23 SparkStreaming案例1

0 Strom VS SparkStreaming

1. Storm 是一个纯实时的流式处理框，SparkStreaming 是一个准实时的流式处理框架，（微批处理：可以设置时间间隔）
1. SparkStreaming 的吞吐量比 Storm 高
1. Storm 的事务机制要比 SparkStreaming 好（每个数据只处理一次）
1. Storm 支持动态资源调度
1. SparkStreaming 的应用程序中可以写 SQL 语句来处理数据，所以 SparkingStreaming 擅
长复杂的业务处理，而 Storm 不擅长复杂的业务处理，它擅长简单的汇总型计算（天猫双十一销量）

1 SparkStreaming 执行流程

总结：
receiver task 是 7*24h 一直在执行，一直接收数据，将接收到的数据保存到 batch 中，假设 batch interval 为 5s，
那么把接收到的数据每隔 5s 切割到一个 batch，因为 batch 是没有分布式计算的特性的，而 RDD 有，
所以把 batch 封装到 RDD 中，又把 RDD 封装到DStream 中进行计算，在第 5s 的时候，计算前 5s 的数据，
假设计算 5s 的数据只需要 3s，那么第 5-8s 一边计算任务，一边接收数据，第 9-11s 只是接收数据，然后在第 10s 的时
候，循环上面的操作。如果 job 执行时间大于 batch interval，那么未执行的数据会越攒越多，最终导致 Spark集群崩溃。

2demo 监听端口案例

使用nc -lk 9999监控9999端口
启动sparkshell测试/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-shell --master local[2]
输入以下代码测试

import org.apache.spark.SparkConf
import org.apache.spark.streaming.{Seconds, StreamingContext}
val ssc = new StreamingContext(sc,Seconds(10))
val lines = ssc.socketTextStream("localhost", 9999)
val words = lines.flatMap(_.split(" "))
val pairs = words.map(word => (word, 1))
val wordCounts = pairs.reduceByKey(_ + _)
wordCounts.print()
ssc.start()
ssc.awaitTermination()

在监听端口中输入一些数据看到测试结果

3.1demo 监听hdfs案例(使用jar包方式)

服务器船舰world.txt文件

hadoop java
java scala
python spark

编写WorldCountStreaming.scala

package com.tzy.streaming

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

object WorldCountStreaming {
  def main(args: Array[String]): Unit = {
    val conf = new SparkConf().setAppName("StreamingWorldCount")
    val ssc = new StreamingContext(conf,Seconds(10))
    //监控hdfs上的data目录
    val lines = ssc.textFileStream("hdfs://master:9000/data/")
    val words = lines.flatMap(_.split(" "))
    val pairs = words.map(word => (word, 1))
    val wordCounts = pairs.reduceByKey(_ + _)
    wordCounts.print()
    ssc.start()
    ssc.awaitTermination()
  }
}

上传服务器
启动/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit --master local[2] --class com.tzy.streaming.WorldCountStreaming news-1.0-SNAPSHOT.jar
上传测试

hadoop fs -put world.txt /data/1
hadoop fs -put world.txt /data/2
hadoop fs -put world.txt /data/3

3.2demo 监听hdfs案例(使用SparkShell加载scala脚本)

也可以直接使用scala文件进行测试,编写WorldCountStreaming.scala文件

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

val ssc = new StreamingContext(sc,Seconds(10))
val lines = ssc.textFileStream("hdfs://master:9000/data/")

val words = lines.flatMap(_.split(" "))
val pairs = words.map(word => (word, 1))
val wordCounts = pairs.reduceByKey(_ + _)
wordCounts.print()

ssc.start()
ssc.awaitTermination()

进如sparkshell命令/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-shell --master local[2]
加载scala文件:load /root/test_spark/WorldCountStreaming.scala
测试hadoop fs -put world.txt /data/4

3.3demo 监听hdfs并保存在hdfs案例(使用SparkShell加载scala脚本)

编写SaveWorldCountStreaming.scala文件

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

val ssc = new StreamingContext(sc,Seconds(10))
val lines = ssc.textFileStream("hdfs://master:9000/data/")

val words = lines.flatMap(_.split(" "))
val pairs = words.map(word => (word, 1))
val wordCounts = pairs.reduceByKey(_ + _)
//同3.2案例修改的这一句
wordCounts.saveAsTextFiles("hdfs://master:9000/data/output/")

ssc.start()
ssc.awaitTermination()

