[FLINK-4840] Measure latency of record processing and expose it as a metric

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: Runtime / Metrics
• Labels: pull-request-available
• Assignee: zhuhaifeng
• Reporter: zhuhaifeng
• Created: 17/Oct/16 08:21
• Updated: 16/Oct/18 19:37
• Resolved: 16/Oct/18 19:37

Description

We should expose the following Metrics on the TaskIOMetricGroup:
1. recordProcessLatency(ms): Histogram measuring the processing time per record of a task. It is the processing time of chain if a chained task.
2. recordProcTimeProportion(ms): Meter measuring the proportion of record processing time for infor whether the main cost

Issue Links

• links to: GitHub Pull Request #2753
• links to: GitHub Pull Request #2753