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https://issues.apache.org/jira/browse/HBASE-15162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15116378#comment-15116378
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Elliott Clark commented on HBASE-15162:
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isn't this just a dupe of HBASE-14983 ?
> Add separate metrics for meta/data block hit ratio in cache
> -----------------------------------------------------------
>
> Key: HBASE-15162
> URL: https://issues.apache.org/jira/browse/HBASE-15162
> Project: HBase
> Issue Type: Sub-task
> Reporter: Yu Li
> Assignee: Yu Li
> Attachments: HBASE-15162.patch, HBASE-15162_v2.patch
>
>
> Currently we already have a metrics in name of
> {{blockCacheExpressHitPercent}} to indicate the cache hit ratio. However,
> since meta block is small and often cached in memory with a high hit ratio,
> this "mixed" metrics could not show the real data block hit ratio which is
> more concerned.
> We propose to add two new metrics to show meta and data block cache hit ratio
> separately, while reserving the old metrics for backward compatibility.
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