Hi, PIP-264 (approved Sep 2023) fixes many pitfalls of the current metric system inside Pulsar. We partly do so by adding another option of adding metrics: OpenTelemetry Java SDK, and then redefining the existing metrics using OTel.
The first part was adding OpenTelemetry Java SDK into Pulsar in this PR <https://github.com/apache/pulsar/pull/22010>. This was an implementation of (sub) PIP-320 and was contributed by Dragos Misca. The first metrics to be migrated are the lookup metrics, as contributed by this PR <https://github.com/apache/pulsar/pull/22058>, contributed by Dragos Misca. Take a look - feedback is appreciated. Thanks, Asaf
