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Bump OpenTelemetry.Exporter.OpenTelemetryProtocol and 4 others#202
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@dependabot dependabot Bot commented on behalf of github Sep 19, 2026 •
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Pinned OpenTelemetry.Exporter.OpenTelemetryProtocol at 1.19.0.

Release notes

Sourced from OpenTelemetry.Exporter.OpenTelemetryProtocol's releases.

1.19.0

For highlights and announcements pertaining to this release see: Release Notes > 1.19.0.

The following changes are from the previous release 1.19.0-rc.1.

  • NuGet: OpenTelemetry v1.19.0

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0

... (truncated)

1.19.0-rc.1

The following changes are from the previous release 1.18.0.

  • NuGet: OpenTelemetry v1.19.0-rc.1

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0-rc.1

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0-rc.1

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0-rc.1

    • Extended key/value list attribute handling to cover additional dictionary shapes (IEnumerable<KeyValuePair<string, string?>> and IDictionary). These attributes will be serialized as JSON objects.
      (#​7679)
      ... (truncated)

1.19.0-beta.1

The following changes are from the previous release 1.18.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusAspNetCoreTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • A scrape request whose connection is aborted, or whose X-Prometheus-Scrape-Timeout-Seconds deadline elapses, now stops waiting for an in-progress metrics collection instead of continuing to wait for it to finish. The collection itself is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusHttpListenerTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • Added PrometheusHttpListenerOptions.ScrapeResponseTimeoutMilliseconds (default 60000) which bounds how long a scrape request waits for its response. X-Prometheus-Scrape-Timeout-Seconds request header values may only shorten this limit. The limit bounds the request's wait only: a metrics collection already running when it is reached is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Shims.OpenTracing v1.19.0-beta.1

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

1.18.0

For highlights and announcements pertaining to this release see: Release Notes > 1.18.0.

The following changes are from the previous release 1.17.0.

  • NuGet: OpenTelemetry v1.18.0

    • Fixed self-diagnostics log lines being silently dropped when an event message or parameter contained enough 3-byte UTF-8 characters to overflow the internal buffer estimate. Such content is now truncated.
      (#​7543)

    • Fixed activity creation throwing when multiple tracer providers return a sampler attribute with the same key.
      (#​7558)

    • Added the otel.sdk.processor.log.processed SDK self-observability metric.
      (#​7486)

    • Added the otel.sdk.processor.span.processed SDK self-observability metric.
      (#​7598)

    • BatchActivityExportProcessor and SimpleActivityExportProcessor no longer forward spans to the exporter once Shutdown has been called, and BatchActivityExportProcessor.Shutdown now waits for in-flight OnEnd calls to finish enqueueing before flushing.
      (#​7598)

    • Fix logger, meter and tracer providers leaking background threads if an exception is thrown by their constructor after resource creation.
      (#​7615)

    • CircularBufferBuckets.Copy optimized to use bulk array copies.
      (#​7670)

    • Restored configured MaxScale after delta exponential histogram collection.
      (#​7671)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.18.0

    • Avoid formatting exceptions and creating exception attributes when RecordException is called on a span that is not recorded.
      (#​7669)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.18.0

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.18.0

    • Added support for serializing attribute values that are key/value lists (IEnumerable<KeyValuePair<string, object?>>). These attributes will be serialized as JSON objects.
      (#​7015)

... (truncated)

1.18.0-rc.1

The following changes are from the previous release 1.17.0.

