Protocol-Aware Recovery for Consensus-Based Storage


Ramnatthan Alagappan and Aishwarya Ganesan, University of Wisconsin—Madison; Eric Lee, University of Texas at Austin; Aws Albarghouthi, University of Wisconsin—Madison; Vijay Chidambaram, University of Texas at Austin; Andrea C. Arpaci-Dusseau and Remzi H. Arpaci-Dusseau, University of Wisconsin—Madison

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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 have little performance overhead.

@inproceedings {238415,
author = {Ramnatthan Alagappan and Aishwarya Ganesan and Eric Lee and Aws Albarghouthi and Vijay Chidambaram and Andrea C. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau},
title = {{Protocol-Aware} Recovery for {Consensus-Based} Storage},
booktitle = {2019 USENIX Annual Technical Conference (USENIX ATC 19)},
year = {2019},
address = {Renton, WA},
url = {},
publisher = {USENIX Association},
month = jul

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