Meituan Technology Team

May 19, 2017 · Databases

Speculative Partial Writes in Erasure-Coded Storage Systems (PBS Design and Evaluation)

The paper translates a USENIX'17 study on speculative partial writes for erasure‑coded storage, introducing PBS (Parity‑Based Speculation) which logs parity changes to turn costly random writes into sequential appends, achieving write IOPS and latency comparable to triple‑replication while maintaining fast recovery and high EC encoding throughput.