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From "stack (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4989) Metrics to measure sequential reads and random reads separately
Date Mon, 12 Dec 2011 18:23:30 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-4989:
-------------------------

       Resolution: Fixed
    Fix Version/s: 0.94.0
     Hadoop Flags: Incompatible change,Reviewed  (was: Incompatible change)
           Status: Resolved  (was: Patch Available)

Applied to trunk.  Thanks for patch Dhruba.
                
> 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
>             Fix For: 0.94.0
>
>         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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