| 一种适合分布式实时数据的动态故障恢复模式 |
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| 引用本文： | 肖迎元,刘云生,刘小锋,廖国琼,王洪亚.一种适合分布式实时数据的动态故障恢复模式[J].上海大学学报(英文版),2006,10(6):510-516. |
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| 作者姓名： | 肖迎元 刘云生 刘小锋 廖国琼 王洪亚 |
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| 作者单位： | School of Computer Science and Technology Huazhong University of Science and Technology，School of Computer Science and Technology Huazhong University of Science and Technology，School of Computer Science and Technology Huazhong University of Science and Technology，School of Computer Science and Technology Huazhong University of Science and Technology，School of Computer Science and Technology Huazhong University of Science and Technology，Wuhan 430074 P.R. China Department of Computer Science and Engineering Tianjin University of Technology Tianjin 300191 P.R. China Wuhan 430074 P.R. China Wuhan 430074 P.R. China Wuhan 430074 P.R. China Wuhan 430074 P.R. China |
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| 基金项目： | Project supported by National Natural Science Foundation ofChina (Grant No .60203017)，Defense Pre-research Projectof the“Tenth Five-Year-Plan”of China (Grant No .413150403) |
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| 摘 要： | 1 Introduction One class of applications , such as power networkscheduling, intelligent traffic and real-ti me monitor-ing,demand that distributed databases are able to pro-cess theti ming constraints of data and transactions andprovide ti mely and correct results ,i.e. distributedreal-ti me database systems are required .In general ,adistributed real-ti me database system(DRTDBS) is thedistributed database system within which transactionsand data have ti ming constraints and system correct-…
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| 关 键 词： | 分布式实时数据库系统 分区崩溃恢复 分区实时存入 登录记录 |
| 文章编号： | 1007-6417（2006）06-0510-07 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-07-01 |
A dynamic crash recovery scheme for distributed real-time database systems |
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| Ying-yuan Xiao Ph. D. Candidate,Yun-sheng Liu Prof.,Xiao-feng Liu,Guo-qiong Liao,Hong-ya Wang.A dynamic crash recovery scheme for distributed real-time database systems[J].Journal of Shanghai University(English Edition),2006,10(6):510-516. |
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| Authors: | Ying-yuan Xiao Ph D Candidate Yun-sheng Liu Prof Xiao-feng Liu Guo-qiong Liao Hong-ya Wang |
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| Institution: | 1. School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China;Department of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300191, P.R. China
2. School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, P.R. China |
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| Abstract: | Recovery performance in the event of failures is very important for distributed real-time database systems. This paper presents a time-cognizant logging-based crash recovery scheme (TCLCRS) that aims at distributed real-time databases, which adopts a main memory database as its ground support. In our scheme, each site maintains a real-time log for local transactions and the subtransactions, which execute at the site, and execute local checkpointing independently. Log records are stored in non-volatile high-speed store, which is divided into four different partitions based on transaction classes. During restart recovery after a site crash, partitioned crash recovery strategy is adopted to ensure that the site can be brought up before the entire local secondary database is reloaded in main memory. The partitioned crash recovery strategy not only guarantees the internal consistency to be recovered, but also guarantee the temporal consistency and recovery of the sates of physical world influenced by uncommitted transactions. Combined with two-phase commit protocol, TCLCRS can guarantee failure atomicity of distributed real-time transactions. |
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| Keywords: | distributed real-time database system partitioned real-time logging partitioned crash recovery |
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