Nick Dimiduk created HBASE-25524:
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Summary: 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: 2.4.0, 2.3.0, 3.0.0-alpha-1
Reporter: Nick Dimiduk
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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