Submitting Jobs and Applications to the Cluster

You can submit YARN applications (MapReduce version 2 and other applications that run on YARN) to the same cluster. An application can be submitted to the cluster in the following ways:

• The hadoop jar command submits an MRv2 application.
• The yarn jar command submits an application.
• An external application submits an application.
• An ecosystem component generates and submits an application.
• The hadoop job command submits an MRv2 application.
• The mapred job command submits an MRv2 application.

When you submit a non-MapReduce application to the cluster, such a Spark application, it is automatically processed using yarn mode (ResourceManager, NodeManager, and MapReduce ApplicationMaster).