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41个字说明白mapreduce

丹阳 系统&架构 , 去评论

下面这段,不多评论了,简明扼要地道出了mapreduce的基本原理。

Goal: count the number of books in the library.

Map: You count up shelf #1, I count up shelf #2.

(The more people we get, the faster this part goes. )

Reduce: We all get together and add up our individual counts.

本文转自:https://www.chrisstucchio.com/blog/2011/mapreduce_explained.html

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