The answer (a) is correct, in general.
On Wed, Nov 7, 2012 at 6:09 PM, Ramasubramanian Narayanan
ramasubramanian.naraya...@gmail.com wrote:
Hi,
Which of the following is correct w.r.t mapper.
(a) It accepts a single key-value pair as input and can emit any number of
key-value pairs as
Hi Rams,
A mapper will accept single key-value pair as input and can emit
0 or more key-value pairs based on what you want to do in mapper function
(I mean based on your business logic in mapper function).
But the framework will actually aggregate the list of values
