During March 2026, Zyzz Xycj focused on stabilizing Spark’s driver spill path in the apache/auron repository by addressing a critical null pointer exception in SparkOnHeapSpillManager. Zyzz introduced a null check for TaskContext to prevent runtime crashes when TaskContext.get returned null, and updated the JNI bridge to correctly reference OnHeapSpillManager methods. This work, implemented in Scala and Rust with careful attention to Java/Scala interoperability and JNI maintenance, was validated through targeted unit tests. Zyzz’s contribution improved the reliability of large-scale Spark jobs, demonstrating depth in backend development, null-safety practices, and collaborative code review within a complex distributed system.