Hash index
US11023453B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2015 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | May 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Example implementations disclosed herein can be used to build, maintain, and use a hash table distributed across the plurality multiple nodes in a multi-node computing system. The hash table can include data pages associated by corresponding pointers according to a tree data structure. The data pages include leaf data pages. Each leaf data page can be associated with a corresponding hash value and include a tag bitmap. When a transaction associated with a key is executed, a hash value and a tag value are generated based on the key. The leaf data pages can be searched using the hash value. A probability that a leaf data page includes the key can be determined based on a comparison tag value with the tag bitmap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.