[HBASE-2888] Review all our metrics

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: master, metrics
• Assignee: Unassigned
• Reporter: Jean-Daniel Cryans
• Created: 29/Jul/10 00:15
• Updated: 12/Jun/22 00:01
• Resolved: 19/Feb/15 19:03

Description

HBase publishes a bunch of metrics, some useful some wasteful, that should be improved to deliver a better ops experience. Examples:

• Block cache hit ratio converges at some point and stops moving
• fsReadLatency goes down when compactions are running
• storefileIndexSizeMB is the exact same number once a system is serving production load

We could use new metrics too.