[HBASE-1729] Move cache stats out of RS log and into metrics

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Fix Version/s: 0.90.0
• Assignee: Unassigned
• Reporter: Michael Stack
• Created: 30/Jul/09 23:46
• Updated: 20/Nov/15 13:01
• Resolved: 27/Jul/10 19:59

Description

We log this every minute in RS logs:

2009-07-30 16:24:54,479 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Cache Stats: Sizes: Total=414.8218MB (434972192), Free=252.50949MB (264775392), Max=667.3313MB (699747584), Counts: Blocks=1106, Access=273562, Hit=271671, Miss=1891, Evictions=0, Evicted=0, Ratios: Hit Ratio=99.30874705314636%, Miss Ratio=0.691250991076231%, Evicted/Run=NaN

Thats a metric. Should be over in metrics. Metrics does some of above but not all. Extend it so just as comprehensive. Then we can see it ganglia, jmx, etc.