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Revision 3 as of 2018-06-09 03:38:34
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Spark VS Mapreduce
Spark
基于内存的计算
高性能要求
增加了Driver新组件
Client收到应用请求,首先会拉起Driver,主要是用于Spark的工作流程规划和TASK下发。
RDD算子
执行类的算子
逻辑操作类的算子