Apache Spark Certification Practice Test

The main program of a Spark application is referred to as the Driver. In a Spark application, the Driver is responsible for orchestrating the execution of tasks. It coordinates the distributed processing, manages the application's resources, and communicates with the Cluster Manager to allocate resources for these tasks.

The Driver contains the main function that defines the application's actions and transformations on data. It is the entry point for Spark applications and interacts with executors, which are worker processes that perform the actual computations. The Driver maintains information about the execution plan and the state of the application, ensuring that tasks are distributed efficiently across the cluster.

Understanding the role of the Driver clarifies how Spark manages distributed computing, which distinguishes it from other components, such as Executors, Nodes, and Cluster Managers, that serve separate functions within the Spark ecosystem.