@Kumar Veerappan
Your question caption asked about dependent components. Your question description asked about list of jobs that use spark currently. I assume that you mean you actually meant spark applications (AKA jobs) running on the cluster. If you have access to Ambari, you could click on Yarn link then on Quick Links and then on Resource Manager UI. That assumes your Spark runs over Yarn. Otherwise, you could go directly to Resource Manager UI. You would need to know the IP Address of the server where ResourceManager runs, as well as the port. Default is 8088.