  • NuGet: OpenTelemetry v1.18.0-rc.1

    • Fixed self-diagnostics log lines being silently dropped when an event message or parameter contained enough 3-byte UTF-8 characters to overflow the internal buffer estimate. Such content is now truncated.
      (#​7543)

    • Fixed activity creation throwing when multiple tracer providers return a sampler attribute with the same key.
      (#​7558)

    • Added the otel.sdk.processor.log.processed SDK self-observability metric.
      (#​7486)

    • Added the otel.sdk.processor.span.processed SDK self-observability metric.
      (#​7598)

    • BatchActivityExportProcessor and SimpleActivityExportProcessor no longer forward spans to the exporter once Shutdown has been called, and BatchActivityExportProcessor.Shutdown now waits for in-flight OnEnd calls to finish enqueueing before flushing.
      (#​7598)

    • Fix logger, meter and tracer providers leaking background threads if an exception is thrown by their constructor after resource creation.
      (#​7615)

    • CircularBufferBuckets.Copy optimized to use bulk array copies.
      (#​7670)

    • Restored configured MaxScale after delta exponential histogram collection.
      (#​7671)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.18.0-rc.1

    • Avoid formatting exceptions and creating exception attributes when RecordException is called on a span that is not recorded.
      (#​7669)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.18.0-rc.1

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.18.0-rc.1

    • Added support for serializing attribute values that are key/value lists (IEnumerable<KeyValuePair<string, object?>>). These attributes will be serialized as JSON objects.
      (#​7015)

    See CHANGELOG for details.

... (truncated)

1.18.0-beta.1

The following changes are from the previous release 1.17.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.18.0-beta.1

    • Fix concurrent scrapes returning an empty response under contention. Now the exporter will return an HTTP 500 error instead.
      (#​7571)

    • Waiting for concurrent scrapes to finish before collecting no longer blocks, which could stall concurrent scrapes being waited on.
      (#​7571)

    • Fixed the interaction between PrometheusAspNetCoreOptions.TranslationStrategy and content negotiation. The configured strategy is now applied before content negotiation, instead of the negotiated escaping scheme replacing the strategy's, and the Content-Type header now reports the escaping scheme that was applied rather than the one that was negotiated.
      (#​7610)

    • Fixed metric values and histogram bucket bounds being written with 17 significant digits instead of their shortest round-trippable representation.
      (#​7589)

    • Fixed the canonical representation used for histogram le and summary quantile label values falling back to 17 significant digits incorrectly.
      (#​7589)

    • Fixed a race where a slow scrape could return an HTTP 200 instead of 408.
      (#​7615)

    • Updated OpenTelemetry core component version(s) to 1.18.0.
      (#​7674)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.18.0-beta.1

    • Fix concurrent scrapes returning an empty response under contention. Now the exporter will return an HTTP 500 error instead.
      (#​7571)

    • Waiting for concurrent scrapes to finish before collecting no longer blocks, which could stall concurrent scrapes being waited on.
      (#​7571)

    • A scrape which is still collecting when the listener is disposed now returns an HTTP 503 response.
      (#​7587)

    • Shutting down the listener no longer waits indefinitely for its request processing loop to stop, and no longer throws if the loop faulted.
      (#​7587)

    • Fixed the interaction between PrometheusHttpListenerOptions.TranslationStrategy and content negotiation. The configured strategy is now applied before content negotiation, instead of the negotiated escaping scheme replacing the strategy's, and the Content-Type header now reports the escaping scheme that was applied rather than the one that was negotiated.
      (#​7610)

    • Fixed metric values and histogram bucket bounds being written with 17 significant digits instead of their shortest round-trippable representation.
      (#​7589)

    • Fixed the canonical representation used for histogram le and summary quantile label values falling back to 17 significant digits incorrectly.
      (#​7589)

... (truncated)

1.17.0

For highlights and announcements pertaining to this release see: Release Notes > 1.17.0.

The following changes are from the previous release 1.17.0-rc.1.

... (truncated)

1.17.0-rc.1

The following changes are from the previous release 1.16.0.

