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. 15, 2011
Filed:
Nov. 29, 2007
Dean Har'el Lorenz, Haifa, IL;
Roman Vitenberg, Oslo, NO;
Alan J. Wecker, Misgav, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A rollback support method for transactions a node among nodes in a distributed system, including modifying a disposable cache copy of data as part of transaction, propagating a version state and/or a data state of the modified cache to any of the nodes, verifying non-violation of a transaction semantic and/or a replication policy relating to the transaction, committing the transaction to any nodes if successful, revising a version state of other reliable replicas and disposable cache copies in the system based on the version state of the modified disposable cache copy, the disposable cache copies being members of a membership-based view, and updating a data state of other reliable replicas in the system based on the data state of the modified copy, and aborting the transaction if it fails, including restoring the disposable cache copy based on any reliable replicas and/or disposable cache copies in the system.