Desde la versión 2.0, Apache Spark se incluye con una carpeta "frascos" llena de archivos .jar. Obviamente, Maven descargará todos estos frascos cuando emita:

mvn -e package

porque para enviar una solicitud con

spark-submit --class DataFetch target/DataFetch-1.0-SNAPSHOT.jar

elDataFetch-1.0-SNAPSHOT.jar es necesario

Entonces, la primera pregunta es sencilla, ¿cómo puedo aprovechar estos frascos existentes? La segunda pregunta está relacionada, hijo. Intenté la primera vez con Maven descargando los tarros, obtuve el siguiente resultado:

[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building "DataFetch" 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @DataFetch ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory     /root/sparkTests/scalaScripts/DataFetch/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) @ DataFetch -    --
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.5:testResources (default-testResources) @ DataFetch ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory/root/sparkTests/scalaScripts/DataFetch/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.0:testCompile (default-testCompile) @ DataFetch ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.10:test (default-test) @ DataFetch ---
[INFO] No tests to run.
[INFO] Surefire report directory: /root/sparkTests/scalaScripts/DataFetch/target/surefire-reports

-------------------------------------------------------
 T E S T S
-------------------------------------------------------

Results :

Tests run: 0, Failures: 0, Errors: 0, Skipped: 0

[INFO]
[INFO] --- maven-jar-plugin:2.3.2:jar (default-jar) @ DataFetch---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.294s
[INFO] Finished at: Wed Sep 28 17:41:29 PYT 2016
[INFO] Final Memory: 14M/71M
[INFO] ------------------------------------------------------------------------

Y aquí está mi archivo pom.xml

<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.spark.pg</groupId>
  <artifactId>DataFetch</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>
  <name>"DataFetch"</name>

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

    <dependencies>
        <dependency>
            <groupId>org.apache.spark</groupId>
            <artifactId>spark-core_2.11</artifactId>
            <version>2.0.0</version>
        </dependency>
    </dependencies>

     <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
            </plugin>
        </plugins>
    </build>  

</project>

Si necesita más información, no dude en solicitarla.