Technique for higher availability in a multi-node system using replicated lock information to determine a set of data blocks for recovery
US10459810B2 · kind B2 · utility
0Cited by
88References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2017 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Oct 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are described herein for quick identification of a set of units of data for which recovery operations are to be performed to redo or undo changes made by the failed node. When a lock is requested by an instance, lock information for the lock request is replicated by another instance. If the instance fails, the other instance may use the replicated lock information to determine a set of data blocks for recovery operations. The set of data blocks is available in memory of a recovery instance when a given node fails, and does not have to be completely generated by scanning a redo log.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.