HIVESERVER is an API that allows the clients (JDBC) to execute the queries on hive data warehouse and get the desired results. Under hive services driver, compiler and execution engine interact with each other and process the query.
The client submits the query via a GUI. The driver receives the queries in the first instance from GUI and it will define session handlers which will fetch required APIs that is designed with different interfaces like JDBC or ODBC. The compiler creates the plan for the job to be executed. Compiler in turn is in contact with matter and its gets metadata from Meta Store.
