[HDFS-13686] Add overall metrics for FSNamesystemLock

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10.0, 3.2.0, 3.1.1, 2.9.2, 3.0.4
• Component/s: hdfs, namenode
• Hadoop Flags: Reviewed
• Assignee: Lukas Majercak
• Reporter: Lukas Majercak
• Created: 15/Jun/18 18:14
• Updated: 13/Nov/18 11:39
• Resolved: 15/Jun/18 23:01

Description

Currently, we have R/W FSNamesystemLock metrics per operation. I'd be useful to have an overall metric too.

Issue Links

• relates to: HDFS-10872 Add MutableRate metrics for FSNamesystemLock operations