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Computing

Map-Reduce

Map-Reduce 是用了分治的思想,所以能够用 MR 解决的问题也需要满足分治的条件。
MapReduce 分为 Map 和 Reduce两个核心阶段,Map 负责把任务拆分成若干个简单的任务,Reduce 负责对简单任务的合并。
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