  • NuGet: OpenTelemetry v1.17.0-rc.1

    • Fixed a metric point reclaim data race on CPU ARM architectures.
      (#​7401)

    • The library is now marked as trim and AOT compatible.
      (#​7441)

    • Replaced the vendored copy of
      EnvironmentVariablesConfigurationProvider with a direct
      Microsoft.Extensions.Configuration.EnvironmentVariables package dependency.
      Consumers gain automatic pickup of upstream bug fixes and security patches;
      no public API or behavioural change.
      (#​7146)

    • Added a verbose OpenTelemetry-Sdk self-diagnostics event that is emitted
      when an activity is dropped because its local (in-process) parent is not
      recorded.
      (#​7427)

    • Added support for a Schema URL on Resource instances.
      (#​7472)

    • Fixed a metric storage leak that occurred when meters and instruments were
      repeatedly created and disposed.
      (#​7466)

    • Added ExcludedTagKeys property to MetricStreamConfiguration to support
      excluding specific tag keys from metric streams.
      (#​7373)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.17.0-rc.1

    • Fixed TraceContextPropagator to normalize empty tracestate header values
      to null when extracting trace context.
      (#​7407,
      #​7433)

    • The library is now marked as trim and AOT compatible.
      (#​7441)

    • Experimental (pre-release builds only): Updated EnvironmentVariableCarrier.Get
      to read only the normalized environment variable name, following the updated
      environment variable carrier specification.
      Non-normalized carrier keys are no longer matched, even when they would
      normalize to the requested key.
      ... (truncated)

1.17.0-beta.1

The following changes are from the previous release 1.16.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.17.0-beta.1

    • Added a verbose-level diagnostic event for ignored metrics.
      (#​7429)

    • The library is now marked as trim and AOT compatible.
      (#​7441)

    • Fix double unit suffixes in metric names when using OpenMetrics.
      (#​7454)

    • Fix incorrect handling of leading digits in metric names for OpenMetrics.
      (#​7454)

    • Add PrometheusAspNetCoreOptions.ScopeInfoEnabled property to enable or
      disable scope labels in Prometheus metrics. Defaults to true.
      (#​7436)

    • Added support for the dots and values Prometheus UTF-8 name escaping
      schemes when negotiated via the Accept header.
      (#​7439)

    • Add PrometheusAspNetCoreOptions.TargetInfoEnabled property to enable or
      disable the target_info metric in Prometheus metrics. Defaults to true.
      (#​7438)

    • Added support for the allow-utf-8 Prometheus UTF-8 name escaping scheme
      when negotiated via the Accept header.
      (#​7440)

    • Add PrometheusAspNetCoreOptions.ResourceConstantLabels property to select
      resource attributes to add to each metric as constant labels. Defaults to
      null (no resource attributes are added as metric labels).
      (#​7471)

    • Add PrometheusAspNetCoreOptions.MaxScrapeResponseSizeBytes to configure
      the maximum size of a scrape response. The default is now ~166 MiB.
      (#​7487)

    • A scrape whose serialized output exceeds the maximum scrape response size
      limit now responds with HTTP 500.
      (#​7487)

    • Fixed the Prometheus text exposition format emitting redundant comments.
      (#​7491)

    • Made Accept header content negotiation consistent with the
      PrometheusHttpListener endpoint.
      ... (truncated)

1.16.0

For highlights and announcements pertaining to this release see: Release Notes > 1.16.0.

The following changes are from the previous release 1.16.0-rc.1.

... (truncated)

1.16.0-rc.1

The following changes are from the previous release 1.15.3.

  • NuGet: OpenTelemetry v1.16.0-rc.1

    • Stop validating View-provided metric stream Name against the instrument
      name syntax, per
      spec clarification.
      (#​7300)

    • Fix incorrect validation of OTEL_BSP_* and OTEL_BLRP_* environment
      variables.
      (#​7187)

    • Fix observable instrument callbacks running once per reader instead of
      once per collection cycle.
      (#​7188)

    • Added exception safety for user-supplied ExemplarReservoir implementations.
      Exceptions thrown from Offer are now caught and logged rather than propagating
      out of Counter.Add/Histogram.Record.
      (#​7277)

    • Update OpenTelemetrySdkEventSource to support the W3C randomness flag.
      (#​7301)

    • Added ObservedTimestamp property to LogRecord.
      (#​6979)

