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cs.DB2021★ 1 cited
Releasing Locks As Early As You Can: Reducing Contention of Hotspots by Violating Two-Phase Locking (Extended Version)
Zhihan Guo, Kan Wu, Cong Yan +1
Hotspots, a small set of tuples frequently read/written by a large number of transactions, cause contention in a concurrency control protocol. While a hotspot may comprise only a s…
cs.DB2021★ 1 cited
Cornus: Atomic Commit for a Cloud DBMS with Storage Disaggregation (Extended Version)
Zhihan Guo, Xinyu Zeng, Kan Wu +5
Two-phase commit (2PC) is widely used in distributed databases to ensure the atomicity of distributed transactions. However, 2PC has two limitations. First, it requires two eager l…
cs.DB2019
Learning Functional Dependencies with Sparse Regression
Zhihan Guo, Theodoros Rekatsinas
We study the problem of discovering functional dependencies (FD) from a noisy dataset. We focus on FDs that correspond to statistical dependencies in a dataset and draw connections…