Details
Description
In the current distribution the RPMs land the file "/usr/lib/hadoop/hadoop-common-2.0.0-cdh4.0.0-tests.jar". This is not ideal because for one we don't need any test jars present but also the JarFinder class in the jar will cause issues with submitted M/R to YARN. The issue manifests because the JarFinder tries to create a new jar and then throws an error due to duplicate MANIFEST.MF files.
Unless there is a valid reason for it to be present this jar should just be removed.