MapReduce形象总结

We want to count all to the books in the library.You count up shelf #1,I count up shelf #2.

That's a map. The more people we get, the faster it gose.

我们要数图书馆里所有的书。你数1号书架的,我数2号书架的。这就是”map“。我们人数越多,就数的越快。

 

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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