公开(公告)号：WO2015003877A2

公开(公告)日：2015-01-15

申请号：PCT/EP2014062588

申请日：2014-06-16

Applicant: IBM ,  IBM UK

Inventor： GRIFFITH DOUGLAS ,  JAEHDE ANGELA ASTRID ,  OCHS MATTHEW RYAN

CPC classification number: G06F11/1458 ,  G06F11/1448 ,  G06F11/1469 ,  G06F11/1471 ,  G06F11/1662 ,  G06F11/2028 ,  G06F11/2038 ,  G06F11/2046 ,  G06F2201/80

Abstract: A method, system, and computer program product for recovery in a database are provided in the illustrative embodiments. A failure is detected in a first computing node, the first computing node serving the database in a cluster of computing nodes. A snapshot is created of data of the database. A subset of log entries is applied to the snapshot, the applying modifying the snapshot to result in a modified snapshot. An access of the first computing node to the data of the database is preserved. Responsive to receiving a signal of activity from the first computing node during the applying and after a grace period has elapsed, the applying is aborted such that the first computing node can continue serving the database in the cluster.

Abstract translation: 在说明性实施例中提供了用于数据库中恢复的方法，系统和计算机程序产品。 在第一计算节点中检测到故障，第一计算节点服务于计算节点集群中的数据库。 快照是创建数据库的数据。 将日志条目的子集应用于快照，应用修改快照以生成修改后的快照。 第一计算节点对数据库的数据的访问被保留。 响应于在应用期间和宽限期已经过去之后从第一计算节点接收到活动的信号，中止应用，使得第一计算节点可以继续为集群中的数据库提供服务。