Apache Hadoop YARN
Apache Hadoop YARN (Yet Another Resource Negotiator) is a cluster resource management and job scheduling platform that is a core component of the Apache Hadoop ecosystem. It decouples resource management from data processing, allowing multiple data processing engines (like MapReduce, Spark, and Flink) to run on the same Hadoop cluster efficiently. YARN manages and allocates resources (CPU, memory) across cluster nodes, enabling scalable and multi-tenant big data applications.
Developers should learn and use YARN when building or operating large-scale, distributed data processing systems on Hadoop clusters, as it provides centralized resource management for improved cluster utilization and flexibility. It is essential for running diverse workloads (e.g., batch, interactive, streaming) concurrently, making it ideal for enterprises handling big data analytics, ETL pipelines, and machine learning tasks in multi-user environments.