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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3129) Fix Min/Avg/Max Values for FS Latency Metrics
Date Tue, 09 Nov 2010 22:32:22 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930325#action_12930325
] 

Nicolas Spiegelberg commented on HBASE-3129:
--------------------------------------------

0.92 punt is fine

> Fix Min/Avg/Max Values for FS Latency Metrics
> ---------------------------------------------
>
>                 Key: HBASE-3129
>                 URL: https://issues.apache.org/jira/browse/HBASE-3129
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.89.20100924, 0.90.0
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>            Priority: Minor
>             Fix For: 0.90.0
>
>
> Currently RegionServer FS latency metrics are a little deceiving.  Because fs*Latency
is only updated during RegionServerMetrics::doUpdates, you are really getting the min/max
of the latency average over 'hbase.period' instead of the actual min/max outliers.  We should
refactor the code so we can display these outliers and reset them every 'hbase.period'

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