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https://issues.apache.org/jira/browse/MESOS-4760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15230831#comment-15230831
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Michael Browning commented on MESOS-4760:
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Well, low-to-moderate -- I think it's difficult for users to make informed
choices about fetcher cache configuration without any visibility into what it's
buying them. FWIW, I've made some headway on this already, would you be able to
shepherd?
> 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
> 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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