基于共识的分布式存储协议感知恢复

R. Alagappan, Aishwarya Ganesan, Eric Lee, Aws Albarghouthi, Vijay Chidambaram, A. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau
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引用次数: 7

摘要

我们介绍了协议感知恢复(Par),这是一种利用特定于协议的知识从分布式系统中的存储故障中正确恢复的新方法。我们通过设计和实现容错复制(Ctrl)来证明Par的有效性,这是一种特定于复制状态机(RSM)系统的Par机制。我们通过实验证明,LogCabin和ZooKeeper两个系统的Ctrl版本可以安全地从存储故障中恢复并提供高可用性,而未修改的版本可能会丢失数据或不可用。我们还展示了Ctrl版本以很少的性能开销实现了这种可靠性。
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Protocol-Aware Recovery for Consensus-Based Distributed Storage
We introduce protocol-aware recovery (Par), a new approach that exploits protocol-specific knowledge to correctly recover from storage faults in distributed systems. We demonstrate the efficacy of Par through the design and implementation of corruption-tolerant replication (Ctrl), a Par mechanism specific to replicated state machine (RSM) systems. We experimentally show that the Ctrl versions of two systems, LogCabin and ZooKeeper, safely recover from storage faults and provide high availability, while the unmodified versions can lose data or become unavailable. We also show that the Ctrl versions achieve this reliability with little performance overheads.
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