[ZOOKEEPER-3844] Add useful metrics for ZK servers

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.6.2
• Component/s: metric system
• Assignee: Jie Huang
• Reporter: Jie Huang
• Created: 21/May/20 17:43
• Updated: 10/Sep/20 10:43
• Resolved: 21/Aug/20 11:48

Description

In ZOOKEEPER-3245, we upstreamed metrics that we use to monitor and debug Zookeeper. We have introduced more metrics since then, which will be upstreamed in this JIRA.

Sub-Tasks

• Add metric JVM_PAUSE_TIME: Closed
• Add a couple TLS related metrics: Closed
• Add a couple metrics to help track Netty memory usage: Closed
• Add a couple metrics to track inflight diff syncs and snap syncs: Closed
• Add a couple request processor metrics: Closed