Can you disclose more about how K3 is generated. >From your description below, it is possible.
On Wed, Jun 9, 2010 at 1:17 AM, Oleg Ruchovets <[email protected]> wrote: > Hi , > 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 > Reducer > *input: InputFormat<K1,V1> > mapper: Mapper<K1,V1,K2,V2> > combiner: Reducer<K2,V2,K2,V2> > reducer: Reducer<K2,V2,K3,V3> > output: RecordWriter<K3,V3> > > *My question: > 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 > Oleg. >
