Calculate Average value in WordCount MapReduce on Hadoop
The famous example of Word Count that can be found here here Shows a simple MapReduce that sets counter of words.
Here I set an example that instead of counting the words, will print out the average value of word count.
In order to do so, we changed the original program:
- We separated between combiner and reducer (it was the same class used for both puposes)
- We created a new reducer that accumulates the Average value accross the iterations and eventually prints the final value