[jira] [Updated] (MESOS-3022) export additional metrics from scheduler driver

["Yong Qiao Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-3022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yong Qiao Wang updated MESOS-3022:
----------------------------------
    Shepherd: Benjamin Hindman

> export additional metrics from scheduler driver
> -----------------------------------------------
>
>                 Key: MESOS-3022
>                 URL: https://issues.apache.org/jira/browse/MESOS-3022
>             Project: Mesos
>          Issue Type: Improvement
>            Reporter: David Robinson
>            Assignee: Yong Qiao Wang
>            Priority: Minor
>
> The scheduler driver only exports the metrics below, but ideally it would export its version and a count of messages by message type.
> {code}
> $ curl -s localhost:20902/metrics/snapshot | python -m json.tool
> {
>     "scheduler/event_queue_dispatches": 0,
>     "scheduler/event_queue_messages": 0,
>     "system/cpus_total": 24,
>     "system/load_15min": 0.49,
>     "system/load_1min": 0.36,
>     "system/load_5min": 0.46,
>     "system/mem_free_bytes": 269713408,
>     "system/mem_total_bytes": 33529266176
> }
> {code}
> The scheduler driver version could be used during troubleshooting to identify frameworks that are using an old, potentially backwards incompatible, scheduler driver (eg, a framework hasn't been restarted after a Mesos deploy, so it still links against an old incompatible libmesos).
> A count of messages by message type would help identify a problem w/ a specific feature, eg task reconciliation.



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