[FLINK-19010] Add a system metric to show the checkpoint restore time

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.18.0
• Component/s: Runtime / Checkpointing, Runtime / Metrics
• Labels: pull-request-available
• Assignee: Yanfei Lei
• Reporter: Zhinan Cheng
• Due: 31/Aug/20
• Created: 21/Aug/20 02:15
• Updated: 15/Aug/23 14:39
• Resolved: 20/Jul/23 07:33

Description

Now the system metric only shows the downtime when failure happens. It would be interesting to see the time to restore the checkpoint, so users can better understand the bottleneck of failure recovery.

Issue Links

• relates to: FLINK-25835 The task initialization duration is recorded in logs
• links to: GitHub Pull Request #22772