Scrambling Query Plans to Cope With Unexpected Delays

  title={Scrambling Query Plans to Cope With Unexpected Delays},
  author={Laurent Amsaleg and Michael J. Franklin and Anthony Tomasic and Tolga Urhan},
Accessing data from numerous widely distributed sources poses signi cant new challenges for query opti mization and execution Congestion and failures in the network can introduce highly variable response times for wide area data access This paper is an initial ex ploration of solutions to this variability We introduce a class of dynamic run time query plan modi cation techniques that we call query plan scrambling We present an algorithm that modi es execution plans on the y in response to… CONTINUE READING
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tributed Query Processing in a Multiple Database System

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Distributed Query Processing in a MultipleDatabase System

  • D. Brill, M. Templeton
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