How to track latency in flink?

Question

In the doc, it says:

To enable the latency tracking you must set the latencyTrackingInterval to a positive number in either the Flink configuration or ExecutionConfig.

I do it as it says, then how can I get the latency value?

Answer 1

The latency values are job metrics, which you can access via the REST API at

http://localhost:8081/jobs/<job id>/metrics