Hello @Jared , The "ClassNotFoundException" means the JVM responsible for running the code has not found one of the required Java classes - which the code relies on. It's great that you have added those jars to your IntelliJ development environment, however that does not mean it will be available during runtime. One way would be to package all the dependencies in your jar, creating a so called "fat jar", however that is not recommended as with that your application will not be able to benefit from the future bugfixes which will be deployed in the cluster as the cluster is upgraded/patched. That would also have a risk that your application will fail after upgrades due to different class conflicts. The best way is to set up the running environment to have the needed classes. Hue / Java editor actually creates a one-time Oozie workflow with a single Java action in it, however it does not really give you flexibilty around customizing all the parts of this workflow and the running environment including what other jars you need to be shipped with the code. Since your code relies on SparkConf I assume it is actually a Spark based application. It would be a better option to create an Oozie workflow (you can also start from Hue > Apps > Scheduler > change Documents dropdown to Actions) with a Spark action. That will set up all the classpath needed for running Spark apps. That way you do not need to reference any Spark related jars, just the jar with your custom code. Hope this helps. Best regards Miklos
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