Determining affinity in a cluster
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United States of America Patent
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Oct 11, 2011
Grant Date -
Nov 23, 2006
app pub date -
May 18, 2005
filing date -
May 18, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A lock manager system is provided that includes multiple distinct mechanisms for assigning resources to masters. Specifically, the lock manager system includes (1) one or more assignment mechanisms that do not take into account the affinity between nodes and objects (“affinity-independent assignment mechanisms”), and (3) one or more assignment mechanisms that do take into account the affinity between nodes and objects (“affinity-based assignment mechanisms”). At any given time, the assignment of any given resource to a master is governed by only one of the multiple assignment mechanisms employed by the system. Various techniques are described for determining which assignment mechanism to use with which resources.
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