Fault recovery in concurrent queue management systems
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United States of America Patent
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Aug 3, 2010
Grant Date -
Dec 7, 2006
app pub date -
Jun 2, 2005
filing date -
Jun 2, 2005
priority date (Note) -
In Force
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Abstract
A method for fault tolerance and fault recovery in multiprocessor systems that concurrently manage queues is disclosed. The illustrative embodiment comprises a plurality of servers, a queue of jobs to be assigned to the servers, and two queue managers—a primary unit and a secondary unit—such that the secondary fills in for the primary unit while the primary unit is down. The illustrative embodiment provides for smooth transitions from the normal state into the failure state and back into the normal state without losing jobs or violating the queue discipline of the system.
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