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Dynamic Membership Management in a Distributed System

  • US 20100180146A1
  • Filed: 03/22/2010
  • Published: 07/15/2010
  • Est. Priority Date: 04/13/2005
  • Status: Active Grant
First Claim
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1. A method for dynamically managing persistent membership of a coordination group in a distributed environment, the coordination group including a number of sites included in a persistent membership, with one or more of the site including a database and a registrar, the method comprising:

  • receiving, by a registrar of a first site that is a member of the persistent membership, a Membership Request from an entrant seeking to become a member of the persistent membership;

    modifying, by the registrar of the first site, the persistent membership for the entrant;

    responsive to the registrar receiving the Membership Request, disconnecting the registrar of the first site from the coordination group so that the registrar of the first site, while initializing a database for the entrant, does not apply updates to or from a database in other sites of the coordination group while the other sites are able to update at least one database in the coordination group;

    initializing the database for the entrant; and

    reconnecting, by the registrar of the first site, to the coordination group after initialization of the entrant database.

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