Hey Michael,

The script specified by dfs.network.script is passed both host names
and IPs. In most cases an IP is passed, however in some cases (eg when
using dfs.hosts files) a hostname is passed.

Thanks,
Eli

ps - useful pointers:

http://mail-archives.apache.org/mod_mbox/hadoop-common-user/200911.mbox/%3c4b041edf.8050...@videoegg.com%3e

http://wiki.apache.org/hadoop/topology_rack_awareness_scripts


On Fri, May 7, 2010 at 9:40 AM, Michael Segel <michael_se...@hotmail.com> wrote:
>
> Ok,
>
> I should know this... but just to be safe...
>
> When setting up the rack aware script, will the input to the script always be 
> the machine's IP address, or will it be the actual hostname?
>
> I'm pretty sure that its the IP address, but I just wanted to make sure and 
> cover my bases.
>
> Thx
>
> -Mike
>
>
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