Hadoop ecosystem, distributed computing, big data processing, software architecture, complex system, nodes clustered together, master node, slave nodes, HDFS storage, MapReduce programming model, YARN resource management, Hive data warehousing, Pig scripting engine, Spark in-memory processing, Flume event handling, Sqoop data transfer, Oozie workflow scheduler, ZooKeeper coordination service, Linux operating system, server racks, data center, cloud infrastructure, high-performance computing, network cables, screens displaying code, developers working together, collaborative environment, bright office lighting.