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1. 发明授权

US07756830B1 Error detection protocol 有权
标题翻译：错误检测协议
公开(公告)号：US07756830B1
公开(公告)日：2010-07-13
申请号：US09282907
申请日：1999-03-31
申请人： Ching-Yun Chao , Roger Eldred Hough , Rodolfo Augusto Mancisidor-Landa , Javashree Ramanathan , Amal Ahmed Shaheen
发明人： Ching-Yun Chao , Roger Eldred Hough , Rodolfo Augusto Mancisidor-Landa , Javashree Ramanathan , Amal Ahmed Shaheen
IPC分类号： G06F17/30
CPC分类号： G06F11/187 , G06F11/1425 , G06F11/182 , G06F17/30575
摘要： A method and apparatus for providing a recent set of replicas for a cluster data resource within a cluster having a plurality of nodes. Each of the nodes having a group services client with membership and voting services. The method of the present invention concerns broadcasting a data resource open request to the nodes of the cluster, determining a recent replica of the cluster data resource among the nodes, and distributing the recent replica to the nodes of the cluster. The apparatus of the present invention is for providing a recent set of replicas for a cluster data resource. The apparatus has a cluster having a plurality of nodes in a peer relationship, each node has an electronic memory for storing a local replica of the cluster data resource. A group services client, which is executable by each node of the cluster, has cluster broadcasting and cluster voting capability. A database conflict resolution protocol (“DCRP”), which is executable by each node of the cluster, interacts with the group services clients such that the DCRP broadcasts to the nodes a data resource modification request having a data resource identifier and a timestamp. The DCRP determines a recent replica of the cluster data resource among the nodes with respect to the timestamp of the broadcast data resource modification request relative to a local timestamp associated with the data resource identifier, and distributes the recent replica of the cluster data resource to each node of the plurality of nodes.
摘要翻译：一种用于在具有多个节点的集群内为集群数据资源提供最近的一组副本的方法和装置。每个节点具有具有成员资格和投票服务的组服务客户端。本发明的方法涉及向簇的节点广播数据资源打开请求，确定节点之间的集群数据资源的最近副本，并将最近的副本分发到集群的节点。本发明的装置用于提供用于集群数据资源的一组最新的副本。该设备具有具有对等关系的多个节点的集群，每个节点具有用于存储集群数据资源的本地副本的电子存储器。由群集的每个节点执行的组服务客户端具有集群广播和集群投票功能。由集群的每个节点执行的数据库冲突解决协议（“DCRP”）与组服务客户端交互，使得DCRP向节点广播具有数据资源标识符和时间戳的数据资源修改请求。相对于与数据资源标识符相关联的本地时间戳相对于广播数据资源修改请求的时间戳，DCRP确定节点之间的集群数据资源的最近副本，并且将最近的集群数据资源副本分发给每个节点。

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