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Elliott Clark commented on HBASE-15643:
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-1 No map lookups in the hot code paths.
> Need metrics of cache hit ratio, etc for one table
> --------------------------------------------------
>
> Key: HBASE-15643
> URL: https://issues.apache.org/jira/browse/HBASE-15643
> Project: HBase
> Issue Type: Improvement
> Reporter: Heng Chen
> Assignee: Alicia Ying Shu
> Attachments: HBASE-15643.patch
>
>
> There are many tables on our cluster, only some of them need to be read online.
> We could improve the performance of read by cache, but we need some metrics for it at
table level. There are a few we can collect: BlockCacheCount, BlockCacheSize, BlockCacheHitCount,
BlockCacheMissCount, BlockCacheHitPercent
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