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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3102) Enhance HRegionServerMetrics for Long-running Stats
Date Mon, 11 Oct 2010 05:14:32 GMT
Enhance HRegionServerMetrics for Long-running Stats

                 Key: HBASE-3102
                 URL: https://issues.apache.org/jira/browse/HBASE-3102
             Project: HBase
          Issue Type: Improvement
          Components: regionserver
            Reporter: Nicolas Spiegelberg
            Assignee: Nicolas Spiegelberg
             Fix For: 0.90.0

A useful metric to observe track is compaction count + duration. Since compactions are long
running and only happen infrequently, the avg/opcount stats are should be reset longer than
the default polling period (5 sec). In addition to 'hbase.period', we should allow a different
duration after which long-running metrics should expire. This would also fix our existing
metrics problem where min/max stats are never reset until the process is restarted/upgraded.

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