
数据被切分成小块,并复制到多个节点,以防硬件故障.mapreduce

mr库通过map(映射)和reduce(化简)两个函数来实现,说到底其核心思想也
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mapreduce的运行流程
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mapreduce执行流程及程序编写
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90大数据技术之 hadoop (mapreduce)
数据被切分成小块,并复制到多个节点,以防硬件故障.mapreduce
mr库通过map(映射)和reduce(化简)两个函数来实现,说到底其核心思想也
mapreduce的运行流程
mapreduce执行流程及程序编写
90大数据技术之 hadoop (mapreduce)