[KAFKA-4374] Improve Response Errors Logging - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Minor
Resolution: Fixed
Affects Version/s: 0.10.0.1
Fix Version/s: 3.9.0
Component/s: clients
Labels:
None

Description

When NetworkClient.java gets a response error, it runs:

            if (response.errors().size() > 0) {
                log.warn("Error while fetching metadata with correlation id {} : {}", header.correlationId(), response.errors());
            }

Logging that at warn level and saying there is an error, is confusing to new people. They don't see it was a warn and not error level. They just see that it says "Error while...".

Maybe it should be something like "The metadata response from the cluster reported a recoverable issue..."