MapReduce

Sample code of MapReduce talk for JUG Milano, available at https://www.slideshare.net/andreaiacono/mapreduce-by-examples

It contains the code for:

• a basic WordCount example
• finding the top-n used words in a text file with combiner
• finding the top-n used words in a text file with optimization
• Computing the mean of a set of numbers
• Executing a join between two data files
• executing K-means clustering on a dataset