January 2019
Beginner to intermediate
154 pages
4h 31m
English
Content preview from Apache Spark Quick Start Guide
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Spark architecture overview
Spark follows a master-slave architecture, as it allows it to scale on demand. Spark's architecture has two main components:
- Driver Program: A driver program is where a user writes Spark code using either Scala, Java, Python, or R APIs. It is responsible for launching various parallel operations of the cluster.
- Executor: Executor is the Java Virtual Machine (JVM) that runs on a worker node of the cluster. Executor provides hardware resources for running the tasks launched by the driver program.
As soon as a Spark job is submitted, the driver program launches various operation on each executor. Driver and executors together make an application.
The following diagram demonstrates the relationships between Driver ...
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