CODEWITHSUNDEEP
javamavenjdbc
drunkenfist
drunkenfist

Reputation: 3038

maven deployable jar "java.lang.ClassNotFoundException: org.apache.hadoop.hive.jdbc.HiveDriver" error

I have a deployable maven project where I'm trying to connect to a hive server using JDBC. This is my pom file:

<dependencies>
    <!-- https://mvnrepository.com/artifact/org.apache.hive/hive-jdbc -->
    <dependency>
        <groupId>org.apache.hive</groupId>
        <artifactId>hive-jdbc</artifactId>
        <version>2.1.1</version>
   </dependency>
</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <mainClass>com.test.Main</mainClass>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
    </plugins>
</build>

This generates a jar file which has a manifest.mf which is like this:

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Built-By: test
Class-Path: hive-jdbc-2.1.1.jar hive-common-2.1.1.jar ...
Created-By: Apache Maven 3.3.9
Build-Jdk: 1.8.0_72
Main-Class: com.test.Main

Now, when I try to run the jar file using java -jar test.jar, I get 

java.lang.ClassNotFoundException: org.apache.hadoop.hive.jdbc.HiveDriver
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)

Why do I get this exception even though the jar file is configured properly in the classpath of the manifest file?

Thanks.

Upvotes: 0

Views: 1435

Answers (3)

HbnKing
HbnKing

Reputation: 1882

Make Sure which jar (hive ) do you want .. because it has diferent versions
The old verison jar is

org.apache.hadoop.hive.jdbc.HiveDriver

here is the mvnrepository

and the newest jar is org.apache.hive.jdbc.HiveDriver here is the new settings

your mistakes is used the old dependency with the new jar name;

Upvotes: 0

Mike Adamenko
Mike Adamenko

Reputation: 3002

You can add maven-dependency-plugin to copy your dependencies from local or remote repositories to a specified location

<plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <version>2.4</version>
        <executions>
            <execution>
                <id>copy-dependencies</id>
                <phase>package</phase>
                <goals>
                    <goal>copy-dependencies</goal>
                </goals>
                <configuration>
                    <includeScope>compile</includeScope>
                    <outputDirectory>${project.build.directory}</outputDirectory>
                </configuration>
            </execution>
        </executions>
    </plugin>

or as another option use maven-assembly-plugin See here

Upvotes: 0

DrHopfen
DrHopfen

Reputation: 837

The jar referenced in the dependency seems not to be found by java. Probably is not located in the same folder as the target jar.

Depending on what you mean by deploayable maven project you have a couple of possible solutions

  • add the dependency to the classpath of the container
  • build a "fat" jar containing the dependency (using the maven shade or assembly plugin)

Upvotes: 2

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