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Spark RDD/Core 编程 API入门系列之rdd实战（rdd基本操作实战及transformation和action流程图）（源码）（三）

本博文的主要内容是： 1、rdd基本操作实战 2、transformation和action流程图 3、典型的transformation和action RDD有3种操作： 1、 Trandformation ...

Spark RDD/Core 编程 API入门系列之动手实战和调试Spark文件操作、动手实战操作搜狗日志文件、搜狗日志文件深入实战（二）

1、动手实战和调试Spark文件操作　　这里，我以指定executor-memory参数的方式，启动spark-shell。启动hadoop集群 spark@SparkSingleNode:/usr/local/hadoop/hadoop-2.6.0$ jps 845...

Spark RDD/Core 编程 API入门系列之rdd案例（map、filter、flatMap、groupByKey、reduceByKey、join、cogroupy等）（四）

声明：　　大数据中，最重要的算子操作是：join !!! 典型的transformation和action val nums = sc.parallelize(1 to 10...

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