问题
While running Flink 1.5.0 with a local environment I was trying to get latency metrics via REST (with something similar to http://localhost:8081/jobs/e779dbbed0bfb25cd02348a2317dc8f1/vertices/e70bbd798b564e0a50e10e343f1ac56b/metrics) but there isn't any reference to latency.
All of this while the latency tracking is enabled which I confirmed by checking with the debugger that the LatencyMarksEmitter is emiting the marks.
What can I be doing wrong?
回答1:
In 1.5 latency metrics aren't exposed for tasks but for jobs instead, the reasoning being that latency metrics inherently contain information about multiple tasks. You have to query "http://localhost:8081/jobs/e779dbbed0bfb25cd02348a2317dc8f1/metrics" instead.
来源：https://stackoverflow.com/questions/50972168/flink-latency-metrics-not-being-shown