FiofanS FiofanS - 1 month ago 6
Scala Question

java.lang.NoClassDefFoundError: com/typesafe/config/ConfigFactory when packaging Scala project with Maven

This question is a continuation of this thread.

The problem that I have refers to packaging Scala Spark project using Maven.

When I run this command:

spark-submit --name 28 --master local[2] --class org.test.consumer.TestRunner \
/usr/tests/test1/target/test_service-1.0-SNAPSHOT.jar \
$arg1 $arg2 $arg3 $arg4 $arg5


..., I get the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: com/typesafe/config/ConfigFactory
at org.test.consumer.kafka.KafkaConsumer.<init>(KafkaConsumer.scala:38)
at org.test.consumer.TestRunner$.main(TestRunner.scala:19)
at org.test.consumer.TestRunner.main(TestRunner.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:729)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:185)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:210)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:124)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: com.typesafe.config.ConfigFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more


This is my current
pom.xml
that considers the recommendations from the thread mentioned above (I checked that generated jar contains scala classes):

<?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>org.test.consumer</groupId>
<artifactId>test_service</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

<java.version>1.8</java.version>
<scala.version>2.11.8</scala.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-streaming_2.11</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-streaming-kafka_2.11</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-scala_2.11</artifactId>
<version>2.7.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.7.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.7.5</version>
</dependency>
<dependency>
<groupId>org.sedis</groupId>
<artifactId>sedis_2.11</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>com.lambdaworks</groupId>
<artifactId>jacks_2.11</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-sql_2.11</artifactId>
<version>1.6.2</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-mllib-local_2.11</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>com.github.nscala-time</groupId>
<artifactId>nscala-time_2.11</artifactId>
<version>2.12.0</version>
</dependency>
</dependencies>

<build>
<plugins>
<!-- Configure maven-compiler-plugin to use the desired Java version -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>

<!-- Use build-helper-maven-plugin to add Scala source and test source directories -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.10</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>src/main/scala</source>
</sources>
</configuration>
</execution>
<execution>
<id>add-test-source</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>src/test/scala</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>

<!-- Use scala-maven-plugin for Scala support -->
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.2.2</version>
<executions>
<execution>
<goals>
<!-- Need to specify this explicitly, otherwise plugin won't be called when doing e.g. mvn compile -->
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>

</project>

Answer

Add this to your pom.xml.

<dependency>
    <groupId>com.typesafe</groupId>
    <artifactId>config</artifactId>
    <version>1.3.1</version>
</dependency>

Note that you don't have to add this jar if it is already present.

Looks like the jar should be an executable jar with all your dependencies packaged within the jar file. You will have to use the maven assembly plugin to do that.

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>single</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <descriptorRefs>
            <descriptorRef>jar-with-dependencies</descriptorRef>
          </descriptorRefs>
          <archive>
            <manifest>
              <mainClass>org.sample.App</mainClass>    // put your main class here.
            </manifest>
          </archive>
        </configuration>
      </plugin>
    </plugins>
  </build>

This plugin will create an additional jar (apart from the regular jar) with the name appended with -jar-with-dependencies. Use this jar instead of using the original jar.