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:
Feb. 04, 2020
Filed:
Sep. 29, 2016
International Business Machines Corporation, Armonk, NY (US);
Lawrence Y. Chiu, Saratoga, CA (US);
Aayush Gupta, San Jose, CA (US);
Paul H. Muench, San Jose, CA (US);
Sangeetha Seshadri, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
One embodiment provides a method for retrospective snapshot creation including creating, by a processor, a first snapshot that captures logical state of a data store at a first key. Creation of the first snapshot is based on determining a log offset corresponding to the first key, determining existence of a second snapshot that captures logical state of the data store and recording a retrospective snapshot at a last valid log address offset prior to the first key upon a determination that the second snapshot exists based on determining at least one of: whether log address offsets from a first log entry of a log to a log entry of the log at the first key are contiguous and whether log address offsets from the second snapshot to the first key are contiguous.