SOSP2025
Mantle: Efficient Hierarchical Metadata Management for Cloud Object Storage Services
Jiahao Li, Biao Cao, Jielong Jian, Cheng Li, Sen Han, Yiduo Wang, Yufei Wu, Kang Chen, Zhihui Yin, Qiushi Chen, Jiwei Xiong, Jie Zhao, Fengyuan Liu, Yan Xing, Liguo Duan, Miao Yu, Ran Zheng, Feng Wu, Xianjun Meng
4 citations
Abstract
Cloud Object Storage Services (COSSs) are the primary storage backend in the cloud, supporting large-scale analytics and ML workloads that frequently access deep object paths and update metadata concurrently. However, current COSS architectures incur costly multi-round lookups and high directory contention, delaying job execution. Prior optimizations, largely designed for distributed file systems (with least adoption in clouds), do not apply due to COSS-specific constraints like stateless proxies and limited APIs.