NDLI: Replica management in object-based systems

Content Provider	IEEE Xplore Digital Library
Author	Tanaka, K. Takizawa, M.
Copyright Year	2001
Description	Author affiliation: Dept. of Comput. & Syst. Eng., Tokyo Denki Univ., Japan (Tanaka, K.)
Abstract	In object-based systems, objects are encapsulations of data and procedures named methods and methods are invoked in a nested manner. We discuss how to lock replicated objects by using the quorum-based scheme. If a pair of methods op/sub 1/ and op/sub 2/ are compatible each method is surely performed on some replica, but both of them may not be performed on the same replica. Compatible methods are exchanged between the replicas if both the methods are not performed on any of the replicas in our protocol. If a method op/sub 1/ is invoked on multiple replicas and each instance of the method op/sub 1/ invokes a method op/sub 2/, op/sub 2/ is performed multiple times on an object, i.e. redundant invocation. In addition since each instance of op/sub 1/ issues a request op/sub 2/ to its quorum, more number of the replicas are locked than the quorum number of op/sub 1/. This is quorum explosion. We discuss how to resolve these redundant invocations and quorum explosion.
Sponsorship	IEEE Comput. Soc.
Starting Page	367
Ending Page	372
File Size	630275
Page Count	6
File Format	PDF
ISBN	0769509517
DOI	10.1109/ICOIN.2001.905453
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-01-31
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols Explosions Niobium Content addressable storage Data engineering Systems engineering and theory Availability Laser mode locking Optimized production technology
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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