A Non-Forced-Write Atomic Commit Protocol for Cluster File Systems

	A Non-Forced-Write Atomic Commit Protocol for Cluster File Systems
	Shao BingQing 1; Zhan JunWei 1; Zheng CaiPing 1; Zhang Hao 1; Liu ZhenJun 1; Xu Lu 1
	2014
发表期刊	JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
ISSN	1000-9000
卷号	29 期号:2 页码:303
摘要	Distributed metadata consistency is one of the critical issues of metadata clusters in distributed file systems. Existing methods to maintain metadata consistency generally need several log forced write operations. Since synchronous disk IO is very inefficient, the average response time of metadata operations is greatly increased. In this paper, an asynchronous atomic commit protocol (ACP) named Dual-Log (DL) is presented. It does not need any log forced write operations. Optimizing for distributed metadata operations involving only two metadata servers, DL mutually records the redo log in counterpart metadata servers by transferring through the low latency network. A crashed metadata server can redo the metadata operation with the redundant redo log. Since the latency of the network is much lower than the latency of disk TO, DL can improve the performance of distributed metadata service significantly. The prototype of DL is implemented based on local journal. The performance is tested by comparing with two widely used protocols, EP and S2PC-MP, and the results show that the average response time of distributed metadata operations is reduced by about 40%-60%, and the recovery time is only 1 second under 10 thousands uncompleted distributed metadata operations.
关键词	atomic commit protocol cluster file system distributed metadata operation consistency Dual-Log
语种	英语
资助项目	[National Basic Research 973 Program of China] ; [National High Technology Research and Development 863 Program of China] ; [Strategic Priority Research Program of the Chinese Academy of Sciences] ; [Chinese Academy of Sciences Key Deployment Project]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/37414
专题	中国科学院计算技术研究所期刊论文_中文
作者单位	1.中国科学院计算技术研究所 2.中国科学院大学
第一作者单位	中国科学院计算技术研究所
推荐引用方式 GB/T 7714	Shao BingQing,Zhan JunWei,Zheng CaiPing,et al. A Non-Forced-Write Atomic Commit Protocol for Cluster File Systems[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2014,29(2):303.
APA	Shao BingQing,Zhan JunWei,Zheng CaiPing,Zhang Hao,Liu ZhenJun,&Xu Lu.(2014).A Non-Forced-Write Atomic Commit Protocol for Cluster File Systems.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,29(2),303.
MLA	Shao BingQing,et al."A Non-Forced-Write Atomic Commit Protocol for Cluster File Systems".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 29.2(2014):303.