Dec 3, 2020 in Hadoop
Q:

What are the different components of a Hive architecture?

1 Answer

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Dec 3, 2020

The different components of the Hive are:

User Interface: This calls the execute interface to the driver and creates a session for the query. Then, it sends the query to the compiler to generate an execution plan for it

Metastore: This stores the metadata information and sends it to the compiler for the execution of a query

Compiler: This generates the execution plan. It has a DAG of stages, where each stage is either a metadata operation, a map, or reduces a job or operation on HDFS

Execution Engine: This acts as a bridge between the Hive and Hadoop to process the query. Execution Engine communicates bidirectionally with Metastore to perform operations, such as create or drop tables. 

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