Cheng Wang developed a new feature for the apache/cassandra repository, enhancing the nodetool compactionhistory command to display disk usage in human-readable formats. By updating Java classes such as FileUtils.java and CompactionHistory.java, Cheng introduced a -H option that improves the clarity of disk size metrics for system administrators. This work focused on command line tool usability and system administration, enabling more effective capacity planning and troubleshooting. The implementation emphasized code quality and maintainability, integrating seamlessly with existing statistics holders. Over the month, Cheng concentrated on feature delivery rather than bug fixes, demonstrating depth in Java development and operational tooling.