The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2024
Filed:
Apr. 25, 2023
Tableau Software, Llc, Seattle, WA (US);
Tableau Software, LLC, Seattle, WA (US);
Abstract
A method selects a federation engine to process a query. The system receives a query that specifies retrieval of data from multiple data sources at distinct physical locations. The system generates multiple federated query plans. Each federated query plan specifies execution of the query using a respective data source as the federation engine. For each federated query plan, the system forms a feature vector including two or more of: (1) a remote cost estimate for executing query operators on data sources distinct from the respective data source; (2) a local cost estimate for executing query operators on the respective data source; and (3) a data transfer cost estimate for transferring partial results from external data sources to the respective data source. The system predicts runtime for each federated query plan, selects a preferred federated query plan using the predicted runtimes, and the preferred federated query plan specifies the federation engine.