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Preservation of Correctness During System Reconfiguration in Data Distribution Service for Real-Time Systems (DDS)

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2 Author(s)
Zieba, B. ; Thales Nederland B.V, Haaksbergerstraat 49 ; van Sinderen, M.

This paper addresses dynamic reconfiguration of distributed systems that use a publish/subscribe (pub/sub) middleware. The objective of dynamic reconfiguration is to evolve incrementally from one system configuration to another at run-time in order to e.g., ensure the reliability of the system. The correctness notion of a distributed system is introduced that assures that the system parts that interact with entities under reconfiguration do not fail because of reconfiguration. We analyse the OMG specification of pubsystems - DDS (Data Distribution Service for Real-Time Systems) with respect to its support for the correctness preservation during reconfiguration. We notice that the DDS specification defines such an architecture and behaviour of the pubsub system that automatically preserves correctness. This differentiates the DDS from other middleware technologies that require that the correctness preservation is guaranteed on application level or by reconfiguration manager/controller. We give several examples of automatic correctness preservation supported by the DDS.

Published in:

Distributed Computing Systems Workshops, 2006. ICDCS Workshops 2006. 26th IEEE International Conference on

Date of Conference:

04-07 July 2006