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:
Aug. 29, 2017
Filed:
Dec. 30, 2014
Emc Corporation, Hopkinton, MA (US);
Douglas Kilpatrick, Seattle, WA (US);
Suraj Brahma Raju, Bellevue, WA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Implementations are provided herein for an efficient reconstruction of distributed lock states during a group change within a distributed file system. When a node leaves or joins the cluster, a consistent hash can be used in reassigning the coordinator node to all the distributed locks throughout the file system. Through the use of the consistent hash, wherever possible, nodes that exist both prior to and after the group change can maintain their coordinator status for the locks they manage. If the node is aware they are maintaining coordinator status for the locks it manages, it can retain the locking status previously associated with the locks it was coordinating prior to the group change, thus reducing necessary backplane communication from a coordinator change, and increasing the efficiency for the group change process.