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https://issues.apache.org/jira/browse/HBASE-3306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Gray updated HBASE-3306:
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Attachment: HBASE-3306-v1.patch
This patch just adds a new util class {{SlidingWindowMetric}} with according
TestSlidingWindowMetric unti test. Thinking of using this as the building
block for better block cache stats.
> Add better cache hit ratio statistics for LRU
> ---------------------------------------------
>
> Key: HBASE-3306
> URL: https://issues.apache.org/jira/browse/HBASE-3306
> Project: HBase
> Issue Type: Improvement
> Components: io, regionserver
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Fix For: 0.92.0
>
> Attachments: HBASE-3306-v1.patch
>
>
> Currently the hit ratio is a lifetime ratio. We should have some kind of
> rolling window stats, like ratio over the past hour.
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