Hi, In 10.0 we shipped a brand new metrics system powered by OTEL instrumentation. It has diferent metric names, and is not backward compatible with the solr exporter from 9.x We are in the process of building some Grafana boards for it, which uncover needs for some changes. We decided to change internal and OTLP metric names from underscore to dot separators (https://github.com/apache/solr/pull/4223) to align with OTEL semantic conventions. We found two metrics that are pure duplicates with different names.
Clearly, there is a need for some changes and stabilization of this brand new feature. Looking back we should have declared the feature as BETA and experimental in 10.0, but we did not. I therefore propose that we declare it a BETA feature now, by adding a disclaimer in Ref Guide and send an [ANNOUNCE] email to the lists. As 10.0 is still brand new and likely not yet in production many places, and even fewer depending on the new metrics names, we could retroactively delcare it BETA from version 10.0. That will allow us to tweak things in the next few minor versions. Perhaps we want to rename a few metrics with better names. Perhaps some need to change slightly. It is unfortunate to do such things after a release, but it is better to do it now when 19.0 is still fresh. The longer we wait the harder to justify changes. If the PMC agrees (I don't think we need a vote), I can draft an announce mail and a PR against branch_10_0 ref guide. Jan --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
