Component
Component is a part of a service. For example, the HDFS service consists of the following components: Client, DataNode, JournalNode, HttpFS server, NameNode, and ZKFC. Breaking a service down into components makes it easier to work with the complicated cluster software. You can see the components of a service on the Components tab of the <Cluster name> → Services page.
The Components tab
The set of components depends on the bundle that is used to deploy a cluster. After the cluster is created and necessary services are added, you can choose components on the Mapping tab of the cluster page.
The Mapping tab
For detailed information about work with components in the ADCM UI, see Overview of the Clusters tab in the ADCM UI.