Here are some videos I found that would explain MapReduce in detail

https://www.youtube.com/watch?v=7FcMhTTG1Cs – Part 1

https://www.youtube.com/watch?v=pDGLe4CsrhY – Part 2

https://www.youtube.com/watch?v=9h_WLsmRfFM – Part 3

https://www.youtube.com/watch?v=iiIDZTpdcuU – Part 4

https://www.youtube.com/watch?v=1aen3JsxkuM – Part 5

From the blog ani2017 » cs-wsu by anirudhu and used with permission of the author. All other rights reserved by the author.