open-telemetry/opentelemetry-dotnet core-1.21.0-rc.1

on GitHub

The following changes are from the previous release 1.20.1.

• NuGet: OpenTelemetry v1.21.0-rc.1

  • Fixed a race in the self-diagnostics sink dispatcher where disposing it
    while its pump thread was exiting could throw ArgumentNullException on
    .NET Framework.
    (#7983)

  • SelfDiagnosticsOptions is now automatically bound from the
    OpenTelemetry:SelfDiagnostics configuration section, when present.
    (#8008)

  • Fixed a race where collecting a metric with delta temporality concurrently
    with the creation of a new MetricPoint could reclaim the MetricPoint
    while it was being created, losing the measurement.
    (#8019)

  • Fixed a race where collecting a metric with delta temporality could export
    the same series twice in a single collection.
    (#8019)

  • Fixed wildcard matching timeouts that could prevent configured source, meter,
    legacy activity, or metric view patterns from matching.
    (#8014)

  • The timeout passed to MetricReader.Collect() (for example by
    MeterProvider.ForceFlush()), the ExportTimeoutMilliseconds of
    PeriodicExportingMetricReader and the ExporterTimeoutMilliseconds of
    BatchExportProcessor<T> are now made available to the exporter instead of
    being ignored once the export has started, so that the OTLP exporter can
    cancel an export which runs past the timeout. The ExportTimeoutMilliseconds
    of PeriodicExportingMetricReader now also limits exports which are not
    started by the reader itself, such as those of MeterProvider.ForceFlush().
    (#7996)

  • Fixed a race where collecting a cumulative metric concurrently with the
    creation of a new MetricPoint could export a MetricPoint that was not yet
    fully initialized, could case a NullReferenceException when enumerating Tags.
    (#8018)

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  • Added support for enabling ActivitySources from configuration using the
    Microsoft.Extensions.Diagnostics tracing APIs introduced in .NET 11 (for
    example, services.AddTracing(b => b.AddConfiguration(section))).
    Activities from sources enabled this way are processed by the OpenTelemetry
    TracerProvider registered through AddOpenTelemetry().WithTracing().
    Not supported when targeting net10.0.
    (#6899)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Api v1.21.0-rc.1

  No notable changes.

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.21.0-rc.1

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Console v1.21.0-rc.1

  • Fixed byte[]-valued tags being serialized as a JSON array of numbers
    (e.g. [1,2,3]) instead of being Base64-encoded as per the specification.
    (#7694)

  • Fixed array-valued tags containing NaN or infinite floating-point values
    being exported as TRUNCATED; such values are now written as JSON strings
    (e.g. ["NaN"]). Arrays and maps nested inside array-valued tags are now
    written as nested JSON (with byte[] values Base64-encoded) instead of as
    their .NET type name (e.g. System.Int32[]).
    (#7694)

  • Fixed arrays of string-valued key/value pairs being
    serialized as JSON arrays of strings instead of JSON objects.
    (#7694)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.InMemory v1.21.0-rc.1

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.OpenTelemetryProtocol v1.21.0-rc.1

  • Fixed experimental in-memory retries exceeding the export timeout when a
    retried request stalls.
    (#7977)

  • Breaking: The span status description (Activity.StatusDescription or
    the otel.status_description tag) is now truncated to the configured span
    attribute value length limit (for example
    OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT) instead of being exported in full.
    (#7995)

  • Redacted nonstandard OTLP endpoint paths in internal diagnostic logs with
    [REDACTED], while retaining standard HTTP and gRPC service paths.
    (#8016)

  • Fixed exports continuing until OtlpExporterOptions.TimeoutMilliseconds
    elapsed when a shorter timeout applied to them, such as the timeout passed
    to MeterProvider.ForceFlush(),
    PeriodicExportingMetricReaderOptions.ExportTimeoutMilliseconds
    (OTEL_METRIC_EXPORT_TIMEOUT) or
    BatchExportProcessorOptions<T>.ExporterTimeoutMilliseconds
    (OTEL_BSP_EXPORT_TIMEOUT, OTEL_BLRP_EXPORT_TIMEOUT). The request is now
    canceled when the shorter of the timeouts elapses. The time taken to
    serialize the telemetry now counts towards the timeout, and no request is
    sent once it has elapsed.
    (#7996)

  • Fixed arrays of string-valued key/value pairs being
    exported as arrays of strings instead of maps.
    (#7694)

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Zipkin v1.21.0-rc.1

  • Fixed array-valued tags containing NaN or infinite floating-point values
    being exported as TRUNCATED; such values are now written as JSON strings
    (e.g. ["NaN"]). Arrays and maps nested inside array-valued tags are now
    written as nested JSON (with byte[] values Base64-encoded) instead of as
    their .NET type name (e.g. System.Int32[]).
    (#7694)

  • Fixed arrays of string-valued key/value pairs being
    serialized as JSON arrays of strings instead of JSON objects.
    (#7694)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Extensions.Hosting v1.21.0-rc.1

  • The OpenTelemetry providers are now initialized in
    IHostedLifecycleService.StartingAsync instead of IHostedService.StartAsync
    so that telemetry emitted by other hosted services during StartingAsync is
    captured. ITelemetryHostInitializer.Initialize() is invoked only once per
    host start.
    (#7998)

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Extensions.Propagators v1.21.0-rc.1

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  See CHANGELOG for details.