During March 2025, Wei Song developed a configurable DataNode order randomization feature for getBlockLocations in the apache/hadoop repository, focusing on enhancing load distribution in large HDFS clusters. He introduced a new shuffle method within NetworkTopology and updated DatanodeManager to apply randomization based on a configuration toggle, ensuring backward compatibility by defaulting the feature to off. This Java-based solution leverages configuration management and distributed systems expertise to provide operational flexibility while minimizing risk to existing deployments. Wei’s work laid the groundwork for gradual adoption of randomized DataNode selection, addressing scalability and performance concerns without disrupting established cluster behavior.