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https://issues.apache.org/jira/browse/HBASE-24205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17125533#comment-17125533
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ramkrishna.s.vasudevan commented on HBASE-24205:
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bq.Will make it awkward summing by table
Summing per region and per table is bit awkward like we need to group them
using a map. Rest of the metrics is just summations. This is ok I believe
considering the simplicity of the patch.
bq.The name will be long (smile).
Its like making 'something already long longer' (smile). It will just add the
Store_<storename>.
But I think we need to do that or we should be giving the details per region
per store under an Mbean only.
> Create metric to know the number of reads that happens from memstore
> --------------------------------------------------------------------
>
> Key: HBASE-24205
> URL: https://issues.apache.org/jira/browse/HBASE-24205
> Project: HBase
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 3.0.0-alpha-1
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.3.0, 2.2.6
>
> Attachments: screenshot.png, screenshot_tablevscf.png
>
>
> A metric to identify number of reads that were served from memstore (atleast
> if the gets can be accounted for) then it gives a value addition to know if
> among the reads how much was targeted at the most recent data.
> Currently the existing metric framework at region level should be enough but
> we can also add a metric per store level. That will be more granular.
> We can also expose this via HbTop.
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