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<p><b>Abstract</b>—Past research in message logging has focused on studying the relative overhead imposed by pessimistic, optimistic, and causal protocols during failure-free executions. In this paper, we give the first experimental evaluation of the performance of these protocols during recovery. Our results suggest that applications face a complex trade-off when choosing a message logging protocol for fault tolerance. On the one hand, optimistic protocols can provide fast failure-free execution and good performance during recovery, but are complex to implement and can create orphan processes. On the other hand, orphan-free protocols either risk being slow during recovery, e.g., sender-based pessimistic and causal protocols, or incur a substantial overhead during failure-free execution, e.g., receiver-based pessimistic protocols. To address this trade-off, we propose <it>hybrid</it> logging protocols, a new class of orphan-free protocols. We show that hybrid protocols perform within two percent of causal logging during failure-free execution and within two percent of receiver-based logging during recovery.</p>
Distributed computing, fault tolerance, log-based rollback recovery, pessimistic protocols, optimistic protocols, causal protocols, hybrid protocols.
Sriram Rao, Lorenzo Alvisi, Harrick M. Vin, "The Cost of Recovery in Message Logging Protocols", IEEE Transactions on Knowledge & Data Engineering, vol. 12, no. , pp. 160-173, March/April 2000, doi:10.1109/69.842260
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