Microsoft Technology Licensing, LLC

Akram Hassan

Saad Syed

Ajay Mani

Sushant Pramod Rewaskar

Abhishek Kumar Singh

Wei Zhao

Gaurav Jagtiani

Thiruvengadam Venketesan

Pavel Anatolievich Dournov

Ashish B Shah

Todd F Pfleiger

Luis Irun-Briz

Gaurav Gupta

Haizhi Xu

Corey M Sanders

Pavithra Tyamagondlu Nagesharao

Ivan Santa Maria Filho

Maxim Khutomenko

Umer Azad

Todd Pfleiger

Abhishek Singh

Ashish Shah

Sushant Pramad Rewaskar

Embodiments described herein are directed to migrating affected services away from a faulted cloud node and to handling faults during an upgrade. In one scenario, a computer system determines that virtual machines running on a first cloud node are in a faulted state. The computer system determines which cloud resources on the first cloud node were allocated to the faulted virtual machine, allocates the determined cloud resources of the first cloud node to a second, different cloud node and re-instantiates the faulted virtual machine on the second, different cloud node using the allocated cloud resources.

Healing cloud services during upgrades

A distributed application may be updated by using information provided by the application to determine grouping, sequencing, and whether or not to advance an update sequence. The application may provide input to an update sequence, and may cause the update sequence to repair one or more replicas prior to updating. The update mechanism may be used to change the distributed application topology as well as make changes to the application executable code, application configuration, quest operating system, virtual machine, and host systems, among others. In some cases, the distributed application may use a quorum to determine which version is current, and the quorum may change during the update process.

Coordinated upgrades in distributed systems

Methods, systems, and computer-readable media for facilitating coordination between a fabric controller of a cloud-computing network and a service application running in the cloud-computing network are provided. Initially, an update domain (UD) that includes role instance(s) of the service application is selected, where the service application represents a stateful application is targeted for receiving a tenant job executed thereon. The process of coordination involves preparing the UD for execution of the tenant job, disabling the role instance(s) of the UD to an offline condition, allowing the tenant job to execute, and restoring the role instance(s) to an online condition upon completing execution of the tenant job. Preparing the UD includes notifying a management role established within the service application of the fabric controller's intent to execute the tenant job and receiving a management-role response communicating a presence of replications of internal state(s) of the role instance(s) affected by the tenant job.

Increasing availability of stateful applications

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Sammamish, WA, United States of America

Akram Hassan