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https://issues.apache.org/jira/browse/HBASE-29171?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HBASE-29171 started by Eungsop Yoo.
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> Add a new region metric of read requests count on deleted or TTL expired
> records
> --------------------------------------------------------------------------------
>
> Key: HBASE-29171
> URL: https://issues.apache.org/jira/browse/HBASE-29171
> Project: HBase
> Issue Type: Improvement
> Components: metrics
> Reporter: Eungsop Yoo
> Assignee: Eungsop Yoo
> Priority: Major
> Labels: pull-request-available
>
> filteredReadRequestsCount region metric counts the read requests of records
> which is deleted, TTL expired and filtered all together. But we need the new
> count metric for the read requests of records which is deleted and TTL
> expired only. It can be used to distinguish the regions to be major
> compacted. Major compaction on these regions can mitigate the performance
> degradation of reading the deleted or TTL expired records.
> Additionally, I applied a bug fix that do not increase readRequstsCount when
> the result is empty.
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