| 发明名称 | Speculative recovery using storage snapshot in a clustered database | ||
| 摘要 | A method for recovery in a database is 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. | ||
| 申请公布号 | US9098454(B2) | 申请公布日期 | 2015.08.04 |
| 申请号 | US201314031830 | 申请日期 | 2013.09.19 |
| 申请人 | INTERNATIONAL BUSINESS MACHINES CORPORATION | 发明人 | Griffith Douglas;Jaehde Angela Astrid;Ochs Matthew Ryan |
| 分类号 | G06F11/00;G06F11/14;G06F11/20 | 主分类号 | G06F11/00 |
| 代理机构 | Garg Law Firm, PLLC | 代理人 | Garg Law Firm, PLLC ;Garg Rakesh;Tyson Thomas |
| 主权项 | 1. A method for recovery in a database, the method comprising: detecting a failure in a first computing node, the first computing node serving the database in a cluster of computing nodes; creating, using a processor and a memory, a snapshot of data of the database; applying, using the processor and the memory, a subset of log entries to the snapshot, the applying modifying the snapshot to result in a modified snapshot; preserving an access of the first computing node to the data of the database; and aborting, responsive to receiving a signal of activity from the first computing node during the applying and after a grace period has elapsed, the applying such that the first computing node can continue serving the database in the cluster. | ||
| 地址 | Armonk NY US | ||