首页> 外国专利> A RECOVERY METHOD USING EXTENDIBLE HASHING BASED CLUSTER LOG IN A SHARED-NOTHING SPATIAL DATABASE CLUSTER

A RECOVERY METHOD USING EXTENDIBLE HASHING BASED CLUSTER LOG IN A SHARED-NOTHING SPATIAL DATABASE CLUSTER

机译:在无共享的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

摘要

A cluster log-based recovery method using extensible hashing in a non-shared spatial database cluster is provided to shorten recovery time of a recovery node and reduce load according to node error generation, as the number of cluster logs needed for recovery is reduced by keeping only the latest update information with extensible hashing. If an error is generated in a node, other nodes in a group record the cluster log to a main member based on extensible hashing. If the node generating the error is autonomously recovered by using a local lot, other node in the group transmits the cluster log to the recovery node generating the error in a packet unit. The recovery node restarts a normal service if consistency with other nodes in the group is kept by reflecting the received cluster log. The cluster log is a pointer appointing the update information of a record and actual data stored in a database, and comprises RID(Record ID) or primary key information.
机译:提供了一种在非共享空间数据库集群中使用可扩展哈希的基于集群日志的恢复方法,以缩短恢复节点的恢复时间并根据节点错误的产生减少负载,因为通过保持数据存储来减少恢复所需的集群日志的数量具有可扩展哈希的仅最新更新信息。如果节点中生成错误,则组中的其他节点将基于可扩展哈希将群集日志记录到主要成员。如果通过使用本地批次自动恢复产生错误的节点,则组中的其他节点会将群集日志发送到以数据包为单位的产生错误的恢复节点。如果通过反映接收到的群集日志来保持与组中其他节点的一致性,则恢复节点将重新启动正常服务。集群日志是指定记录的更新信息和存储在数据库中的实际数据的指针,并且包括RID(记录ID)或主键信息。

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