What is the differences between the two?
It seems like MR job could be configured using one of the other (e.g, extends
MapReduceBase implements Mapper of extends Mapper)
Cheers
Oleg
I am a little new to the hadoop world. But based on my readings and
understanding thus far, there is not much functionality difference. Only
difference is new API allows you to implement push and pull mechanisms in
your map/reduce tasks as against push in old API. Mapper has been changed
to super
Hi Oleg,
Mapreduce 0.20.* api has the support for both 0.19 api (which is
MapRed package in which your mapper should extend MRBase and implements
Mapper) and it has the new api as well (which is MapReduce packages where
you directly extend Mapper).
As there are significant
From a user perspective, at a high level, the mapreduce package can be
thought of as having user facing client code that can be invoked, extended
etc as applicable from client programs.
The mapred package is to be treated as internal to the mapreduce system,
and shouldn't directly be used unless
