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From "Michael Browning (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (MESOS-4760) Expose metrics and gauges for fetcher cache usage and hit rate
Date Mon, 25 Apr 2016 18:40:13 GMT

     [ https://issues.apache.org/jira/browse/MESOS-4760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Browning updated MESOS-4760:
------------------------------------
    Comment: was deleted

(was: Great, I'll get on that. One question to guide my implementation: I discovered the need
for this so that metrics could be correctly implemented, but other than that, what was the
motivation for refactoring fetcher/agent/containerizer this way?)

> Expose metrics and gauges for fetcher cache usage and hit rate
> --------------------------------------------------------------
>
>                 Key: MESOS-4760
>                 URL: https://issues.apache.org/jira/browse/MESOS-4760
>             Project: Mesos
>          Issue Type: Improvement
>          Components: fetcher, statistics
>            Reporter: Michael Browning
>            Assignee: Michael Browning
>            Priority: Minor
>              Labels: features, fetcher, statistics, uber
>
> To evaluate the fetcher cache and calibrate the value of the fetcher_cache_size flag,
it would be useful to have metrics and gauges on agents that expose operational statistics
like cache hit rate, occupied cache size, and time spent downloading resources that were not
present.



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