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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3129) Fix Min/Avg/Max Values for FS Latency Metrics
Date Tue, 19 Oct 2010 21:31:30 GMT
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: 0.89.20100924, 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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