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Posted to issues@hbase.apache.org by "Yu Li (JIRA)" <ji...@apache.org> on 2016/01/25 10:18:39 UTC
[jira] [Created] (HBASE-15162) Add separate metrics for meta/data
block hit ratio in cache
Yu Li created HBASE-15162:
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Summary: 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: Improvement
Reporter: Yu Li
Assignee: Yu Li
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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