Qing Feng developed cross-repository enhancements to improve data storage interoperability and high availability in distributed systems. Working in Python and Rust, Qing integrated Gravitino’s virtual file system into the Daft repository, enabling seamless read and write operations for Lance files via gvfs URIs and ensuring correct propagation of storage options to the backend. In the apache/opendal repository, Qing added HDFS-native high availability support by implementing multi-namenode connectivity, which increased resilience and reduced manual configuration for HDFS-native clusters. The work demonstrated depth in backend development, cloud storage integration, and data engineering, directly addressing operational friction and data access challenges.