    • Breaking Change Explicit histogram boundaries no longer allow more than
      10 million values.
      (#​7165)

    • Fixed a circular reference which could cause a LoggerProvider to fail to
      resolve when one of its dependencies depends on ILogger or ILoggerFactory.
      As part of this fix the LoggerProvider resolved from dependency injection
      is now created lazily when the first logger is created rather than when
      ILoggerProvider or ILoggerFactory is resolved. A consequence is that any
      invalid configuration now surfaces when the first log record is written instead
      of when the logging services are resolved.
      (#​7308)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.16.0-rc.1

    • Experimental (pre-release builds only):
      Add support for using environment variables as context propagation carriers.
      (#​7174)

    • Fix BaggagePropagator to correctly follow Key and Value Encoding rules as per
      ... (truncated)

1.16.0-beta.1

The following changes are from the previous release 1.15.3-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.16.0-beta.1

    • Fixed scrape response cache freshness using monotonic time so it is not
      affected by NTP system clock adjustments.
      (#​7253)

    • Breaking Change Removed DisableTimestamp property from
      PrometheusAspNetCoreOptions.
      (#​7176)

    • Fixed the serialization of NaN, PositiveInfinity, and NegativeInfinity
      values in Prometheus metrics to be compliant with the specification.
      (#​7179)

    • Fixed loss of precision when serializing double and float values in
      Prometheus metrics to be compliant with the specification by using 17
      significant digits to represent such values.
      (#​7179)

    • Fix non-ASCII characters in metric names and unit strings not being sanitized
      correctly during Prometheus serialization.
      (#​7184)

    • Fix case where reader tracking could be reset while readers were still active.
      (#​7190)

    • Improve Accept header handling for format negotiation so OpenMetrics is
      selected correctly by considering whitespace and q weights.
      (#​7208)

    • Emit OpenMetrics exemplars for counters and histogram buckets.
      (#​7222)

    • Fix incorrect handling of untyped metrics when using OpenMetrics format.
      (#​7219)

    • Fix Prometheus/OpenMetrics serialization to emit metric and label names
      containing _ instead of dropping them and prefixing leading digits.
      Invalid characters are replaced with _ instead of being dropped.
      (#​7209)

    • Add escaping=underscores to the Accept header handling for content
      negotiation so OpenMetrics are handled correctly.
      (#​7209)

    • Omit histogram _sum and _count in OpenMetrics when negative bucket
      thresholds are present.
      (#​7221)
      ... (truncated)

Commits viewable in compare view.

Pinned OpenTelemetry.Exporter.OpenTelemetryProtocol at 1.19.0.

Release notes

Sourced from OpenTelemetry.Exporter.OpenTelemetryProtocol's releases.

1.19.0

For highlights and announcements pertaining to this release see: Release Notes > 1.19.0.

The following changes are from the previous release 1.19.0-rc.1.

  • NuGet: OpenTelemetry v1.19.0

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0

... (truncated)

1.19.0-rc.1

The following changes are from the previous release 1.18.0.

  • NuGet: OpenTelemetry v1.19.0-rc.1

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0-rc.1

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0-rc.1

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0-rc.1

    • Extended key/value list attribute handling to cover additional dictionary shapes (IEnumerable<KeyValuePair<string, string?>> and IDictionary). These attributes will be serialized as JSON objects.
      (#​7679)
      ... (truncated)

1.19.0-beta.1

The following changes are from the previous release 1.18.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusAspNetCoreTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • A scrape request whose connection is aborted, or whose X-Prometheus-Scrape-Timeout-Seconds deadline elapses, now stops waiting for an in-progress metrics collection instead of continuing to wait for it to finish. The collection itself is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusHttpListenerTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • Added PrometheusHttpListenerOptions.ScrapeResponseTimeoutMilliseconds (default 60000) which bounds how long a scrape request waits for its response. X-Prometheus-Scrape-Timeout-Seconds request header values may only shorten this limit. The limit bounds the request's wait only: a metrics collection already running when it is reached is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Shims.OpenTracing v1.19.0-beta.1

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

Commits viewable in compare view.

