Github user jerryshao commented on the issue:
https://github.com/apache/spark/pull/18690
I think it is because you don't configure metrics sink here, so by default
none of the metrics are reported.
For example if I enabled jmx sink
(`*.sink.jmx.class=org.apache.spark.metrics.sink.JmxSink`).
Then using jconsole to connect to shuffle service, then you will see it on
jconsole:
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