-the same key in different reducers
Oleg Ruchovets 2010-06-09, 08:17
My hadoop job writes results of map/reduce to HBase.
I have 3 reducers.
Here is a sequence of input and output parameters for Mapper , Combiner and
Is it possible that more than one reducer has the same output key K3.
Meaning in case I have 3 reducers is it possible that
reducer1 K3 -* 1* , V3 [1,2,3]
reducer2 K3 - 2 , V3 [5,6,9]
reducer3 K3 - *1* , V3 [10,15,22]
As you can see reducer1 has K3 - 1 and reducer3 has K3 - 1.
So is that case possible or every and every reducer has unique output key?
Thanks in advance
Ted Yu 2010-06-09, 21:06
James Seigel 2010-06-09, 21:40
Ted Yu 2010-06-09, 21:43
Alex Kozlov 2010-06-09, 22:15
Owen O'Malley 2010-06-10, 02:30
Oleg Ruchovets 2010-06-10, 16:27
Owen O'Malley 2010-06-09, 21:22