telemetry

Similar to open-telemetry/opentelemetry-dotnet#2138, we can cut .NET Core 2.1 from support matrix, as .NET Core 2.1 is end of life next month (https://devblogs.microsoft.com/dotnet/net-core-2-1-will-reach-end-of-support-on-august-21-2021/).

Since most of the projects list NETSTANDARD2.0 as the supported one, and not .NETCore2.1, the changes may be minimal, and mostly r

Consolidating thread on all open plugin requests.

All issues need help if you'd like to contribute to the project 😃

The documentation on writing a plugin can be found here.

• Umami DavidWells/analytics#149
• Firebase DavidWells/analytics#133
• Plausible https://gith

The current getting started guide assumes the user will be starting using the SDK building block packages like tracing, node, and metrics. In the future, it is expected most users will use the SDK package as a starting point and it would be better for the getting started guide to reflect that.

For some uses cases it would be useful to have an option in the gr_satellites command line tool that skips the demodulator and sends the input the directly to the deframer.

as mentioned in the UPDATING file, there are some domains in the list that represent the same domain but differ by a commonly confused character (like dashes, em dashes, and en dashes). Theres also a few that look like two characters smushed together (I think there's one like that for fi in a couple places). These are likely due to copy-paste errors or from parsing the PDF, however I want to be

See open-telemetry/opentelemetry-specification#1492.

In the following code we should check that the links each have a valid span context, and remove any with an invalid span context. https://github.com/open-telemetry/opentelemetry-ruby/blob/f6d156353a838f47daf167156c9b861b7eac2c30/sdk/lib/opentelemetry/sdk/trace/span.rb#L327-L344

Actually, opentelemetry-java allows user to customize the metadata in the header, which is convenient to implement our own authentication in collector, any plan for cpp? Thank you.

Is your feature request related to a problem?
No.

Describe the solution you'd like
Provide the ability to customize the gRPC header.

Describe alternatives you've considered
No.

**Additional co