NDLI: Group communication for upgrading distributed programs

Content Provider	IEEE Xplore Digital Library
Author	Higaki, H. Hirakawa, Y.
Copyright Year	1996
Description	Author affiliation: NTT Software Labs., Musashino, Japan (Higaki, H.; Hirakawa, Y.)
Abstract	Recently, large-scale distributed systems are being developed. Since it is expensive to newly develop the system, it is required to adopt the system in use to the changes of the user requirements and the environments. Therefore, it is essential to discuss how to upgrade the distributed programs. The system cannot be kept highly available by the conventional upgrading methods because multiple processes have to be suspended simultaneously. This paper discusses a new method which allows each process to invoke the upgrading procedure independently of the other processes. The key idea is that multiple versions of processes are allowed to co-exist temporarily. If the multiple versions of processes co-exist, such protocol errors as the unspecified receptions and the communication deadlocks can occur. Each pair of an old-version process and a new-version one is named a process group. The group communication protocol proposed in this paper supports message transmissions among the process groups. Moreover, the protocol errors can be detected and resolved by using checkpointing, timeout and rollback recovery.
Starting Page	420
Ending Page	427
File Size	814654
Page Count	8
File Format	PDF
ISBN	0818673990
DOI	10.1109/ICDCS.1996.507990
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-27
Publisher Place	Hong Kong
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protocols System recovery Computer errors Application software Laboratories Large-scale systems Checkpointing Information systems Computer networks Distributed computing
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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