Speculative recovery using storage snapshot in a clustered database
US9098454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2013 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/80
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.