Electrical computers and digital processing systems: multicomput – Network computer configuring – Reconfiguring
Patent
1997-06-27
2000-08-22
Luu, Le Hien
Electrical computers and digital processing systems: multicomput
Network computer configuring
Reconfiguring
709201, 709222, 709224, 709226, 710 53, 710261, 710 60, 710260, 714 1, 714 41, 714 12, 714736, 711157, 711152, G06F 15177, G06F 15173
Patent
active
061086991
ABSTRACT:
Multiple nodes can concurrently gain membership in a cluster of nodes of a distributed computer system by broadcasting reconfiguration messages to all nodes of the distributed computer system. In response to a reconfiguration request resulting from a node petitioning to join a cluster or a node leaving the cluster, each node determines to which nodes of the distributed computer system the node is connected, i.e., which are sending reconfiguration messages which the node receives. In addition, if multiple nodes fail substantially simultaneously, each node which continues to operate does not receive a reconfiguration message from each of the failed nodes and the failed nodes are omitted from the proposed new cluster. Thus, multiple simultaneous failures are processed in a single reconfiguration. Each of the member nodes of the proposed cluster determine the membership of the proposed cluster and broadcast a reconfiguration message to all proposed member nodes and collects similar messages. If all reconfiguration messages agree, the proposed cluster is accepted. In the case in which one or more nodes leave the cluster, quorum is established in the new cluster relative to the old cluster.
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Kivlin B. Noel
Luu Le Hien
Prieto Beatriz
Sun Microsystems Inc.
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