Java spark在EMR上提交JAR时发生ClassNotFoundException

我正在使用eclipse/Maven创建一个JAR，并在EMR上运行它

这是我的pom.xml文件

<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>com.sudarshan</groupId>
    <artifactId>SparkApplication</artifactId>
    <version>SQL</version>
    <packaging>jar</packaging>

    <name>SparkApplication</name>
    <url>http://maven.apache.org</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <repositories>
        <repository>
            <id>cloudera</id>
            <url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
        </repository>
    </repositories>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.scala-lang</groupId>
            <artifactId>scala-library</artifactId>
            <version>2.11.1</version>
        </dependency>

        <!-- 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.hadoop/hadoop-client -->
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-client</artifactId>
            <version>2.7.3</version>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-common -->
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-common</artifactId>
            <version>2.7.3</version>
            <scope>provided</scope>
        </dependency>



    </dependencies>

    <build>
        <plugins>
            <!-- Maven Assembly Plugin -->
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>financialLineItem.FinancialLineItem</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase> <!-- packaging phase -->
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

当我在齐柏林飞艇笔记本中运行代码时，它运行良好，但在

spark submit

中，它抛出以下异常

Exception in thread "main" java.lang.ClassNotFoundException: financialLineItem.FinancialLineItem

我的项目设置如下所示：

如何纠正这一点

此外，我还按照以下文档创建spark并在EMR中提交

---

在这里，他们既没有在spark作业配置中设置主URL，也没有在spark提交时设置主URL，您的

pom.xml

中缺少

sourceDirectory

根据，默认的

sourceDirectory

是

src/main/java

，由于您的项目结构是

src/main/scala

，因此不会编译这些类

在生成配置下添加以下内容：

<build>    
    <sourceDirectory>src/main/scala</sourceDirectory>
    <testSourceDirectory>src/test/scala</testSourceDirectory>
    <finalName>Sample</finalName>
    <plugins>
        <plugin>
            <groupId>net.alchim31.maven</groupId>
            <artifactId>scala-maven-plugin</artifactId>
            <version>3.1.3</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>2.13</version>
            <configuration>
                <useFile>false</useFile>
                <disableXmlReport>true</disableXmlReport>
                <!-- If you have classpath issue like NoDefClassError,... -->
                <!-- useManifestOnlyJar>false</useManifestOnlyJar -->
                <includes>
                    <include>**/*Test.*</include>
                    <include>**/*Suite.*</include>
                </includes>
            </configuration>
        </plugin>
        <!-- 
        Maven Assembly Plugin
        -->
    </plugins>
</build>

src/main/scala
src/test/scala
样品
net.alchim31.maven
scala maven插件
3.1.3
编译
测试编译
-make：及物的
-从属文件
${project.build.directory}/.scala\u依赖项
org.apache.maven.plugins
maven surefire插件
2.13
假的
真的
**/*测试*
**/*套房*

在群集模式下运行spark submit时，会发生的情况是驱动程序运行在与客户端不同的机器上，因此您在spark submit脚本中提供的jar需要放置在驱动程序的类路径上，如下所示：-

--driver-class-path s3://path/SparkApplication-SQL-jar-with-dependencies.jar

因此，您可以按如下方式尝试以下脚本：

spark-submit --deploy-mode cluster --class financialLineItem.FinancialLineItem --driver-class-path s3://path/SparkApplication-SQL-jar-with-dependencies.jar

spark-submit --deploy-mode cluster --class financialLineItem.FinancialLineItem --driver-class-path s3://path/SparkApplication-SQL-jar-with-dependencies.jar