使用nc -lk 9999监控9999端口
进如sparkshell命令/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-shell --master local[2]
加载scala文件:load /root/test_spark/SaveWorldCountStreaming.scala
在监控端测试

4.1demo spark-flume(push)

官网

Source --> Channel --->Sink(Spark Streaming)
进入flume配置目录cd /usr/local/src/apache-flume-1.6.0-bin/conf
vim flume_push_streaming.conf编写配置文件

#flume->push->streaming
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
#file control
#a1.sources.r1.type = exec
#a1.sources.r1.command = tail -f /opt/datas/spark_flume/wctotal.log
#a1.sources.r1.shell = /bin/bash -c
#port control 
a1.sources.r1.type = netcat
a1.sources.r1.bind = master
a1.sources.r1.port = 44444

# Describe the sink
a1.sinks.k1.type = avro
#window测试192.168.88.1集群测试master
a1.sinks.k1.hostname = 192.168.88.1
a1.sinks.k1.port = 41414

# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000000
a1.channels.c1.transactionCapacity = 1000

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

编写StreamingFlume.scala

package com.sparkdemo.streaming

import org.apache.spark.SparkConf
import org.apache.spark.storage.StorageLevel
import org.apache.spark.streaming.flume.FlumeUtils
import org.apache.spark.streaming.{Seconds, StreamingContext}

object FlumePushWorldCount {
  def main(args: Array[String]): Unit = {
    if (args.length != 2) {
      System.err.println("Usage: FlumePushWorldCount <hostname> <name>")
      System.exit(1)
    }

    val Array(hostname, port) = args

    val conf = new SparkConf().setAppName("FlumePushWorldCount").setMaster("local[2]")
    val ssc = new StreamingContext(conf, Seconds(10))
    //监控flume上配置的机器和端口---集群测试使用master
    val flumeStream = FlumeUtils.createStream(ssc, hostname, port.toInt, StorageLevel.MEMORY_ONLY_SER_2)
    //通过事件拿到主体内容
    flumeStream.map(x => new String(x.event.getBody.array()).trim)
      .flatMap(_.split(" ")).map((_, 1)).reduceByKey(_ + _).print()

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

本地测试（修改flume发送的机器）启动本地sparkstreaming程序,注意官网提示必须先启动sparkstreaming

配置参数
现在sparkstreaming已经在跑了
启动flume

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/flume_push_streaming.conf \
-Dflume.root.logger=DEBUG,console

启动端口传输telnet master 44444

集群测试生产无网需要(将spark-streaming-flume_2.10-1.6.0.jar一起上传其他两个包在flume里有)

去掉图中代码
打包上传
启动streaming(注意packages 需要联网)

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--master local[2] \
--packages org.apache.spark:spark-streaming-flume_2.10:1.6.0 \
--class com.sparkdemo.streaming.FlumePushWorldCount \
sparkdemo-1.0-SNAPSHOT.jar \
master 41414

修改flume配置文件
启动flume

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/flume_push_streaming.conf \
-Dflume.root.logger=DEBUG,console

telnet连接测试telnet master 44444

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--master local[2] \
--jars spark-streaming-flume_2.10-1.6.0.jar,\
/usr/local/src/apache-flume-1.6.0-bin/lib/flume-avro-source-1.6.0.jar,\
/usr/local/src/apache-flume-1.6.0-bin/lib/flume-ng-sdk-1.6.0.jar \
--class com.sparkdemo.streaming.FlumePushWorldCount \
sparkdemo-1.0-SNAPSHOT.jar \
master 41414

4.2demo spark-flume(pull)

vim flume_pull_streaming.conf编写配置文件

#flume->pull->streaming
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# Describe/configure the source
#file control
#a1.sources.r1.type = exec
#a1.sources.r1.command = tail -f /opt/datas/spark_flume/wctotal.log
#a1.sources.r1.shell = /bin/bash -c
#port control 
a1.sources.r1.type = netcat
a1.sources.r1.bind = master
a1.sources.r1.port = 44444

