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https://issues.apache.org/jira/browse/HBASE-3614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-3614:
-------------------------
Resolution: Fixed
Fix Version/s: 0.96.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed to trunk (936 tests passed, about same as in previous hangs). Thanks
for the patch Elliott. Let me open an issue against 0.94.1 for backporting to
see if we can get it in there.
> Expose per-region request rate metrics
> --------------------------------------
>
> Key: HBASE-3614
> URL: https://issues.apache.org/jira/browse/HBASE-3614
> Project: HBase
> Issue Type: Improvement
> Components: metrics, regionserver
> Reporter: Gary Helmling
> Assignee: Elliott Clark
> Priority: Minor
> Fix For: 0.96.0
>
> Attachments: HBASE-3614-0.patch, HBASE-3614-1.patch,
> HBASE-3614-2.patch, HBASE-3614-3.patch, HBASE-3614-4.patch,
> HBASE-3614-5.patch, HBASE-3614-6.patch, HBASE-3614-7.patch,
> HBASE-3614-8.patch, HBASE-3614-9.patch, Screen Shot 2012-04-17 at 2.41.27
> PM.png
>
>
> 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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