[HBASE-10048] Add hlog number metric in regionserver

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.98.0, 0.96.1, 0.94.15, 0.99.0
• Component/s: metrics
• Hadoop Flags: Reviewed
• Assignee: Shaohui Liu
• Reporter: Shaohui Liu
• Created: 27/Nov/13 11:49
• Updated: 16/Dec/13 18:46
• Resolved: 11/Dec/13 22:41

Description

Add hlog number metric in regionserver.

We can use this metric to alert about memstore flush because of too many hlogs.