# Describe the sink
a1.sinks.k1.type = org.apache.spark.streaming.flume.sink.SparkSink
#window测试192.168.88.1集群测试master
a1.sinks.k1.hostname = master
a1.sinks.k1.port = 41414

# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000000
a1.channels.c1.transactionCapacity = 1000

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

编写FlumePullWorldCount.java

package com.sparkdemo.streaming

import org.apache.spark.SparkConf
import org.apache.spark.storage.StorageLevel
import org.apache.spark.streaming.flume.FlumeUtils
import org.apache.spark.streaming.{Seconds, StreamingContext}

object FlumePullWorldCount {
  def main(args: Array[String]): Unit = {
    if (args.length != 2) {
      System.err.println("Usage: FlumePullWorldCount <hostname> <name>")
      System.exit(1)
    }

    val Array(hostname, port) = args

    val conf = new SparkConf()//.setAppName("FlumePullWorldCount").setMaster("local[2]")
    val ssc = new StreamingContext(conf, Seconds(10))
    //监控flume上配置的机器和端口---集群测试使用master
    val flumeStream = FlumeUtils.createPollingStream(ssc, hostname, port.toInt, StorageLevel.MEMORY_ONLY_SER_2)
    //通过事件拿到主体内容
    flumeStream.map(x => new String(x.event.getBody.array()).trim)
      .flatMap(_.split(" ")).map((_, 1)).reduceByKey(_ + _).print()

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

集群测试

去掉图中代码
打包上传
启动flume(先启动flume)

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/flume_pull_streaming.conf \
-Dflume.root.logger=DEBUG,console

报错

org.apache.flume.FlumeException: Unable to load sink type: org.apache.spark.streaming.flume.sink.SparkSink, class: org.apache.spark.streaming.flume.sink.SparkSink
  at org.apache.flume.sink.DefaultSinkFactory.getClass(DefaultSinkFactory.java:71)
  at org.apache.flume.sink.DefaultSinkFactory.create(DefaultSinkFactory.java:43)
  at org.apache.flume.node.AbstractConfigurationProvider.loadSinks(AbstractConfigurationProvider.java:410)
  at org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:98)
  at org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:140)
  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.apache.spark.streaming.flume.sink.SparkSink
  at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
  at java.lang.Class.forName0(Native Method)
  at java.lang.Class.forName(Class.java:264)
  at org.apache.flume.sink.DefaultSinkFactory.getClass(DefaultSinkFactory.java:69)
  ... 11 more

解决：将如下jar包复制到flume的lib目录
启动streaming(注意packages 需要联网)

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--master local[2] \
--packages org.apache.spark:spark-streaming-flume_2.10:1.6.0 \
--class com.sparkdemo.streaming.FlumePullWorldCount \
sparkdemo-1.0-SNAPSHOT.jar \
master 41414

telnet连接测试telnet master 44444

5.1demo SparkStreaming-kafka(Receiver)

5.1.1kafka验证

创建一个topic

/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --create --zookeeper master:2181 --replication-factor 1 --partitions 1 --topic kafka_streaming_topic

查看topic/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --list --zookeeper master:2181
生产/usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-producer.sh --broker-list master:9092 --topic kafka_streaming_topic
消费/usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-consumer.sh --zookeeper master:2181 --topic kafka_streaming_topic
删除

/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --delete --zookeeper master:2181,slave1:2181,slave2:2181 --topic kafka_streaming_topic

查看描述

/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --zookeeper master:2181,slave1:2181,slave2:2181 --describe --topic kafka_streaming_topic

5.1.2SparkStreaming连接kafka

编写KafkaReceiverWorldCount.scala

package com.sparkdemo.streaming

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

object KafkaReceiverWorldCount {
  def main(args: Array[String]): Unit = {
    if (args.length != 4) {
      System.err.println("Usage: KafkaReceiverWorldCount <zkQuorum> <group> <topics> <numThreads>")
      System.exit(1)
    }
    val Array(zkQuorum, group, topics, numThreads) = args

    val conf = new SparkConf().setAppName("KafkaReceiverWorldCount").setMaster("local[2]")
    val ssc = new StreamingContext(conf, Seconds(10))

    val topicMap = topics.split(",").map((_, numThreads.toInt)).toMap

    //Streaming对接kafka
    val messages = KafkaUtils.createStream(ssc, zkQuorum, group, topicMap)

    messages.map(_._2).flatMap(_.split(" ")).map((_, 1)).reduceByKey(_ + _).print()

