2020年3月5日——sparkstreaming黑名单过滤

nc -lk 6789
输入数据：
20180808,zs
20180808,ls
20180808,ww

package org.apache.spark.examples.streaming

import org.apache.spark.SparkConf
import org.apache.spark.streaming.{Seconds, StreamingContext}

/**
 * 黑名单过滤
 */



object TransformApp {
  def main(args: Array[String]): Unit = {

    val sparkConf = new SparkConf().setMaster("local[2]").setAppName("NetworkWordCount")

    /**
     * 创建StreamingContext需要两个参数：SparkConf和batch interval
     */
    val ssc = new StreamingContext(sparkConf, Seconds(5))


    /**
     * 构建黑名单
     */
    val blacks = List("zs", "ls")
    val blacksRDD = ssc.sparkContext.parallelize(blacks).map(x => (x, true))

    val lines = ssc.socketTextStream("localhost", 6789)
    val clicklog = lines.map(x => (x.split(",")(1), x)).transform(rdd => {
      rdd.leftOuterJoin(blacksRDD)
        .filter(x=> x._2._2.getOrElse(false) != true)
        .map(x=>x._2._1)
    })

    clicklog.print()

    ssc.start()
    ssc.awaitTermination()
  }
}