Write your first MapReduce program in 20 minutes

This notebook provides a clear introduction to using map reduce for analyzing sales data, specifically in finding the maximum transaction value by store and effectively demonstrates it.

How does the reducer function operate on the data returned by the mapper function? What calculation does it perform?

Thank you for this article, I will get back to this when I will need it thank you one more time <3

The 20 minutes notebook is great for quick explanation, thx