Disclaimer: I work on OpenTelemetry specification and Collector.
It is true that the spec and libraries have been changing. This is to be expected since we haven't yet made a stable release. We are aiming for 1.0 GA release this year. The current plan is to freeze trace spec this week, followed by metric spec freeze in 3 weeks, followed by the release of several language implementations in 4 weeks after the spec freeze.
Like everyone else I wish we could release earlier, but the reality is that making dozens of companies agree on a standard takes time. I am very excited that we are approaching the finish line.
It is true that the spec and libraries have been changing. This is to be expected since we haven't yet made a stable release. We are aiming for 1.0 GA release this year. The current plan is to freeze trace spec this week, followed by metric spec freeze in 3 weeks, followed by the release of several language implementations in 4 weeks after the spec freeze.
Like everyone else I wish we could release earlier, but the reality is that making dozens of companies agree on a standard takes time. I am very excited that we are approaching the finish line.