Minor Description
As mentioned here and found in with latest Jenkins shadedclient.
Jenkins does not provide a detailed output file for the failure though. But it can be reproed with the following cmd:
mvn verify -fae --batch-mode -am -pl hadoop-client-modules/hadoop-client-check-invariants -pl hadoop-client-modules/hadoop-client-check-test-invariants -pl hadoop-client-modules/hadoop-client-integration-tests -Dtest=NoUnitTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true -Dfindbugs.skip=true
Error Message:
[WARNING] objenesis-1.0.jar, mockito-all-1.8.5.jar define 30 overlapping classes: [WARNING] - org.objenesis.ObjenesisBase [WARNING] - org.objenesis.instantiator.gcj.GCJInstantiator [WARNING] - org.objenesis.ObjenesisHelper [WARNING] - org.objenesis.instantiator.jrockit.JRockitLegacyInstantiator [WARNING] - org.objenesis.instantiator.sun.SunReflectionFactoryInstantiator [WARNING] - org.objenesis.instantiator.ObjectInstantiator [WARNING] - org.objenesis.instantiator.gcj.GCJInstantiatorBase$DummyStream [WARNING] - org.objenesis.instantiator.basic.ObjectStreamClassInstantiator [WARNING] - org.objenesis.ObjenesisException [WARNING] - org.objenesis.Objenesis [WARNING] - 20 more... [WARNING] maven-shade-plugin has detected that some class files are [WARNING] present in two or more JARs. When this happens, only one [WARNING] single version of the class is copied to the uber jar. [WARNING] Usually this is not harmful and you can skip these warnings, [WARNING] otherwise try to manually exclude artifacts based on [WARNING] mvn dependency:tree -Ddetail=true and the above output. [WARNING] See [http://maven.apache.org/plugins/maven-shade-plugin/] [INFO] Replacing original artifact with shaded artifact.