1.5.0 / 1.5.0-beta.1

[utpilla]

OpenTelemetry

• Fixed a bug introduced by
  #4508 in
  1.5.0-rc.1 which caused the "Build" extension to return null when performing
  chained/fluent calls.
  (#4529)

• Marked Exemplars and related APIs internal as the spec for Exemplars is
  not stable yet. This would be added back in the 1.6.* prerelease versions
  right after 1.5.0 stable version is released.
  (#4533)

OpenTelemetry.Api.ProviderBuilderExtensions

• Added an IServiceCollection.ConfigureOpenTelemetryMeterProvider overload
  which may be used to configure MeterProviderBuilders while the
  IServiceCollection is modifiable (before the IServiceProvider has been
  created).
  (#4517)

OpenTelemetry.Exporter.Console

• Remove support for exporting Exemplars. This would be added back in the
  1.6.* prerelease versions right after 1.5.0 stable version is released.
  (#4533)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Remove support for exporting Exemplars. This would be added back in the
  1.6.* prerelease versions right after 1.5.0 stable version is released.
  (#4533)

OpenTelemetry.Instrumentation.AspNetCore

• Fix issue where baggage gets cleared when the ASP.NET Core Activity
  is stopped. The instrumentation no longer clears baggage. One problem
  this caused was that it prevented Activity processors from accessing baggage
  during their OnEnd call.
  (#4274)

• Added direct reference to System.Text.Encodings.Web with minimum version of
  4.7.2 due to CVE-2021-26701.
  This impacts target frameworks netstandard2.0 and netstandard2.1 which has a
  reference to Microsoft.AspNetCore.Http.Abstractions that depends on
  System.Text.Encodings.Web >= 4.5.0.
  (#4399)

• Improve perf by avoiding boxing of common status codes values.
  (#4360,
  #4363)

OpenTelemetry.Instrumentation.Http

• Fixed an issue of missing http.client.duration metric data in case of
  network failures (when response is not available).
  (#4098)

• Improve perf by avoiding boxing of common status codes values.
  (#4361,
  #4363)

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This discussion was created from the release 1.5.0 / 1.5.0-beta.1.

[tomotvos]

Looking over the changes, it seems like 1.5 is primarily a bug-fix version over 1.4. Do I have that right? Is there anything that is new?

[utpilla]

@tomotvos The major feature that got added in 1.5.0 is the support for Exponential Histograms.

The changes shown here are added on top of what was already added to the previous 1.5.0-rc.1 release. To look for all the changes that were added in 1.5.0, you would have to look at the changes made in all the previous 1.5 prerelease versions as well. (1.5.0-rc.1, 1.5.0-alpha.2, 1.5.0-alpha.1).

[tomotvos]

Ok thanks. Is there another README somewhere that mentions this, or is the expectation that we UNION all the changes ourselves? Asking for a friend...