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https://issues.apache.org/jira/browse/MESOS-9178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16614185#comment-16614185
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Xudong Ni commented on MESOS-9178:
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[~bmahler] What's your thoughts?
> Add a metric for master failover time.
> --------------------------------------
>
> Key: MESOS-9178
> URL: https://issues.apache.org/jira/browse/MESOS-9178
> Project: Mesos
> Issue Type: Improvement
> Components: master
> Reporter: Xudong Ni
> Assignee: Xudong Ni
> Priority: Minor
>
> When an agent is reregistrated, the time delta from that moment to
> the master elected time was saved; In the progress of reregistration,
> each data entry represents the registration time delta from master
> elected time; The percentile of these data as in this metrics can
> represent overall reregistration progress; In case of degradation
> towards to the end of reregistration, the high percentile will
> reflect it.
> Note: These metrics only represent the completed reregistration; It
> does not monitor agents were finally marked as unreachable that the
> reregistration didn't actually happen, the unreachable agents were
> already monitored by existing metrics.
> https://reviews.apache.org/r/68706/
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