Hive Directed Acyclic Graph in Big Data Hadoop
Directed Acyclic Graph (DAG) is a tool that depicts the structure of basic blocks, helps to see the flow of values flowing among the basic blocks, and offers optimization too.
DAG provides easy transformation on basic blocks.
Leaf nodes represent identifiers, names or constants.
Interior nodes represent operators.
Interior nodes also represent the results of expressions or the identifiers/name where the values are to be stored or assigned.
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