trying to understand HashPartitioner

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Hi,

I am trying to understand how |HashPartitioner.java| works. Thus, I ran 
a mapreduce job with 5 reducers and 5 input files. I thought that the 
output of |getPartition(K2 key, V2 value, int numReduceTasks)| was the 
number of reduce task that |K2| and |V2| will execute. Is this correct?

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