Big Data Technology & Architecture

Dec 6, 2021 · Big Data

Understanding Spark’s Memory Model: Unified Memory Management, On‑Heap and Off‑Heap Memory, and Configuration

This article explains Spark’s unified memory management model, detailing the division between on‑heap and off‑heap memory, the roles of execution, storage, user, and reserved memory, configuration parameters, dynamic allocation, and how these concepts affect performance and resource utilization.