[jira] [Commented] (MESOS-764) Implement Master persistence using the Registrar.

["Benjamin Mahler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13918512#comment-13918512 ] 

Benjamin Mahler commented on MESOS-764:
---------------------------------------

(6) Forcing a version change during recovery: https://reviews.apache.org/r/18675/

> Implement Master persistence using the Registrar.
> -------------------------------------------------
>
>                 Key: MESOS-764
>                 URL: https://issues.apache.org/jira/browse/MESOS-764
>             Project: Mesos
>          Issue Type: Improvement
>          Components: master
>            Reporter: Benjamin Mahler
>            Assignee: Benjamin Mahler
>              Labels: twitter
>             Fix For: 0.19.0
>
>
> Design document:
> https://cwiki.apache.org/confluence/display/MESOS/Registrar+Design+Document
> Using the registrar as a means for persistent, highly available storage of the slave information will allow us to recover slave information when a master is elected as a leader.
> Having persistent slave information will allow the master to answer reconciliation requests from frameworks in a correct and reliable manner. There are currently cases where we cannot answer reconciliation requests in order to avoid providing an incorrect answer (hints in MESOS-295).
> It will also ensure that when we inform the world that a slave is removed, we can enforce that as truth even with the presence of dropped messages and master failovers.



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