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Coordinated upgrades in distributed systems

  • US 9,753,713 B2
  • Filed: 10/22/2010
  • Issued: 09/05/2017
  • Est. Priority Date: 10/22/2010
  • Status: Active Grant
First Claim
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1. A method performed on a plurality of computer processors, said method comprising:

  • executing a distributed application on said plurality of computer processors, said distributed application being executed by a plurality of replicas of application code;

    said distributed application being executed on virtual machines having guest operating systems, said virtual machines being operated on host devices;

    grouping said plurality of replicas into update domains, said update domains being groups of said replicas;

    identifying an update to perform on said distributed application;

    querying the distributed application, by a fabric controller, to identify a sequence of said update domains to update;

    for each of said update domains, processing, by the fabric controller according to the sequence, a current update domain to perform said update, said processing comprising;

    querying said application executing in a current update domain, before transmission of said update for reception by said current update domain, to determine whether said application considers said current update domain ready for updating;

    after receiving a query response indicative of said current update domain being ready for updating, performing said update on said update domain;

    querying said application executing in said current update domain to determine if said update results in said application operating properly within said current update domain;

    when said update results in said application operating properly, proceeding to a next update domain; and

    when said update results in said application operating improperly, suspending said update.

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