import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaPairRDD;import org.apache.spark.api.java.JavaSparkContext;import scala.Tuple2;import java.util.Arrays;import java.util.List;import java.util.Map; /** * countbykey 算子: * 只能用在(K,V)结…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.VoidFunction;import java.util.Arrays;import java.util.List; /** * union 算子: * 取两个RD…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext; import java.util.Arrays;import java.util.List; /** * sampleTake 算子: * 先 sample 再 take * 第一个参数:是否可以重复 * 第二个参数:返回take(n) * 第三个…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.Function; import java.util.Arrays;import java.util.List; /** * saveastextfile 算子: *…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.Function2;import org.apache.spark.api.java.function.VoidFunction; import java.util.…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.Function2;import org.apache.spark.api.java.function.VoidFunction; import java.util.…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.Function;import org.apache.spark.api.java.function.VoidFunction; import java.util.A…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.VoidFunction; import java.util.Arrays;import java.util.List; /** * intersection 算子:…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext; import java.util.Arrays;import java.util.List; /** * frist 算子: * * 取RDD的第一个元素 * */public class FristOperator { public static…

import org.apache.spark.SparkConf;import org.apache.spark.api.java.JavaRDD;import org.apache.spark.api.java.JavaSparkContext;import org.apache.spark.api.java.function.FlatMapFunction;import org.apache.spark.api.java.function.VoidFunction;import java.…