Worked on backend development for the Jibing-Li/incubator-doris repository, focusing on optimizing session variable access within file-related scan nodes. The approach involved refactoring the codebase to replace repeated calls to ConnectContext.get().getSessionVariable() with a direct sessionVariable reference, thereby reducing unnecessary context lookups and improving performance across the file scan path. Additionally, the implementation leveraged saved member variables to further streamline session access, resulting in more maintainable and efficient code. The work was carried out using Java and backend engineering principles, emphasizing code clarity and runtime efficiency while addressing a targeted performance bottleneck in the system’s scan node logic.