Self-described query execution in a massively parallel SQL execution engine
US9792327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2017 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Mar 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/43
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query is executed in a massively parallel processing data storage system comprising a master node communicating with a cluster of multiple segments that access data in distributed storage by producing a self-described query plan at the master node that incorporates changeable metadata and information needed to execute the self-described query plan on the segments, and that incorporates references to obtain static metadata and information for functions and operators of the query plan from metadata stores on the segments. The distributed storage may be the Hadoop distributed file system, and the query plan may be a full function SQL query plan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.