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https://issues.apache.org/jira/browse/HBASE-24205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124990#comment-17124990
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ramkrishna.s.vasudevan commented on HBASE-24205:
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bq.Then I wonder if these Store-based accounts lose value if they are summed at
the Table level dropping their Region context.
We can sum it up at the region level also.
As we have Table vs Store , we can also have Region Vs Store. So instead of
the metric coming under a new Mbean sub=Stores, now it will come under the
existing Mbean sub=Regions except that a new metric along with the store name
will be added.
In that case we won't lose the value and ideally the sum of the 'Region Vs
Store' and the 'Table vs store' should match.
> 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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