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Recovery segments

  • US 8,909,987 B2
  • Filed: 04/27/2012
  • Issued: 12/09/2014
  • Est. Priority Date: 04/27/2012
  • Status: Expired due to Fees
First Claim
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1. A method for implementing recovery segments in a large scale computing application comprising:

  • sending an application message from a parent process executed by a first computing device to a child process executed by a second computing device, in which the recovery segment comprises the parent process and the child process;

    identifying a dependency created by the application message;

    including the identified dependency in a dependence set of the child process and saving the dependence set in memory of the second computing device;

    generating, by the parent process, a first checkpoint and saving the first checkpoint in nonvolatile memory of the first computing device;

    sending, from the parent process to a child process, a checkpoint message that includes dependency information;

    receiving, by the child process, the checkpoint message and modifying the dependence set of the child process according to the dependency information;

    generating, by the child process, a second checkpoint and saving the second checkpoint in nonvolatile memory of the second computing device;

    upon occurrence of a failure of the parent process, reverting the child process to a most recent checkpoint generated by the child process that does not include effects of processing an orphan message.

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