The Apache Hadoop YARN service type in YARN's own terms: queues, decided at every queue of their path as YARN's own queue ACLs are, applications by name within a queue, and the cluster's administration, with YARN's submit and administer access types. Lookups go through Hadoop's own YARN client, on Hadoop's shaded client, with simple or Kerberos (keytab or password) authentication and ResourceManager high availability. Packaged as a plugin directory (descriptor, ...

Loads service type plugins: built-in ones from the classpath, external ones from the plugins directory, each in its own class loader

Spring Boot application that serves the REST API and the web console