Maven shade plugin with Kryo 3.0: ClassNotFoundException - maven

Question

I'm fairly new to Maven and I want to update a project from Kryo 2.22 to 3.0.1. In the project I've got the following dependency.
<dependency>
<groupId>com.esotericsoftware.kryo</groupId>
<artifactId>kryo</artifactId>
<version>2.22</version>
</dependency>
The project uses the Maven shade plugin to create a jar file:
<plugin>
<artifactId>maven-shade-plugin</artifactId>
<version>2.3</version>
<executions>
<execution>
<id>shade-gremlin-groovy</id>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
<artifactSet>
<includes>
<!-- As of Kryo 2.22, this artifact includes both minlog and reflectasm -->
<!-- If we upgrade to later a Kryo version, we may have to add includes
for minlog and reflectasm (this is true of 2.24.0, not sure about 3) -->
<include>com.esotericsoftware.kryo:*</include>
</includes>
</artifactSet>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>reflectasm-1.07-shaded.jar</exclude>
<exclude>minlog-1.2.jar</exclude>
<exclude>objenesis-1.2.jar</exclude>
<exclude>META-INF/MANIFEST.MF</exclude>
</excludes>
</filter>
</filters>
<relocations>
<relocation>
<pattern>com.esotericsoftware.kryo</pattern>
<shadedPattern>com.thinkaurelius.shaded.kryo_2_22</shadedPattern>
</relocation>
<relocation>
<pattern>com.esotericsoftware.minlog</pattern>
<shadedPattern>com.thinkaurelius.shaded.minlog_1_2</shadedPattern>
</relocation>
<relocation>
<pattern>com.esotericsoftware.reflectasm</pattern>
<shadedPattern>com.thinkaurelius.shaded.reflectasm_1_07</shadedPattern>
</relocation>
<relocation>
<pattern>com.esotericsoftware.shaded.org.objenesis</pattern>
<shadedPattern>com.thinkaurelius.shaded.objenesis_1_2</shadedPattern>
</relocation>
</relocations>
<!-- false below means the shade plugin overwrites the main project artifact (the one with no classifier).
false does *not* actually detach the main artifact, despite what the option name suggests. -->
<shadedArtifactAttached>false</shadedArtifactAttached>
<minimizeJar>false</minimizeJar>
</configuration>
</execution>
</executions>
</plugin>
However I cannot figure out what I should change except the groupId to: <groupId>com.esotericsoftware.kryo</groupId>
If I change the version number to 3.0.1 it cannot find the shaded classes (throws ClassNotfound exception:
java.lang.NoClassDefFoundError: com/thinkaurelius/shaded/kryo_3_0_1/kryo/Serializer
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)
at com.thinkaurelius.titan.graphdb.database.serialize.kryo.KryoSerializer.<init>(KryoSerializer.java:71)
at com.thinkaurelius.titan.graphdb.database.serialize.StandardSerializer.<init>(StandardSerializer.java:29)
at com.thinkaurelius.titan.graphdb.database.serialize.StandardSerializer.<init>(StandardSerializer.java:41)
at com.thinkaurelius.titan.diskstorage.configuration.backend.KCVSConfiguration.<init>(KCVSConfiguration.java:69)
at com.thinkaurelius.titan.diskstorage.configuration.backend.KCVSConfiguration.<init>(KCVSConfiguration.java:57)
at com.thinkaurelius.titan.diskstorage.configuration.KCVSConfigTest.getConfig(KCVSConfigTest.java:31)
I think the problem is that Kryo 2.22 has a different groupId (com.esotericsoftware.kryo) than Kryo 3.0.1 and that Maven cannot connect the dependency. How do I resolve this?

Answer 1

It appeared that the following line in the maven shade plugin:
<include>com.esotericsoftware.kryo:*</include>
had to be changed to:
<include>com.esotericsoftware:*</include>
Since the groupId is different. So the problem was a mismatch of a dependency.

Answer 2

From the maven repo search you linked to, it looks as though the dependency is in the maven central repository. However, the groupId has changed between 2.2.x and 3.x.
Have you tried with:
<dependency>
<groupId>com.esotericsoftware</groupId>
<artifactId>kryo</artifactId>
<version>3.0.1</version>
</dependency>
i.e. the same as you have, but without the trailing .kryo