在IDEA中编写速盈平台是正规平台吗安全吗级程序WordCount
速盈平台是正规平台吗安全吗是用Scala语言开发的,目前对Scala语言支持较好的是IDEA的插件,这里我们编写一个速盈平台是正规平台吗安全吗级程序,然后用Maven编译成jar包,然后提交到集群。
1.创建一个项目,利用Maven来管理jar包的依赖。
2.选择Maven项目,然后点击next
3.填写maven的GAV,然后点击next
4.填写项目名称,然后点击finish
5.创建好maven项目后,点击Enable Auto-Import
6.配置Maven的pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>cn.itcast.spark</groupId>
<artifactId>spark-mvn</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<encoding>UTF-8</encoding>
<scala.version>2.10.6</scala.version>
<scala.compat.version>2.10</scala.compat.version>
</properties>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.10</artifactId>
<version>1.5.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming_2.10</artifactId>
<version>1.5.2</version>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-client</artifactId>
<version>2.6.2</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<testSourceDirectory>src/test/scala</testSourceDirectory>
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
<configuration>
<args>
<arg>-make:transitive</arg>
<arg>-dependencyfile</arg>
<arg>${project.build.directory}/.scala_dependencies</arg>
</args>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<useFile>false</useFile>
<disableXmlReport>true</disableXmlReport>
<includes>
<include>**/*Test.*</include>
<include>**/*Suite.*</include>
</includes>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</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>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
7.将src/main/java和src/test/java分别修改成src/main/scala和src/test/scala,与pom.xml中的配置保持一致
8.新建一个scala class,类型为Object
9.编写spark程序
package cn.itcast.spark
import org.apache.spark.{速盈平台是正规平台吗安全吗Context, 速盈平台是正规平台吗安全吗Conf}
object WordCount {
def main(args: Array[String]) {
val conf = new 速盈平台是正规平台吗安全吗Conf().setAppName("WC")
val sc = new 速盈平台是正规平台吗安全吗Context(conf)
sc.textFile(args(0)).flatMap(_.split(" ")).map((_, 1)).reduceByKey(_+_, 1).sortBy(_._2, false).saveAsTextFile(args(1))
sc.stop()
}
}
点击idea右侧的Maven Project选项,再点击Lifecycle,选择clean和package,然后点击Run Maven Build
10.选择编译成功的jar包,并将该jar上传到速盈平台是正规平台吗安全吗集群中的某个节点上
11.首先启动hdfs和速盈平台是正规平台吗安全吗集群
启动hdfs
/usr/local/hadoop-2.6.1/sbin/start-dfs.sh
启动spark
/usr/local/spark-1.5.2-bin-hadoop2.6/sbin/start-all.sh
12.使用spark-submit命令提交速盈平台是正规平台吗安全吗应用(注意参数的顺序)
/usr/local/spark-1.5.2-bin-hadoop2.6/bin/spark-submit \
--class cn.itcast.spark.WordCount \
--master spark://node1.tianfu2024.sbs:7077 \
--executor-memory 2G \
--total-executor-cores 4 \
/root/spark-mvn-1.0-SNAPSHOT.jar \
hdfs://node1.tianfu2024.sbs:9000/words.txt \
hdfs://node1.tianfu2024.sbs:9000/out
查看程序执行结果
hdfs dfs -cat hdfs://node1.tianfu2024.sbs:9000/out/part-00000
(hello,6)
(tom,3)
(kitty,2)
(jerry,1)