Apparatus and method for scheduling user defined operator (UDO) in data stream management system (DSMS)
US8954460B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Jun 20, 2012 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Jun 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/24568
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and a method of optimizing queries through scheduling User Defined Operators (UDOs) in a Data Stream Management System (DSMS), are provided. The apparatus includes a query optimizer configured to receive queries, each of the queries including the UDOs and data streams subject to respective operations of the UDOs, and group the data streams and UDOs into scheduling units, each of the scheduling units including one of the data streams and one of the UDOs. The apparatus further includes a scheduler configured to schedule an execution order in which the scheduling units are executed.
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