[FLINK-7626] Add some metric description about checkpoints

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.2
• Fix Version/s: 1.3.4, 1.4.0
• Component/s: Documentation, Runtime / Metrics
• Assignee: Hai Zhou
• Reporter: Hai Zhou
• Created: 14/Sep/17 13:41
• Updated: 12/Mar/18 15:40
• Resolved: 12/Mar/18 15:40

Description

I export the metrics to the logfile via Slf4jReporter(https://issues.apache.org/jira/browse/FLINK-4831), and found that there are some checkpoint metrics that are not described in the document, so I added.

//Number of total checkpoints (in progress, completed, failed)
totalNumberOfCheckpoints

 //Number of in progress checkpoints.
numberOfInProgressCheckpoints

//Number of successfully completed checkpoints
numberOfCompletedCheckpoints

//Number of failed checkpoints.
numberOfFailedCheckpoints

//Timestamp when the checkpoint was restored at the coordinator.
lastCheckpointRestoreTimestamp

//Buffered bytes during alignment over all subtasks.
lastCheckpointAlignmentBuffered

Issue Links

• links to: GitHub Pull Request #4677