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https://issues.apache.org/jira/browse/HBASE-4989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HBASE-4989:
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Release Note: The metric fsReadLatency records the number of sequential
reads. The metric fsPreadLatency records the number of random reads.
Hadoop Flags: Incompatible change
Status: Patch Available (was: Open)
> Metrics to measure sequential reads and random reads separately
> ---------------------------------------------------------------
>
> Key: HBASE-4989
> URL: https://issues.apache.org/jira/browse/HBASE-4989
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Priority: Minor
> Attachments: metrics1.txt
>
>
> HBase does sequential reads for compactions and positional random reads for
> satisfying user's queries. It would be nice if we can measure their latencies
> separately. It is mostly the random reads that dominate a transactional
> workload.
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