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ECOOP
2006
Springer

Modular Software Upgrades for Distributed Systems

13 years 7 months ago
Modular Software Upgrades for Distributed Systems
Abstract. Upgrading the software of long-lived, highly-available distributed systems is difficult. It is not possible to upgrade all the nodes in a system at once, since some nodes may be unavailable and halting the system for an upgrade is unacceptable. Instead, upgrades must happen gradually, and there may be long periods of time when different nodes run different software versions and need to communicate using incompatible protocols. We present a methodology and infrastructure that make it possible to upgrade distributed systems automatically while limiting service disruption. We introduce new ways to reason about correctness in a multi-version system. We also describe a prototype implementation that supports automatic upgrades with modest overhead.
Sameer Ajmani, Barbara Liskov, Liuba Shrira
Added 22 Aug 2010
Updated 22 Aug 2010
Type Conference
Year 2006
Where ECOOP
Authors Sameer Ajmani, Barbara Liskov, Liuba Shrira
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