Patents by Inventor Kenneth E. Sell

Kenneth E. Sell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mirrored database upgrade using state machine
    Patent number: 9098536
    Abstract: A process for upgrading a mirrored shared-nothing database system comprises a sequence of short well-defined idempotent steps, and at least one non-idempotent step involving transforming a master catalog. The upgrade process is managed and controlled by a state machine that has a persistent memory running on the master node. In the event of a failure or crash during an idempotent step, the process stops the database in the current state and repeats the step. If a failure or crash occurs during a non-idempotent step, the upgrade process is rolled back to the beginning and repeated.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: August 4, 2015
    Assignee: Pivotal Software, Inc.
    Inventors: King Lun Choi, Jeffrey Ira Cohen, Caleb E. Welton, Kenneth E. Sell, Milena Bergant