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. 15, 2015
Filed:
Mar. 27, 2012
Vijay Sridharan, Santa Clara, CA (US);
Huy Nguyen, Belmont, CA (US);
Jia Shi, Burlingame, CA (US);
Alex Tsukerman, Foster City, CA (US);
Kothanda Umamageswaran, Sunnyvale, CA (US);
Vijay Sridharan, Santa Clara, CA (US);
Huy Nguyen, Belmont, CA (US);
Jia Shi, Burlingame, CA (US);
Alex Tsukerman, Foster City, CA (US);
Kothanda Umamageswaran, Sunnyvale, CA (US);
ORACLE INTERNATIONAL CORPORATION, Redwood Shore, CA (US);
Abstract
Systems, methods, and other embodiments associated with detecting a node death in a clustered distributed system are described. In one embodiment, a method includes transmitting a ping message to a peer node in the network. If a reply to the ping message is not received from the peer node, a query is sent to table of port identifiers that lists ports in the cluster. In one embodiment, the query includes a port identifier associated with the peer node. The peer node is declared as inactive/dead when the query fails to locate a match in the table for the port identifier. When the query locates a match in the table for the port identifier, another ping message is periodically transmitted to the peer node.