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

本地测试
- 创建生产者生产数据
  /usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-producer.sh --broker-list master:9092 --topic kafka_streaming_topic

集群测试生产环境提交代码（无网）

去掉
打包上传
提交spark作业(需有网络)

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--class com.sparkdemo.streaming.KafkaReceiverWorldCount \
--master local[2] \
--name KafkaReceiverWorldCount \
--packages org.apache.spark:spark-streaming-kafka_2.10:1.6.0 \
sparkdemo-1.0-SNAPSHOT.jar \
master:2181 test kafka_streaming_topic 1

创建生产者生产数据
/usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-producer.sh --broker-list master:9092 --topic kafka_streaming_topic

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--class com.sparkdemo.streaming.KafkaReceiverWorldCount \
--master local[2] \
--name KafkaReceiverWorldCount \
--jars /root/.ivy2/jars/org.apache.spark_spark-streaming-kafka_2.10-1.6.0.jar,\
/root/.ivy2/jars/org.apache.kafka_kafka_2.10-0.8.2.1.jar,\
/root/.ivy2/jars/org.apache.kafka_kafka-clients-0.8.2.1.jar,\
/root/.ivy2/jars/com.101tec_zkclient-0.3.jar,\
/root/.ivy2/jars/com.yammer.metrics_metrics-core-2.2.0.jar \
sparkdemo-1.0-SNAPSHOT.jar \
master:2181 test kafka_streaming_topic 1

5.2demo SparkStreaming-kafka(Direct Approach)

编写KafkaReceiverWorldCount.scala

package com.sparkdemo.streaming

import kafka.serializer.StringDecoder
import org.apache.spark.SparkConf
import org.apache.spark.streaming.kafka.KafkaUtils
import org.apache.spark.streaming.{Seconds, StreamingContext}

object KafkaDirectWorldCount {
  def main(args: Array[String]): Unit = {
    if (args.length != 2) {
      System.err.println("Usage: KafkaDirectWorldCount <brokers> <topics>")
      System.exit(1)
    }
    val Array(brokers, topics) = args

    val conf = new SparkConf()
    //.setAppName("KafkaReceiverWorldCount").setMaster("local[2]")
    val ssc = new StreamingContext(conf, Seconds(10))

    val topicsSet = topics.split(",").toSet
    val kafkaParams = Map[String, String]("metadata.broker.list" -> brokers)

    //Streaming对接kafka
    val messages = KafkaUtils.createDirectStream[String,String,StringDecoder,StringDecoder](ssc,kafkaParams,topicsSet)

    messages.map(_._2).flatMap(_.split(" ")).map((_, 1)).reduceByKey(_ + _).print()

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

集群测试

打包上传
提交spark作业(需有网络)

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--class com.sparkdemo.streaming.KafkaDirectWorldCount \
--master local[2] \
--name KafkaReceiverWorldCount \
--packages org.apache.spark:spark-streaming-kafka_2.10:1.6.0 \
sparkdemo-1.0-SNAPSHOT.jar \
master:9092 kafka_streaming_topic

创建生产者生产数据
/usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-producer.sh --broker-list master:9092 --topic kafka_streaming_topic

6 Log + Flume + Kafka + SparkStreaming

6.1 Log + Flume对接

6.1.1编写LoggerGenerator.java类

package com.sparkdemo.log;

import org.apache.log4j.Logger;

public class LoggerGenerator {
    private static Logger logger = Logger.getLogger(LoggerGenerator.class.getName());

    public static void main(String[] args) throws InterruptedException {
        int index = 0;
        while (true) {
            Thread.sleep(1000);
            logger.info("Value: " + index++);
        }
    }
}

6.1.2编写log4j.properties日志文件

log4j.rootLogger=INFO,stdout,debug,error,flume

#输出到控制台
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %p [%t] %C.%M(%L) | %m%n

#输出到flume
log4j.appender.flume = org.apache.flume.clients.log4jappender.Log4jAppender
log4j.appender.flume.Hostname = master
log4j.appender.flume.Port = 41414
log4j.appender.flume.UnsafeMode = true

