Towards reliable distributed reconfiguration

  • Authors:
  • Ngoc-Tho Huynh;An Phung-Khac;Maria-Teresa Segarra

  • Affiliations:
  • Institut Telecom Telecom Bretagne, Brest, France;Institut Telecom Telecom Bretagne, Brest, France;Institut Telecom Telecom Bretagne, Brest, France

  • Venue:
  • Adaptive and Reflective Middleware on Proceedings of the International Workshop
  • Year:
  • 2011

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Abstract

In component-based software engineering, reconfiguration often refers to the activity of changing a running software system at the component level. Reconfiguration is widely used for evolving and adapting software systems that can not be shut down for update. However, in distributed systems, supporting reconfiguration is a challenging task since a reconfiguration consists of distributed reconfiguration actions that need to be coordinated. Particularly, this task becomes much more challenging in the context of unstable networks where nodes may disconnect frequently, even during reconfiguration. To address this challenge, we propose a platform supporting distributed reconfiguration that embodies a solution for managing system states at reconfiguration time. We define (1) different system states regarding reconfiguration and (2) ways that the system will act accordingly. When a disconnection is detected during a reconfiguration, the system may correct reconfiguration plans to continue the reconfiguration if possible, or recover if the reconfiguration fails.