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Posted to dev@mesos.apache.org by "Jie Yu (JIRA)" <ji...@apache.org> on 2013/10/14 20:46:41 UTC

[jira] [Created] (MESOS-736) Support catch-up replicated log

Jie Yu created MESOS-736:
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             Summary: Support catch-up replicated log
                 Key: MESOS-736
                 URL: https://issues.apache.org/jira/browse/MESOS-736
             Project: Mesos
          Issue Type: Improvement
            Reporter: Jie Yu
            Assignee: Jie Yu
             Fix For: 0.15.0


When a replica joins Paxos with an empty log, we don't allow this replica to fully participate in Paxos immediately. Instead, this replica is treated as a non-voting member, meaning that it will not reply to any requests from other replicas. It simply learns those log entries that have been agreed on and tries to catch up the leader. When the catch-up process is done, we re-admit this replica to Paxos and allow it to vote.

If we have a disk failure and want to swap a master machine, we can simply start the scheduler on a new machine with an empty log (and that's it).



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