Distributed computing, Apache Hadoop architecture, complex system diagram, multiple nodes, master node, slave nodes, data processing, storage, MapReduce, YARN, Hive, Pig, HDFS, clusters, racks, cables, servers, hardware components, metal casing, blinking lights, wires, circuit boards, fans, cooling systems, industrial background, dark blue tones, futuristic ambiance, detailed textures, intricate details, high-tech atmosphere, 3/4 composition, soft focus, ambient lighting.