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Posted to dev@hbase.apache.org by "Jianwei Cui (JIRA)" <ji...@apache.org> on 2015/12/16 11:09:46 UTC

[jira] [Created] (HBASE-14992) Add cache stats of past n periods in region server status page

Jianwei Cui created HBASE-14992:
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             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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