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From Arun C Murthy <...@yahoo-inc.com>
Subject Re: difference between mapper and map runnable
Date Fri, 28 Aug 2009 18:56:31 GMT

On Aug 27, 2009, at 5:25 AM, Rakhi Khatwani wrote:

> Hi,
>        Whats the difference between a mapper and map runnable and its
> usage?

MapRunnable has more control. It has the iterator to the input keys/ 
values...

The new Map-Reduce api (context objects, available in hadoop-0.20  
onwards) you have both MapRunnable and ReduceRunnable.

Arun

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