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From "Erb, Stephan" <>
Subject Re: [Design Doc] Hot Standby in Replicas to Reduce Failover Time
Date Mon, 04 Sep 2017 17:31:51 GMT
Thanks for the detailed design document and the in-depth walkthrough [1]! 
Your proposal seems to be sound. (But be warned, I don’t have much experience in this part
of Aurora or Mesos :-))


On 31.08.17, 04:18, "Jordan Ly" <> wrote:

    Hi everyone,
    Following up on the discussion here:
    I've created a design document detailing the implementation of a "hot
    standby" mechanism where scheduler followers would eagerly read and
    apply entries from the replicated log. The goal of this change is
    that, in the event of a failover, the newly elected follower will not
    have to replay as many entries to rebuild its state and thus can start
    serving traffic faster.
    I have a working prototype of the above design running on a test
    cluster. Please feel free to comment on the doc!
    This document references a current proposal in Mesos by Ilya Pronin
    Jordan Ly

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