During December 2024, Wanggang Terry addressed a critical issue in the xupefei/spark repository by fixing a bug in Spark executor memory management related to resource profiles. He focused on ensuring that executor memory settings reset correctly when multiple resource profiles are active, preventing memory allocation errors and improving the stability of multi-profile Spark deployments. Working primarily with Scala and leveraging his expertise in Apache Spark and backend development, Wanggang delivered a targeted solution within the core Spark module. His work demonstrated a deep understanding of Spark’s resource management internals and contributed to more predictable and reliable memory handling in complex workloads.