECTED]>: > On 4/29/08 1:36 PM, "Bradford Stephens" <[EMAIL PROTECTED]> > wrote: > > What do you all use to run your Hadoop clusters? I haven't found a good > tool > > to let me run a command on multiple machines and examine the output, > yet. > > We basically use a set of custom tools that sit on top of netgroup and > ssh. I'm hoping at some point we can share these too, after we spend some > time cleaning them up. > >