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Recovering Lagging Replicas in a Fault Tolerant System


Hua Chai and Wenbing Zhao

Department of Electrical and Computing Engineering, Cleveland State University, 2121 Euclid Ave., Cleveland, OH 44115, USA

Received on: July 14, 2010



In this paper, we discuss an often-ignored, but very important issue, i.e., how to recover slow replicas quickly in a fault tolerant system. Despite the fact that the replicas are deployed in identically-equipped computing nodes, under heavy load, some replicas would lag behind due to various reasons. Quickly recovering slow replicas is important because not doing so could result in reduced throughput, high jitters in end-to-end latency, and reduced replication degree.


Status: Published in Vol. 7, No. 2, March 2011, pp. 195-197.

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