yufeiyan1220 commented on PR #13125:
URL: https://github.com/apache/kafka/pull/13125#issuecomment-1397837046
> Thanks for the PR and the issue @yufeiyan1220 - I wonder if the clean up
is necessary, as the metrics will be closed upon the client closing. Willing to
hear what others say.
I found that problem when I tried to create and close consumer frequently.
Just like the test case I have made in `KafkaConsumerTest.java`, these consumer
coordinator metrics are still present if I does not close these metrics
explicitly. I think most of users might not try to create and close consumer
frequently, but there is a potential for memory leak actually.
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