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首页> 外国专利> Recovery method using extendible hashing-based cluster logs in shared-nothing spatial database cluster

Recovery method using extendible hashing-based cluster logs in shared-nothing spatial database cluster

机译：无共享空间数据库集群中使用基于可扩展哈希的集群日志的恢复方法

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摘要

The present invention provides a recovery method using extendible hashing-based cluster logs in a shared-nothing spatial database cluster, which eliminates the duplication of cluster logs required for cluster recovery in a shared-nothing database cluster, so that recovery time is decreased, thus allowing the shared-nothing spatial database cluster system to continuously provide stable service. In the recovery method, if a failure occurs in a predetermined node, a second node in a group, including the node, records cluster logs in main memory on the basis of extendible hashing. If the node that has failed recovers itself using a local log, the second node in the group transmits cluster logs in packets to a recovery node that is the failed node. If the recovery node reflects the received cluster logs and maintains consistency with other nodes in the group, the recovery node resumes normal service.
机译：本发明提供了一种在无共享空间数据库集群中使用基于可扩展散列的集群日志的恢复方法，消除了无共享数据库集群中集群恢复所需的集群日志重复，从而减少了恢复时间，从而允许无共享空间数据库集群系统持续提供稳定的服务。在该恢复方法中，如果在预定节点中发生故障，则包括该节点在内的组中的第二节点基于可扩展哈希将群集日志记录在主存储器中。如果发生故障的节点使用本地日志进行自身恢复，则组中的第二个节点会将群集日志中的数据包传输到作为故障节点的恢复节点。如果恢复节点反映收到的群集日志并与组中其他节点保持一致，则恢复节点将恢复正常服务。

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