[jira] [Commented] (MESOS-469) Scheduler driver should call disconnected on master failover

["Vinod Kone (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659097#comment-13659097 ] 

Vinod Kone commented on MESOS-469:
----------------------------------

https://reviews.apache.org/r/11191/
                
> Scheduler driver should call disconnected on master failover
> ------------------------------------------------------------
>
>                 Key: MESOS-469
>                 URL: https://issues.apache.org/jira/browse/MESOS-469
>             Project: Mesos
>          Issue Type: Bug
>            Reporter: Vinod Kone
>            Assignee: Vinod Kone
>
> Currently the driver only calls disconnected() when it gets NoMasterDetected() message.
> But during a master failover the driver typically only gets NewMasterDetected() and sets an internal variable 'connected = false'. Subsequent driver calls (launchTasks, killTask) are rejected by the driver until it re-registers with a master.
> At Twitter, we have seen this window to be as large as ~5s. It would be nice to inform the scheduler that the driver is 'disconnected()' in this situation.

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