Communicating within services in HDP

DLM App interacts with multiple services within HDP to process replication requests.

HS2: Hiveserver2 (Hive)
HMS: Hive Metastore Service (Hive)
NN: Namenode (HDFS)
DN: Datanode (HDFS)
RM: Resource Manager (YARN)
NM: Node Manager (YARN)
DLM App: Runs in Dataplane host as a docker container. DLM App hosts DLM UI and DLM App APIs.
DLM Engine: Agent service that runs in each HDP cluster, exposes REST APIs for DLM App.