[Fn][Observability] Status of OpenTelemetry metrics support (PIP-264/PIP-320)

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• I searched in the issues and found nothing similar.

Motivation

Background

Per PIP-264 and PIP-320 , it looks like Pulsar Functions metrics are still not integrated with OpenTelemetry in practice. Function Worker has PulsarWorkerOpenTelemetry creating a Meter, but Functions-related OTel metrics are not registered/emitted yet .

Question

Could someone clarify the current status of OpenTelemetry metrics for Pulsar Functions?

• If nobody is actively working on it, I’m happy to contribute.

Solution

No response

Alternatives

No response

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!