[jira] [Created] (FLINK-14065) Log metric name when the metric fails on registration/unregistration

[Zhilong Hong (Jira)]

Zhilong Hong created FLINK-14065:
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             Summary: Log metric name when the metric fails on 
registration/unregistration
                 Key: FLINK-14065
                 URL: https://issues.apache.org/jira/browse/FLINK-14065
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Metrics
    Affects Versions: 1.9.0
            Reporter: Zhilong Hong
             Fix For: 1.10.0


When MetricGroup registers Metrics in MetricRegistryImpl, sometimes the 
registration fails due to exceptions. However, currently it only logs {{"Error 
while registering metric" }}with no more information, which is inconvenient for 
users to troubleshoot which metric fails and why it fails.

Also, the warning log in registration and unregistration are both "{{Error 
while registering metric}}". This will lead users to confusion (although users 
can locate the correct place according to the call stack).

So I propose to log metric name when the metrics fails on 
registration/unregistration.



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