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:
Jan. 21, 2014
Filed:
Nov. 03, 2011
Bernhard Wolf, Dresden, DE;
Bernhard Wolf, Dresden, DE;
SAP AG, Walldorf, DE;
Abstract
A request handler may determine a query of a data stream management system (DSMS), wherein the query includes a plurality of operators being configured to execute the query collaboratively within the DSMS, and wherein stored stream-related data includes operator-associated windows of state data from the stream data, the request handler being further configured to determine a new query having new windows corresponding to the windows of the original query. A windows sorter may sort the new windows from longest duration to shortest duration to obtain a sorted new windows list. A migration estimator may calculate individual migration times for migrating state data from each window to its corresponding new window, beginning with the longest new window of the sorted new windows list. A migration aggregator may aggregate the individual migration times to obtain a total migration time for the new query.