During March 2026, Lushuai Nada focused on enhancing the resilience and memory management of the apache/celeborn backend, addressing two critical bugs in Java and Scala. Lushuai improved CelebornInputStream by introducing robust exception handling during stream cleanup, enabling seamless peer failover when a primary worker becomes unregistered. In the MemoryManager component, Lushuai ensured replicate channels resume correctly during state transitions, preventing memory growth and stalled replication under pressure. Both fixes were validated with targeted unit tests, demonstrating strong skills in concurrency, error handling, and test-driven development. These contributions improved system reliability and reduced operational risk in distributed deployments.