【Spark】SparkStreaming与flume进行整合

文章目录

• 注意事项
• SparkStreaming从flume中poll数据
• 步骤
• 一、开发flume配置文件
• 二、启动flume
• 三、开发sparkStreaming代码
• 1.创建maven工程，导入jar包
• 2.开发代码
• 四、向监控目录中导入文本文件
• flume将数据push给SparkStreaming
• 步骤
• 一、开发flume配置文件
• 二、启动flume
• 三、开发代码
• 四、向监控目录中导入文本文件

---

注意事项

一、首先要保证安装了flume，flume相关安装文章可以看【Hadoop离线基础总结】日志采集框架Flume
二、把flume的lib目录下自带的过时的scala-library-2.10.5.jar包替换成scala-library-2.11.8.jar
三、下载需要的jar包，下载地址献上：https://repo1.maven.org/maven2/org/apache/spark/spark-streaming-flume_2.11/2.2.0/spark-streaming-flume_2.11-2.2.0.jar
并把jar包也放到flume的lib目录下

---

SparkStreaming从flume中poll数据

步骤

一、开发flume配置文件

在安装了flume的虚拟机执行以下操作命令

mkdir -p /export/servers/flume/flume-poll		//受监控的文件夹

cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/conf
vim flume-poll.conf

# 命名flume的各个组件
a1.sources = r1
a1.sinks = k1
a1.channels = c1

# 配置source组件
a1.sources.r1.channels = c1
a1.sources.r1.type = spooldir
a1.sources.r1.spoolDir = /export/servers/flume/flume-poll
a1.sources.r1.fileHeader = true

# 配置channel组件 选用memory channel
a1.channels.c1.type =memory
a1.channels.c1.capacity = 20000
a1.channels.c1.transactionCapacity=5000

# 配置sink组件
a1.sinks.k1.channel = c1
a1.sinks.k1.type = org.apache.spark.streaming.flume.sink.SparkSink
a1.sinks.k1.hostname=node03
a1.sinks.k1.port = 8888
a1.sinks.k1.batchSize= 2000

二、启动flume

cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/

bin/flume-ng agent -c conf -f conf/flume-poll.conf -n a1 -Dflume.root.logger=DEBUG,CONSOLE

三、开发sparkStreaming代码

1.创建maven工程，导入jar包

<properties>
    <scala.version>2.11.8</scala.version>
    <spark.version>2.2.0</spark.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-streaming-flume_2.11</artifactId>
        <version>2.2.0</version>
    </dependency>
    <dependency>
        <groupId>org.scala-lang</groupId>
        <artifactId>scala-library</artifactId>
        <version>${scala.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.11</artifactId>
        <version>${spark.version}</version>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_2.11</artifactId>
        <version>${spark.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming -->
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-streaming_2.11</artifactId>
        <version>2.2.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-client</artifactId>
        <version>2.7.5</version>
    </dependency>

    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-hive_2.11</artifactId>
        <version>2.2.0</version>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.38</version>
    </dependency>

</dependencies>
<build>
    <sourceDirectory>src/main/scala</sourceDirectory>
    <testSourceDirectory>src/test/scala</testSourceDirectory>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.0</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <encoding>UTF-8</encoding>
                <!--    <verbal>true</verbal>-->
            </configuration>
        </plugin>
        <plugin>
            <groupId>net.alchim31.maven</groupId>
            <artifactId>scala-maven-plugin</artifactId>
            <version>3.2.0</version>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                        <goal>testCompile</goal>
                    </goals>
                    <configuration>
                        <args>
                            <arg>-dependencyfile</arg>
                            <arg>${project.build.directory}/.scala_dependencies</arg>
                        </args>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.1.1</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <filters>
                            <filter>
                                <artifact>*:*</artifact>
                                <excludes>
                                    <exclude>META-INF/*.SF</exclude>
                                    <exclude>META-INF/*.DSA</exclude>
                                    <exclude>META-INF/*.RSA</exclude>
                                </excludes>
                            </filter>
                        </filters>
                        <transformers>
                            <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                <mainClass></mainClass>
                            </transformer>
                        </transformers>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

2.开发代码

import org.apache.spark.streaming.dstream.{DStream, ReceiverInputDStream}
import org.apache.spark.streaming.flume.{FlumeUtils, SparkFlumeEvent}
import org.apache.spark.streaming.{Seconds, StreamingContext}
import org.apache.spark.{SparkConf, SparkContext}

object SparkFlumePoll {

  // 定义updateFunc函数
  def updateFunc(newValues: Seq[Int],runningCount: Option[Int]): Option[Int] = {
    Option(newValues.sum + runningCount.getOrElse(0))
  }

  def main(args: Array[String]): Unit = {
    // 获取SparkConf
    val sparkConf: SparkConf = new SparkConf().set("spark.driver.host", "localhost").setAppName("SparkFlume-Poll").setMaster("local[6]")
    // 获取SparkContext
    val sparkContext = new SparkContext(sparkConf)
    // 设置日志级别
    sparkContext.setLogLevel("WARN")
    //获取StreamingContext
    val streamingContext = new StreamingContext(sparkContext, Seconds(5))
    streamingContext.checkpoint("./poll-Flume")

    // 通过FlumeUtils调用createPollingStream方法获取flume中的数据
    /*
    createPollingStream所需参数：
      ssc: StreamingContext,
      hostname: String,
      port: Int,
     */
    val stream: ReceiverInputDStream[SparkFlumeEvent] = FlumeUtils.createPollingStream(streamingContext, "node03", 8888)
    // 拿到数据后，所有的数据都会封装在SparkFlumeEvent中

