[jira] [Assigned] (HBASE-25524) Region Servers should give some indication that short-circuit reads are configured properly and working

["Rahul Kumar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-25524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rahul Kumar reassigned HBASE-25524:
-----------------------------------

    Assignee: Rahul Kumar

> Region Servers should give some indication that short-circuit reads are configured properly and working
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-25524
>                 URL: https://issues.apache.org/jira/browse/HBASE-25524
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance, regionserver, Usability
>    Affects Versions: 3.0.0-alpha-1, 2.3.0, 2.4.0
>            Reporter: Nick Dimiduk
>            Assignee: Rahul Kumar
>            Priority: Major
>
> Going through the exercise of confirming short-circuit reads turns out to be quite a chore. 2.3.0 added a new metric, but metrics only get tickled when there's traffic that happens to use the feature. This is not very convenient for an operator who has taken a cluster out of service for maintenance.
> It would be nice if the rs process could perform some test and emitted some confirmation of the status of this otherwise transparent feature. After confirmation, it could light up a boolean metric value and/or add mention of it to the info page.



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