Pinned OpenTelemetry.Extensions.Hosting at 1.19.0.

Release notes

Sourced from OpenTelemetry.Extensions.Hosting's releases.

1.19.0

For highlights and announcements pertaining to this release see: Release Notes > 1.19.0.

The following changes are from the previous release 1.19.0-rc.1.

  • NuGet: OpenTelemetry v1.19.0

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0

... (truncated)

1.19.0-rc.1

The following changes are from the previous release 1.18.0.

  • NuGet: OpenTelemetry v1.19.0-rc.1

    • Added Schema URL to internally created Resource instances.
      (#​7726)

    • Reduced allocations when formatting self-diagnostics events with up to three parameters.
      (#​7730)

    • Added AlwaysRecordSampler.
      (#​7695)

    • Fixed CircularBufferBuckets so the first delta histogram insertion after a reset does not result in an unnecessary scale reduction.
      (#​7749)

    • Improved wildcard source/meter name matching to avoid excessive matching time at runtime.
      (#​7760)

    • Fixed lazy logger provider builds after a failure from reusing partially initialized provider state.
      (#​7761)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.19.0-rc.1

    • Reduced allocations when creating log record attributes from an array.
      (#​7699)

    • Reduced allocations when setting baggage through the params overload.
      (#​7697)

    • Reduced allocations when constructing SpanAttributes from an array.
      (#​7698)

    • Fixed parsing of an inbound tracestate header whose member value trimmed to an empty value that previously threw an IndexOutOfRangeException internally and could silently truncate the tracestate.
      (#​7756)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.19.0-rc.1

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.19.0-rc.1

    • Extended key/value list attribute handling to cover additional dictionary shapes (IEnumerable<KeyValuePair<string, string?>> and IDictionary). These attributes will be serialized as JSON objects.
      (#​7679)
      ... (truncated)

1.19.0-beta.1

The following changes are from the previous release 1.18.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusAspNetCoreTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • A scrape request whose connection is aborted, or whose X-Prometheus-Scrape-Timeout-Seconds deadline elapses, now stops waiting for an in-progress metrics collection instead of continuing to wait for it to finish. The collection itself is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.19.0-beta.1

    • Breaking Change The PrometheusTranslationStrategy enum was renamed to PrometheusHttpListenerTranslationStrategy.
      (#​7751)

    • Fixed OpenMetrics _created series being emitted for metric points with a default start time.
      (#​7754)

    • Prometheus text/OpenMetrics escaping of label values, label names and help text is now more efficient.
      (#​7758)

    • Added PrometheusHttpListenerOptions.ScrapeResponseTimeoutMilliseconds (default 60000) which bounds how long a scrape request waits for its response. X-Prometheus-Scrape-Timeout-Seconds request header values may only shorten this limit. The limit bounds the request's wait only: a metrics collection already running when it is reached is not cancelled and continues running in the background.
      (#​7757)

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Shims.OpenTracing v1.19.0-beta.1

    • Updated OpenTelemetry core component version(s) to 1.19.0.
      (#​7785)

    See CHANGELOG for details.

1.18.0

For highlights and announcements pertaining to this release see: Release Notes > 1.18.0.

The following changes are from the previous release 1.17.0.

  • NuGet: OpenTelemetry v1.18.0

    • Fixed self-diagnostics log lines being silently dropped when an event message or parameter contained enough 3-byte UTF-8 characters to overflow the internal buffer estimate. Such content is now truncated.
      (#​7543)

    • Fixed activity creation throwing when multiple tracer providers return a sampler attribute with the same key.
      (#​7558)

    • Added the otel.sdk.processor.log.processed SDK self-observability metric.
      (#​7486)

    • Added the otel.sdk.processor.span.processed SDK self-observability metric.
      (#​7598)

