NDLI: Providing persistence for sensor streams with light neighbor WAL

Content Provider	IEEE Xplore Digital Library
Author	Kawashima, H. Imai, M. Toyama, M. Anzai, Y.
Copyright Year	2002
Description	Author affiliation: Keio Univ., Yokohama, Japan (Kawashima, H.)
Abstract	Sensor database systems need to provide both freshness of data and persistence to the incoming sensor streams. To provide persistence, a disk based logging method has been widely used, however it is not applicable for sensor streams because of its tardiness. In this paper, we propose the light neighbor write ahead logging protocol(L-WAL) for sensor streams. The L-WAL is a refinement of the neighbor-WAL (N-WAL). The L-WAL needs two network interfaces and applies a relaxed protocol rather than a two phase commit protocol. Since the relaxed protocol weakens the guarantee of logging successes, we have incorporated a repair system and checker system to enhance the guarantee. The result of experiments shows that the L-WAL is about 2.13 times faster than the N-WAL when the number of concurrent sensor streams is 250 and the L-WAL can enhance the persistence of data almost for free, while the N-WAL needs to pay high cost.
Sponsorship	IEEE Comput. Soc. Tech. Committee on Fault-Tolerant Comput. IEICE Tech. Group on Dependable Comput. IFIP WG10.4 on Dependabel Comput. & Fault Tolerance Jet Propulsion Lab
Starting Page	257
Ending Page	264
File Size	324180
Page Count	8
File Format	PDF
ISBN	0769518524
DOI	10.1109/PRDC.2002.1185645
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-12-16
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Database systems Sensor systems Protocols Intelligent sensors Real time systems Information analysis Intelligent robots Monitoring Network interfaces
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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