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From Neil Bliss <neilbl...@gmail.com>
Subject Re: rack awareness help
Date Wed, 03 Mar 2010 19:09:11 GMT
On Wed, Mar 3, 2010 at 8:57 AM, Allen Wittenauer
<awittenauer@linkedin.com>wrote:

> On 3/3/10 4:11 AM, "Mag Gam" <magawake@gmail.com> wrote:
> > An example would be very helpful. There is only 1 paragraph about this
> > but its far too important not to have an example or two.
>
> I covered this in my preso to apachecon last year:
>
>
> http://wiki.apache.org/hadoop/HadoopPresentations?action=AttachFile&do=view&
> target=aw-apachecon-eu-2009.pdf
>
> aka
>
> http://bit.ly/d3UU4A
>
> You might find the example in/out helpful.  No code, but it is (seriously)
> trivial to write.
>

So in the "rack awareness" output, are there meaningful distance metrics
that should be provided, or is it simply a "local rack vs. non-local rack"
determination?

thanks,

Neil

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