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2-1 HadoopMapReduce&YARN-MR计算流程-Input&Block&计算向数据靠拢
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2-2 HadoopMapReduce&YARN-MR计算流程-Split切片
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2-3 HadoopMapReduce&YARN-MR计算流程-MapTask-数据读取
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2-4 HadoopMapReduce&YARN-MR计算流程-MapTask-环形数据缓冲区
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2-5 HadoopMapReduce&YARN-MR计算流程-MapTask-分区&排序
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2-6 HadoopMapReduce&YARN-MR计算流程-MapTask-溢写&合并
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2-7 HadoopMapReduce&YARN-MR计算流程-MapTask-组合器(可选)
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2-8 HadoopMapReduce&YARN-MR计算流程-ReduceTask-拉取&合并&分组&Reduce
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2-9 HadoopMapReduce&YARN-MR计算流程-ReduceTask-输出
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2-10 HadoopMapReduce&YARN-MR计算流程-Shuffle&总结
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