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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: Two questions.
Date Thu, 04 Nov 2010 21:27:02 GMT

On Nov 3, 2010, at 7:27 PM, David B. Ritch wrote:

> The parameter mapred.hosts.exclude has existed in documentation for many
> versions, but I do not believe it has ever been implemented in the
> actual code.

mradmin -refreshNodes was added in 0.21.  So code definitely exists for it.

That said, if you aren't using it now, probably better to just kill the tasktracker.

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