Expose per-region request rate metrics
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Key: HBASE-3614
URL: https://issues.apache.org/jira/browse/HBASE-3614
Project: HBase
Issue Type: Improvement
Components: metrics, regionserver
Reporter: Gary Helmling
Priority: Minor
We currently export metrics on request rates for each region server, and this
can help with identifying uneven load at a high level. But once you see a given
server under high load, you're forced to extrapolate based on your application
patterns and the data it's serving what the likely culprit is. This can and
should be much easier if we just exported request rate metrics per-region on
each server.
Dynamically updating the metrics keys based on assigned regions may pose some
minor challenges, but this seems a very valuable diagnostic tool to have
available.
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