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From "Jianwei Cui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14992) Add cache stats of past n periods in region server status page
Date Wed, 16 Dec 2015 10:09:46 GMT
Jianwei Cui created HBASE-14992:
-----------------------------------

             Summary: Add cache stats of past n periods in region server status page
                 Key: HBASE-14992
                 URL: https://issues.apache.org/jira/browse/HBASE-14992
             Project: HBase
          Issue Type: Improvement
          Components: BlockCache, metrics
    Affects Versions: 2.0.0
            Reporter: Jianwei Cui
            Priority: Minor


The cache stats of past n periods, such as SumHitCountsPastNPeriods, SumHitCachingCountsPastNPeriods,
etc, 
are useful to indicate the real-time read load of region server, especially for temporary
read peak. It is helpful to add such metrics to BlockCache#Stats tab of region server status
page. Discussion and suggestion are welcomed.   



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