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Posted to issues@mesos.apache.org by "Neil Conway (JIRA)" <ji...@apache.org> on 2015/10/02 00:29:26 UTC

[jira] [Created] (MESOS-3572) Faster catchup protocol for "learned" replicated log entries

Neil Conway created MESOS-3572:
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             Summary: Faster catchup protocol for "learned" replicated log entries
                 Key: MESOS-3572
                 URL: https://issues.apache.org/jira/browse/MESOS-3572
             Project: Mesos
          Issue Type: Bug
            Reporter: Neil Conway


Right now, the catchup protocol does a full Paxos round for every log entry missing from a recovering replica. This should be unnecessary for "learned" log entries, because there is no uncertainty about the status of such log entries. We'll probably only need to do a full Paxos round for entries near the tail of the log.

To motivate changing this, it would be good to first measure the performance of the catchup protocol to understand if/when performance improvements would be useful. There's also [MESOS-736], which is about how to do catchup in parallel.



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