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Hai Zhou commented on FLINK-7608: --------------------------------- Hi [~rmetzger], in org.apache.flink.streaming.api.operators.AbstractStreamOperator class: {code:java} /** * The gauge uses a HashMap internally to avoid classloading issues when accessing * the values using JMX. */ protected static class LatencyGauge implements Gauge<Map<String, HashMap<String, Double>>> { {code} But according to this log, I think this latency statistics metric class should be histogram instead of gauge. What's your opinion? Regards, Hai Zhou > LatencyGauge change to histogram metric > ---------------------------------------- > > Key: FLINK-7608 > URL: https://issues.apache.org/jira/browse/FLINK-7608 > Project: Flink > Issue Type: Bug > Components: Metrics > Reporter: Hai Zhou > Assignee: Hai Zhou > Fix For: 1.4.0, 1.3.3 > > > I used slf4jReporter[https://issues.apache.org/jira/browse/FLINK-4831] to > export metrics the log file. > I found: > {noformat} > -- Gauges > --------------------------------------------------------------------- > ...... > zhouhai-mbp.taskmanager.f3fd3a269c8c3da4e8319c8f6a201a57.Flink Streaming > Job.Map.0.latency: > value={LatencySourceDescriptor{vertexID=1, subtaskIndex=-1}={p99=116.0, > p50=59.5, min=11.0, max=116.0, p95=116.0, mean=61.833333333333336}} > zhouhai-mbp.taskmanager.f3fd3a269c8c3da4e8319c8f6a201a57.Flink Streaming > Job.Sink- Unnamed.0.latency: > value={LatencySourceDescriptor{vertexID=1, subtaskIndex=0}={p99=195.0, > p50=163.5, min=115.0, max=195.0, p95=195.0, mean=161.0}} > ...... > {noformat} -- This message was sent by Atlassian JIRA (v6.4.14#64029)