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https://issues.apache.org/jira/browse/HBASE-15519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17164035#comment-17164035
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Michael Stack commented on HBASE-15519:
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Let me set the default as off. It seems like the lossy counters can come and
go. In a little test cluster I see they rise and fall but even still.. I see
instances of 40 threads which seems a bunch for counting. In my prod situation,
there's a steady 140+ threads doing lossycounting which is a bit over the top.
> Add per-user metrics
> ---------------------
>
> Key: HBASE-15519
> URL: https://issues.apache.org/jira/browse/HBASE-15519
> Project: HBase
> Issue Type: Sub-task
> Components: metrics
> Affects Versions: 1.2.0
> Reporter: Enis Soztutar
> Assignee: Ankit Singhal
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.3.0
>
> Attachments: HBASE-15519.master.003.patch, hbase-15519_v0.patch,
> hbase-15519_v1.patch, hbase-15519_v1.patch, hbase-15519_v2.patch
>
>
> Per-user metrics will be useful in multi-tenant cases where we can emit
> number of requests, operations, num RPCs etc at the per-user aggregate level
> per regionserver. We currently have throttles per user, but no way to monitor
> resource usage per-user.
> Looking at these metrics, operators can adjust throttles, do capacity
> planning, etc per-user.
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