摘要： 系统恢复技术是容错分布式计算机系统的技术核心.目前许多研究工作都偏重于卷回技术.本文综合众多文献,提出卷回技术必须考虑的七个问题;介绍了校验点设置算法的分类及两个经典的系统模型;并对近来几个典型算法作了简要的评价.＊

关键词: 分布式系统, 故障恢复, 卷回技术, 容错

Abstract: The recovery technique is the key to the fault-tolerance distributed system, and most of the present reserch in this field focuses on roll-back technique. This paper reveals the seven problems that roll-back must be involved in, introduces the classification of checkpointing algorithms and two system models,and reviews some re-cent typical algorithms.