[ZOOKEEPER-3439] Observability improvements on client / server connection close

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.6.0
• Fix Version/s: 3.6.0
• Component/s: server
• Labels: Twitter pull-request-available
• Assignee: Michael Han
• Reporter: Michael Han
• Created: 22/Jun/19 00:18
• Updated: 05/Jul/19 22:33
• Resolved: 02/Jul/19 22:45

Description

Currently when server close a client connection there is not enough information recorded (except few exception logs) which makes it hard to do postmortems. On the other side, having a complete view of the aggregated connection closing reason will provide more signals based on which we can better operate the clusters (e.g. predicate an incident might happen based on the trending of the connection closing reasons).

Issue Links

• links to: GitHub Pull Request #997