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From "subramanian raghunathan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4215) RS requestsPerSecond counter seems to be off
Date Thu, 18 Aug 2011 13:47:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087014#comment-13087014

subramanian raghunathan commented on HBASE-4215:

In further to these understandindg , i was planning to unify the methodology of deriving the
"requestPerSecond" , so that HRsgionServer uses the APi of RegionServerMetrics (i.e) RegionServerMetrics.getRequests()
and initialise HServerLoad , but one desparity found was metricsState uses a float value whereas
HServerLoad uses an integer value to represent the same,It would be better to unify the data
type across them so that the master and region server UI are in sink.

Please sugest me which of them can be used and unified,i personally feel float is better but
the changes seem to be more.

Based on that i will provide the patch tommorow.

> RS requestsPerSecond counter seems to be off
> --------------------------------------------
>                 Key: HBASE-4215
>                 URL: https://issues.apache.org/jira/browse/HBASE-4215
>             Project: HBase
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 0.92.0
>            Reporter: Todd Lipcon
>            Assignee: ramkrishna.s.vasudevan
>            Priority: Critical
>             Fix For: 0.92.0
> In testing trunk, I had YCSB reporting some 40,000 requests/second, but the summary info
on the master webpage was consistently indicating somewhere around 3x that. I'm guessing that
we may have a bug where we forgot to divide by time.

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