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OwnerSudhir G. Rao, Myung M. Bae +10inventors
InventorsSudhir G. Rao, Myung M. Bae, Thomas K. Clark, Douglas Griffith, Roger L. Haskin, Shah Mohammad Rezaul Islam, Felipe Knop, Soumitra Sarkar, Frank B. Schmuck, Theodore B. Vojnovich, Yi Zhou, Robert Curran
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The acquisition of a lock among nodes of a divided cluster is disclosed. A method is performable by each of at least one node of the cluster. A node waits for a delay corresponding to its identifier. The node asserts intent to acquire the lock by writing its identifier to X and Y variables where another node has failed to acquire the lock. The node waits for another node to acquire the lock where the other node has written to X, and proceeds where Y remains equal to its own identifier. The node waits for another node to acquire the lock where the other node has written to a Z variable, and writes its own identifier to Z and proceeds where the other node has failed. The node writes a value to Y indicating that it is acquiring the lock, and maintains acquisition by periodically writing to Z.
A method performable by each node of at least one node of a plurality of nodes of a divided cluster comprising, repeating a loop of:
A system comprising:
A server computing device comprising:
An article of manufacture comprising:
Dependencies are inferred from the claim text.