NDLI: Using agent wills to provide fault-tolerance in distributed shared memory systems

Content Provider	IEEE Xplore Digital Library
Author	Rowstron, A.
Copyright Year	2000
Description	Author affiliation: Microsoft Res. Ltd., Cambridge, UK (Rowstron, A.)
Abstract	In this paper we describe how we use mobile objects to provide distributed programs coordinating through a persistent distributed shared memory (DSM) with tolerance to sudden agent failure, and use the increasingly popular Linda-like tuple space languages as an example for implementation of the concept. In programs coordinating and communicating through a DSM a data structure is shared between multiple agents, and the agents update the shared structure directly. However, if an agent should suddenly fail it is often hard for the agents to make the data structures consistent with the new application state. For example consider if a data structure contains a list of active agents. In such a case, transactions can be used when adding and removing agent names from the list ensuring that that the data structure is consistent and does not become corrupted should an agent fail. However If failure of the agent occurs after the name has been added, how does the application ensure the list is correct? We argue that using mobile objects we can provide wills for the agents to effectively enable them to ensure the shared data structure is application consistent, even once they have Sailed We show how we have integrated the use of agent wills into a Linda system and show that we have not increased the complexity, of program writing. The integration is simple and general, does not alter the underlying semantics of the operations performed in the will and the use of mobility is transparent to the programmer.
Starting Page	317
Ending Page	324
File Size	67917
Page Count	8
File Format	PDF
ISBN	0769505007
ISSN	10666192
DOI	10.1109/EMPDP.2000.823426
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-01-21
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault tolerant systems Electrical capacitance tomography Java Application software Read only memory Writing Programming profession Internet Memory management Mars
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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