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
