R&D: Crail-KV, High-Performance Distributed Key-Value Store Leveraging Native KV-SSDs over NVMe-oF
Changes enable fewer RPCs and require less memory for metadata management, resulting in performance improvement of "up to 5X."
This is a Press Release edited by StorageNewsletter.com on May 27, 2019 at 2:19 pmIEEE Xplore has published, in 2018 IEEE 37th International Performance Computing and Communications Conference (IPCCC) proceedings an article written by Tim Bisson, Ke Chen, Changho Choi, Vijay Balakrishnan, and Yang-suk Kee, Samsung DSA.
Abstract: “A Key-Value SSD (KV-SSD) is a new type of storage device that natively exposes a key-value interface. In this paper, we leverage KV-SSDs to develop new techniques to remove unnecessary layers of indirection traditionally imposed by block devices on distributed storage systems. Specifically, we extend the Crail distributed system [1] to leverage the KV-SSD’s native key-value interface exposing it directly to clients through the NVMe-oF protocol. This architectural change simplifies key-value metadata management, as the metadata manager need only track key-value tuples rather than files comprised of blocks. These changes enable fewer RPCs and require less memory for metadata management, resulting in a performance improvement of up to 5x.“
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