Dynamic reassignment of data ownership
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United States of America Patent
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-
Oct 2, 2007
Grant Date -
Oct 28, 2004
app pub date -
Apr 23, 2004
filing date -
Aug 1, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Various techniques are described for improving the performance of a shared-nothing database system in which at least two of the nodes that are running the shared-nothing database system have shared access to a disk. Specifically, techniques are provided for changing the ownership of data in a shared-nothing database dynamically, based on factors such as which node would be the most efficient owner relative to the performance of a particular operation. Once determined, the ownership of the data may be changed permanently to the new owner, or temporarily for the duration of the particular operation.
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