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From Vinayakumar B <vinayakum...@apache.org>
Subject Re: Mappers and data locality
Date Tue, 03 Feb 2015 06:14:12 GMT
Yes bill..

Its the best effort. Sometimes you may see the rack-local  tasks as well
when the local nodemanager is busy for sometime.
In worst case it would be even off-rack also.

On Feb 3, 2015 11:38 AM, "Bill Hastings" <bllhastings@gmail.com> wrote:

> Are mappers always assigned to data nodes that contain the data? Or is
> this best effort? Will there ever be a situation where mappers are
> assigned to a data node where the data is not locally present?
> Regards
> Bill

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