Exception in thread "main" java.lang.NoClassDefFoundError: scala/Product$class
at org.apache.spark.SparkConf$DeprecatedConfig.<init>(SparkConf.scala:723)
at org.apache.spark.SparkConf$.<init>(SparkConf.scala:571)
at org.apache.spark.SparkConf$.<clinit>(SparkConf.scala)
at org.apache.spark.SparkConf.set(SparkConf.scala:92)
at org.apache.spark.SparkConf.set(SparkConf.scala:81)
at org.apache.spark.SparkConf.setMaster(SparkConf.scala:113)
at com.jesperdj.example.HelloScala$.main(HelloScala.scala:11)
at com.jesperdj.example.HelloScala.main(HelloScala.scala)
Caused by: java.lang.ClassNotFoundException: scala.Product$class
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 8 more
Given above is the error when running this code
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package com.jesperdj.example
import org.apache.spark._
import org.apache.spark.streaming.StreamingContext
import org.apache.spark.streaming.Seconds
import org.apache.spark.streaming.kafka.KafkaUtils
object HelloScala {
def main(args:Array[String])
{
val conf = new SparkConf().setMaster("local[*]").setAppName("KafkaReceiver");
val ssc = new StreamingContext(conf, Seconds(10))
val kafkaStream = KafkaUtils.createStream(ssc, "localhost:2181","spark-streaming-consumer-group", Map("KafkaStreaming" -> 5))
//need to change the topic name and the port number accordingly
kafkaStream.print() //prints the stream of data received
ssc.start()
ssc.awaitTermination()
}
}
--------------------------------------------------------------------------------------------------------
When running this scala program it causes exception.Below given is the pom file.
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>test</groupId>
<artifactId>spark-kafka</artifactId>
<version>1.0-SNAPSHOT</version>
<repositories>
<repository>
<id>hortonworks</id>
<name>hortonworks repo</name>
<url>http://repo.hortonworks.com/content/repositories/releases/</url>
</repository>
</repositories>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core -->
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.11</artifactId>
<version>2.2.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming-kafka -->
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming-kafka -->
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming-kafka_2.11</artifactId>
<version>1.4.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming -->
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-streaming -->
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming_2.11</artifactId>
<version>2.3.0</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.scala-lang/scala-library -->
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.11.4</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-xml</artifactId>
<version>2.11.0-M4</version>
</dependency>
</dependencies>
<build>
<defaultGoal>package</defaultGoal>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/test/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
<executions>
<execution>
<goals>
<goal>copy-resources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.2.0</version>
<configuration>
<recompileMode>incremental</recompileMode>
<args>
<arg>-target:jvm-1.7</arg>
</args>
<javacArgs>
<javacArg>-source</javacArg>
<javacArg>1.7</javacArg>
<javacArg>-target</javacArg>
<javacArg>1.7</javacArg>
</javacArgs>
</configuration>
<executions>
<execution>
<id>scala-compile</id>
<phase>process-resources</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</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>
</execution>
</executions>
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<finalName>uber-${project.artifactId}-${project.version}</finalName>
</configuration>
</plugin>
</plugins>
</build>
</project>
Can anyone help to figure this out?
