Hive Architecture Explained | Hive Architecture Tutorial | Big Data Tutorial for Beginners

Hive Architecture Explained | Hive Architecture Tutorial | Big Data Tutorial for Beginners
https://acadgild.com/big-data/big-dat...

Hello and welcome to Hadoop tutorials powered by Acadgild. In this video, you will be able to understand the concepts of Hive Architecture.
User Interface (UI):
• The user interface for users to submit queries and other operations to the system
Eg: command line interface and a web-based GUI.
Driver
• The component which receives the queries
• This component implements the notion of session handles and provides execute and fetch APIs modeled on JDBC/ODBC interfaces
Compiler
• The component that parses the query, does semantic analysis on the different query blocks and query expressions and eventually generates an execution plan with help of the table and partition metadata looked up from the metastore.
Metastore
• The component that stores all the structure information of the various tables and partitions in the warehouse including column type information, the serializers, and deserializers necessary to read and write data and the corresponding HDFS files where the data is stored.
Execution Engine
• The component which executes the execution plan created by the compiler. The plan is a DAG of stages of the plan and execution engine manages the dependencies between these different stages of the plan and executes these stages on the appropriate system components.

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