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https://issues.apache.org/jira/browse/MESOS-9178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16612890#comment-16612890
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Xudong Ni commented on MESOS-9178:
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The difference in the PR and What Yan suggested is how do we calculate the
comparison base. The comparison base in the PR is the number of reregistration
actually happened(as such p9999 is guaranteed, and the max is the last
reregistration), The comparison base in What Yan suggested is the the number
of reregistration actually happened + some reregistration didn't go through
such as unreachable; Since we already has metric covering unreachable already,
I think it may be better not baking that factor into this metrics? The
percentage in the proposal not only represent registration performance but it
is also impacted by the number of unreachable as well;
> 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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