The query engine is responsible for parsing all user commands, generating plans, delivering them to the corresponding executors, and returning result sets.
org.apache.iotdb.db.service.TSServiceImpl
IoTDB server-side RPC implementation, which directly interacts with the client.
org.apache.iotdb.db.qp.Planner
Parse SQL, generate logical plans, optimize logical plans, and generate physical plans.
org.apache.iotdb.db.qp.executor.PlanExecutor
Distribute the physical plan to the corresponding actuators, including the following four specific actuators.
org.apache.iotdb.db.query.dataset.*
The batch result set is returned to the client and contains part of the query logic.