Hi, Jeff,
I think I misunderstand what you said about.
I think you want to say is that I can set ${hostname} in *-site.xml,
then I can use the codes you mentioned to get the hostname in my own
program, right?
Sorry that I didn't make my question clear.
The problem of mine now, is that I am deploying Hadoop on three computers,
but all three computers are sharing a same $HOME directory.
So that when I set the "dfs.data.dir" property in hdfs-site.xml, all three
computers will set their data directory into a same one.
When the HDFS starts, then only one datanode can lock the directory, and the
other two are fail.
My idea is that use $HOSTNAME to denote different directories to different
nodes.
But since you said there is no this internal environment variable inside,
then I think I have do find another way.
Can you tell me where I can find all those internal support variables?
Maybe I can find something inside.
Thank you!
On Thu, Mar 11, 2010 at 4:22 PM, Lu welman <[email protected]> wrote:
> Hi, Jeff.
>
> Thank you very much for the reply.
> Unfortunately, I don't where I can set the codes you mentioned.
> Can you tell me more about that?
> Thanks!
>
> Regards
> welman Lu
>
