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Failure Recovery Alternatives in Grid-Based Distributed Query Processing: A Case Study

  • Jim Smith
  • Paul Watson
Conference paper

Abstract

Fault-tolerance has long been a feature of database systems, with transactions supporting the structuring of applications so as to ensure continuation of updating applications in spite of machine failures. For read-only queries the perceived wisdom has been that support for fault-tolerance is too expensive to be worthwhile. Distributed query processing (DQP) is coming to be seen as a promising way of implementing applications that combine structured data and analysis operations in dynamic distributed settings such as computational grids. Accordingly, a number of protocols have been described that support tolerance to failure of intermediate machines, so as to permit continuation from surviving intermediate state. However, a distributed query can have a non-trivial mapping onto hardware resources. Because of this it is often possible to choose between a number of possible recovery strategies in the event of a failure. The work described here makes an initial investigation in this area in the context of an example query expressed over distributed resources in a Grid and shows that it can be worthwhile to make this choice between recovery alternatives dynamically, at the point a failure is detected rather than statically beforehand.

Keywords

distributed query processing fault-tolerance parallel query processing rollback-recovery 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Jim Smith
    • 1
  • Paul Watson
    • 1
  1. 1.Newcastle UniversityNewcastle upon TyneUK

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