Adding and removing processes in a single view

Details Adding and removing processes in a single view Adding and removing processes in a single view

2006-09-12

2006-09-12

Follansbee, John (Department: 2154)

Electrical computers and digital processing systems: multicomput

Computer conferencing

Cooperative computer processing

C709S248000, C714S013000, C714S015000, C707S793000, C717S168000, C717S174000, C717S175000, C717S176000

Reexamination Certificate

active

07107313

ABSTRACT:
The present invention provides a system and method for promoting a probationary member to a full member in a distributed system. A probationary member includes a process in a distributed system that is intended to be added or intended to replace an existing process in the system. Prior to adding or replacing the probationary member, the probationary member is evaluated based on criteria associated with context information related to the system. Based on the evaluation, the probationary member may be promoted to a full member of the system or eliminated from the system. Therefore, the present invention provides the opportunity to evaluate the probationary member in the system, prior to the probationary member being promoted to a full member of the system. Additionally, the probationary member may be added or replace an existing process in a single view change. Therefore, fault tolerance is maintained when the probationary member is replacing a mirror in a fault-tolerant distributed system.

REFERENCES:
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patent: 6748438 (2004-06-01), Palmer et al.
patent: 2002/0016845 (2002-02-01), Palmer et al.
Moser et al., “Processor Membership in Asynchronous Distributed Systems”, May 1994, IEEE, vol. 5, No. 5, pp. 459-473.
Moser et al., “Membership Algorithms for Asynchronous Distributed Systems”, 1991, IEEE, pp. 480-488.

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