lhotari opened a new pull request #10193:
URL: https://github.com/apache/pulsar/pull/10193
### Motivation
PrometheusMetricsTest has been flaky with this type of error mesage:
`java.lang.AssertionError: line
pulsar_broker_publish_latency{cluster="test",quantile="0.0"} +Inf does not
match pattern ^(\w+)\{([^\}]+)\}\s(-?[\d\w\.-]+)(\s(\d+))?$ expected [true] but
found [false]`
The problem is that the metrics parsing hasn't properly handled `+Inf` which
is used as a value when there are no metrics.
### Modifications
Fix the regex pattern to handle `+Inf` and add tests.
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