6.1.3集群上flume中编写log_flume_streaming.conf日志文件

#log-->flume
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# define source
a1.sources.r1.type = avro
a1.sources.r1.bind = 0.0.0.0
a1.sources.r1.port = 41414

# define sink
a1.sinks.k1.type = logger

# define channel
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000000
a1.channels.c1.transactionCapacity = 1000

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

6.1.4启动Flume

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/log_flume_streaming.conf \
-Dflume.root.logger=INFO,console

6.1.5启动java程序(验证对接是否成功)

6.2 Log + Flume对接基础上 + Kafka

6.2.1新建flume配置文件log_flume_streaming.conf

#log-->flume-->kafka
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# define source
a1.sources.r1.type = avro
a1.sources.r1.bind = 0.0.0.0
a1.sources.r1.port = 41414

# define sink
a1.sinks.k1.type = org.apache.flume.sink.kafka.KafkaSink
a1.sinks.k1.topic = streamingtopic
a1.sinks.k1.brokerList = master:9092
a1.sinks.k1.requiredAcks = 1
a1.sinks.k1.batchSize = 20

# define channel
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000000
a1.channels.c1.transactionCapacity = 1000

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1

6.2.2启动Flume

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/log_flume_streaming2.conf \
-Dflume.root.logger=INFO,console

6.2.3创建启动kafka消费端（上面相当于日志写到flume里，然后通过sink写到kafka的生产者里）

- 创建topic
/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --create --zookeeper master:2181 --replication-factor 1 --partitions 1 --topic streamingtopic
- 查看topic
/usr/local/src/kafka_2.11-1.1.1/bin/kafka-topics.sh --list --zookeeper master:2181
- 启动消费端
/usr/local/src/kafka_2.11-1.1.1/bin/kafka-console-consumer.sh --zookeeper master:2181 --topic streamingtopic

6.2.4启动java类(从中可以发现20个为一个批次输出，如果关闭程序，会将剩下结果输出-->因为flume中设置了batchSize=20)

6.3 Log + Flume + Kafka对接基础上 + SparkStreaming

6.3.1编写KafkaStreamingApp.scala(Receiver模式)

package com.sparkdemo.streaming

import org.apache.spark.SparkConf
import org.apache.spark.streaming.dstream.DStream
import org.apache.spark.streaming.kafka.KafkaUtils
import org.apache.spark.streaming.{Seconds, StreamingContext}

object KafkaStreamingApp {
  def main(args: Array[String]): Unit = {
    if (args.length != 4) {
      System.err.println("Usage: KafkaStreamingApp <zkQuorum> <group> <topics> <numThreads>")
      System.exit(1)
    }
    val Array(zkQuorum, group, topics, numThreads) = args

    val conf = new SparkConf().setAppName("KafkaStreamingApp").setMaster("local[2]")
    val ssc = new StreamingContext(conf, Seconds(10))

    val topicMap = topics.split(",").map((_, numThreads.toInt)).toMap

    //Streaming对接kafka
    val messages = KafkaUtils.createStream(ssc, zkQuorum, group, topicMap)

    messages.map(_._2).filter(_.contains("Value")).print()

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

6.3.2启动flume

/usr/local/src/apache-flume-1.6.0-bin/bin/flume-ng agent \
--name a1 \
--conf /usr/local/src/apache-flume-1.6.0-bin/conf \
--conf-file /usr/local/src/apache-flume-1.6.0-bin/conf/log_flume_streaming2.conf \
-Dflume.root.logger=INFO,console

6.3.3启动LoggerGenerator类和KafkaStreamingApp类(观察测试结果)
6.3.4集群测试，打包上传服务器,确认flume是否启动。

java -jar sparkdemo-1.0-SNAPSHOT-jar-with-dependencies.jar

/usr/local/src/spark-1.6.0-bin-hadoop2.6/bin/spark-submit \
--master local[2] \
--name KafkaStreamingApp \
--packages org.apache.spark:spark-streaming-kafka_2.10:1.6.0 \
--class com.sparkdemo.streaming.KafkaStreamingApp \
sparkdemo-1.0-SNAPSHOT-jar-with-dependencies.jar \
master:2181 test streamingtopic 1

posted on 2019-07-19 14:58 农夫三拳有點疼阅读(21) 评论(0) 编辑收藏举报

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