Seamless cluster servicing

US9578091B2 · kind B2 · utility

Assignee

• MICROSOFT TECHNOLOGY LICENSING, LLC · US

Inventors

• Kishore Chaliparambil · Snoqualmie, US
• Carlo Aldo Curino · Woodinville, US
• Kannababu Karanam · Sammamish, US
• Subramaniam Venkatraman Krishnan · Bengaluru, IN
• Christopher William Douglas · Ferndale, US
• Sriram Rao · Sunnyvale, US
• Mostafa Elhemali · Seattle, US
• Chuan Liu · Seattle, US

Key dates

• Filing date: Dec 30, 2013
• Grant date: Feb 21, 2017
• Expiry date: May 31, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L67/10
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Embodiments are directed to progressively migrating source computer nodes where the source computer nodes perform a computer-implemented service. In one embodiment, a computer system determines that execution of the performed service is to be migrated from the source computer nodes to target computer nodes. The computer system groups the source computer nodes into multiple source subgroups, where each source subgroup includes at least one source computer node. The computer system then schedules creation of target subgroups of target nodes. These target subgroups include at least one source computer node and, themselves, correspond to a source subgroup. The computer system activates a first target subgroup corresponding to a first source subgroup, and deactivates the first source subgroup. In this manner, the first target subgroup replaces the first source subgroup. Still further, the target subgroups are scheduled to be created only after the first source subgroup has been deactivated.