Transient range versioning based on redirection
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United States of America Patent
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Feb 14, 2012
Grant Date -
Apr 6, 2006
app pub date -
Oct 6, 2004
filing date -
Oct 6, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method (and an article of manufacture having computer readable program code to implement the method) is disclosed to version a node range and locate a versioned node range in a storage architecture, wherein the method comprises: maintaining a set of node ranges, with each node range being formed from a range of node ID values assigned to each node among a plurality of nodes, receiving a node modification request for a node range from a database system, versioning the node range by copying (to a storage) a node range to which the node modification request is to be made, labeling the copied node range with a timestamp, locating the labeled node range via the timestamp and a hash on the node range, and outputting the located labeled node range. Optionally, versioning is done by shadowing nodes in the range to a version hash table based on a range identifier.
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