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From Allen Wittenauer <awittena...@linkedin.com>
Subject Re: How to Influence Reduce Task Location.
Date Sun, 19 Dec 2010 23:59:16 GMT

On Dec 19, 2010, at 10:23 AM, Jane Chen wrote:

> Suppose that the output is written to a database, that only runs on certain nodes.  It
will be desirable to schedule the reducer tasks to run on the nodes local or close to the
database nodes.


	a) That's a side-effect--pretty much "against the rules".  Very little support is provided
for such things.

	b) At a minimum, you'll need to write your own scheduler.



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