    // 将SparkFlumeEvent封装的数据转换为DStream
    val line: DStream[String] = stream.map(x => {
      // x代表SparkFlumeEvent封装对象，里面封装了event数据，通过以下方法转换成数组
      val array: Array[Byte] = x.event.getBody.array()
      // 将拿到的数组转换为String
      val str = new String(array)
      str
    }
    )

    // 进行单词计数操作
    val value: DStream[(String, Int)] = line.flatMap(_.split(" ")).map((_, 1)).updateStateByKey(updateFunc)

    //输出结果
    value.print()

    streamingContext.start()
    streamingContext.awaitTermination()
  }
}

四、向监控目录中导入文本文件

控制台结果

-------------------------------------------
Time: 1586877095000 ms
-------------------------------------------

-------------------------------------------
Time: 1586877100000 ms
-------------------------------------------

20/04/14 23:11:44 WARN RandomBlockReplicationPolicy: Expecting 1 replicas with only 0 peer/s.
20/04/14 23:11:44 WARN BlockManager: Block input-0-1586877094060 replicated to only 0 peer(s) instead of 1 peers
-------------------------------------------
Time: 1586877105000 ms
-------------------------------------------
(world,1)
(hive,2)
(hello,2)
(sqoop,1)
(test,1)
(abb,1)

-------------------------------------------
Time: 1586877110000 ms
-------------------------------------------
(world,1)
(hive,2)
(hello,2)
(sqoop,1)
(test,1)
(abb,1)

-------------------------------------------
Time: 1586877115000 ms
-------------------------------------------
(world,1)
(hive,2)
(hello,2)
(sqoop,1)
(test,1)
(abb,1)

20/04/14 23:11:57 WARN RandomBlockReplicationPolicy: Expecting 1 replicas with only 0 peer/s.
20/04/14 23:11:57 WARN BlockManager: Block input-0-1586877094061 replicated to only 0 peer(s) instead of 1 peers
-------------------------------------------
Time: 1586877120000 ms
-------------------------------------------
(world,2)
(hive,4)
(hello,4)
(sqoop,2)
(test,2)
(abb,2)

-------------------------------------------
Time: 1586877125000 ms
-------------------------------------------
(world,2)
(hive,4)
(hello,4)
(sqoop,2)
(test,2)
(abb,2)

---

flume将数据push给SparkStreaming

步骤

一、开发flume配置文件

mkdir -p /export/servers/flume/flume-push/

cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/conf
vim flume-push.conf

#push mode
a1.sources = r1
a1.sinks = k1
a1.channels = c1
#source
a1.sources.r1.channels = c1
a1.sources.r1.type = spooldir
a1.sources.r1.spoolDir = /export/servers/flume/flume-push
a1.sources.r1.fileHeader = true
#channel
a1.channels.c1.type =memory
a1.channels.c1.capacity = 20000
a1.channels.c1.transactionCapacity=5000
#sinks
a1.sinks.k1.channel = c1
a1.sinks.k1.type = avro
#注意这里的ip需要指定的是我们spark程序所运行的服务器的ip，也就是我们的localhost
a1.sinks.k1.hostname=192.168.0.105
a1.sinks.k1.port = 8888
a1.sinks.k1.batchSize= 2000

二、启动flume

cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/

bin/flume-ng agent -c conf -f conf/flume-push.conf -n a1 -Dflume.root.logger=DEBUG,CONSOLE

三、开发代码

package cn.itcast.sparkstreaming.demo4

import org.apache.spark.streaming.dstream.{DStream, ReceiverInputDStream}
import org.apache.spark.streaming.flume.{FlumeUtils, SparkFlumeEvent}
import org.apache.spark.streaming.{Seconds, StreamingContext}
import org.apache.spark.{SparkConf, SparkContext}

object SparkFlumePush {
  def main(args: Array[String]): Unit = {
    //获取SparkConf
    val sparkConf: SparkConf = new SparkConf().setAppName("SparkFlume-Push").setMaster("local[6]").set("spark.driver.host", "localhost")
    //获取SparkContext
    val sparkContext = new SparkContext(sparkConf)
    sparkContext.setLogLevel("WARN")
    //获取StreamingContext
    val streamingContext = new StreamingContext(sparkContext, Seconds(5))

    val stream: ReceiverInputDStream[SparkFlumeEvent] = FlumeUtils.createStream(streamingContext, "192.168.0.105", 8888)

    val value: DStream[String] = stream.map(x => {
      val array: Array[Byte] = x.event.getBody.array()

      val str = new String(array)
      str
    })

    value.print()

    streamingContext.start()
    streamingContext.awaitTermination()
  }

}

四、向监控目录中导入文本文件

控制台结果

-------------------------------------------
Time: 1586882385000 ms
-------------------------------------------

20/04/15 00:39:45 WARN RandomBlockReplicationPolicy: Expecting 1 replicas with only 0 peer/s.
20/04/15 00:39:45 WARN BlockManager: Block input-0-1586882384800 replicated to only 0 peer(s) instead of 1 peers
-------------------------------------------
Time: 1586882390000 ms
-------------------------------------------
hello world
sqoop hive
abb test
hello hive

-------------------------------------------
Time: 1586882395000 ms
-------------------------------------------