December 2025 — Apache/auron monthly summary focused on delivering business value and technical achievements. The standout deliverable this month was a critical bug fix in Celeborn Shuffle Writer to correct data size calculation by overriding the stop method to use the partition length map directly, ensuring accurate retrieval of partition sizes. The change is captured in commit fbf2a83d73a6a45269d3033c6757da854329d813 and closes #1730. Impact: improved accuracy of data size accounting in the Celeborn shuffle workflow, enabling more reliable downstream analytics and better resource planning. Key achievements include the fix delivery, clear linkage to the related issue/PR, and improvement in data pipeline reliability.

July 2025 performance review: Focused on memory management and stability for vectorized data pushes in apache/celeborn. Delivered a memory-management enhancement to cap in-flight data size, mitigating OutOfMemory risks during large vectorized shuffles. Introduced new configuration and improved in-flight tracking to consider both the number of requests and their total byte size, enabling safer and more predictable resource usage under load. This work strengthened reliability for large-shuffle workloads and improved overall system robustness.