Jiaxin Lu contributed to the apache/spark repository by enhancing Spark Connect’s RPC responses to improve frontend integration and data flow visibility. Using Scala, Spark, and protobuf, Jiaxin modified the DefineDataset and DefineFlow RPCs to include resolved dataset and flow names, enabling more accurate LDP frontend integration. Additionally, Jiaxin addressed a Spark SQL catalog bug by ensuring proto responses returned raw, unquoted values for catalog, database, and identifier fields, which improved consistency and client-side parsing. The work demonstrated a focused approach to backend development, with careful attention to protocol accuracy and integration requirements, resulting in more reliable data discovery workflows.