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18Nov/14Off

the simplest way to explain mapreduce

Below copy from internet:

下面这段话是网上其他人用最简短的语言解释MapReduce:

We want to count all the books in the library. You count up shelf #1, I count up shelf #2. That's map. The more people we get, the faster it goes.

我们要数图书馆中的所有书。你数1号书架,我数2号书架。这就是“Map”。我们人越多,数书就更快。

Now we get together and add our individual counts. That's reduce. 

现在我们到一起,把所有人的统计数加在一起。这就是“Reduce”。 

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