Prometheus metrics does not work in 1.15.0 taskmanager

[陳昌倬]

Hi,

We found that taskmanager Prometheus endpoint does not work after
upgrading from 1.14.3 to 1.15.0. Jobmanager Prometheus endpoint is okay
in 1.15.0, so we think the problem is not in image we used. Any idea how
to fix this problem?


Also, we found the following log in taskmanager, but not jobmanager. Not
sure if they are related to this issue.

    2022-05-03 01:48:32,839 WARN  org.apache.flink.metrics.MetricGroup          
               [] - Name collision: Group already contains a Metric with the 
name 'numBytesInLocal'. Metric will not be reported.[10.210.47.134, 
taskmanager, <redacted>, <redacted>, <redacted>, 8, Shuffle, Netty, Input]
    2022-05-03 01:48:32,839 WARN  org.apache.flink.metrics.MetricGroup          
               [] - Name collision: Group already contains a Metric with the 
name 'numBytesInLocalPerSecond'. Metric will not be reported.[10.210.47.134, 
taskmanager, <refacted>, <redacted>, <redacted>, 8, Shuffle, Netty, Input]
    ...


-- 
ChangZhuo Chen (陳昌倬) czchen@{czchen,debian}.org
http://czchen.info/
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