Re: how to use two reduce fucntions?

[Amar Kamat]

Can you provide more details on what exactly what you wish to do? What 
is the nature of reducers? A simple answer would be with map(m) 
and reducers(r1,r2) you can run 2 jobs i.e job1(m,r1) and 
job2(IdentityMapper,r2). But it depends what exactly r1 and r2 do. Also 
combiners will play an important role. Also can one merge r1 and r2 to r 
and run a job(m,r)
Amar
On Sat, 23 Feb 2008, ma qiang 
wrote:

Hi all,
   I have a program need to use two reduce fucntions, who can tell me why?
   Thank you!

Qiang