    • BatchActivityExportProcessor and SimpleActivityExportProcessor no longer forward spans to the exporter once Shutdown has been called, and BatchActivityExportProcessor.Shutdown now waits for in-flight OnEnd calls to finish enqueueing before flushing.
      (#​7598)

    • Fix logger, meter and tracer providers leaking background threads if an exception is thrown by their constructor after resource creation.
      (#​7615)

    • CircularBufferBuckets.Copy optimized to use bulk array copies.
      (#​7670)

    • Restored configured MaxScale after delta exponential histogram collection.
      (#​7671)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.18.0

    • Avoid formatting exceptions and creating exception attributes when RecordException is called on a span that is not recorded.
      (#​7669)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.18.0

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.18.0

    • Added support for serializing attribute values that are key/value lists (IEnumerable<KeyValuePair<string, object?>>). These attributes will be serialized as JSON objects.
      (#​7015)

... (truncated)

1.18.0-rc.1

The following changes are from the previous release 1.17.0.

  • NuGet: OpenTelemetry v1.18.0-rc.1

    • Fixed self-diagnostics log lines being silently dropped when an event message or parameter contained enough 3-byte UTF-8 characters to overflow the internal buffer estimate. Such content is now truncated.
      (#​7543)

    • Fixed activity creation throwing when multiple tracer providers return a sampler attribute with the same key.
      (#​7558)

    • Added the otel.sdk.processor.log.processed SDK self-observability metric.
      (#​7486)

    • Added the otel.sdk.processor.span.processed SDK self-observability metric.
      (#​7598)

    • BatchActivityExportProcessor and SimpleActivityExportProcessor no longer forward spans to the exporter once Shutdown has been called, and BatchActivityExportProcessor.Shutdown now waits for in-flight OnEnd calls to finish enqueueing before flushing.
      (#​7598)

    • Fix logger, meter and tracer providers leaking background threads if an exception is thrown by their constructor after resource creation.
      (#​7615)

    • CircularBufferBuckets.Copy optimized to use bulk array copies.
      (#​7670)

    • Restored configured MaxScale after delta exponential histogram collection.
      (#​7671)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api v1.18.0-rc.1

    • Avoid formatting exceptions and creating exception attributes when RecordException is called on a span that is not recorded.
      (#​7669)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.18.0-rc.1

    No notable changes.

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Console v1.18.0-rc.1

Description has been truncated

@dependabot dependabot Bot added the Dependencies Pull requests that update dependencies. label Sep 19, 2026
@dependabot
Bump OpenTelemetry.Exporter.OpenTelemetryProtocol and 4 others
41d4171 
Bumps OpenTelemetry.Exporter.OpenTelemetryProtocol to 1.19.0
Bumps OpenTelemetry.Extensions.Hosting to 1.19.0
Bumps OpenTelemetry.Instrumentation.AspNetCore from 1.18.0 to 1.19.0
Bumps OpenTelemetry.Instrumentation.Http from 1.18.0 to 1.19.0
Bumps OpenTelemetry.Instrumentation.Runtime from 1.18.0 to 1.19.0

---
updated-dependencies:
- dependency-name: OpenTelemetry.Exporter.OpenTelemetryProtocol
  dependency-version: 1.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: opentelemetry
- dependency-name: OpenTelemetry.Extensions.Hosting
  dependency-version: 1.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: opentelemetry
- dependency-name: OpenTelemetry.Instrumentation.AspNetCore
  dependency-version: 1.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: opentelemetry
- dependency-name: OpenTelemetry.Instrumentation.Http
  dependency-version: 1.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: opentelemetry
- dependency-name: OpenTelemetry.Instrumentation.Runtime
  dependency-version: 1.19.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: opentelemetry
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot changed the title Bump the opentelemetry group with 5 updates Bump OpenTelemetry.Exporter.OpenTelemetryProtocol and 4 others Sep 20, 2026
@dependabot
dependabot Bot force-pushed the dependabot/nuget/opentelemetry-7cb2616b21 branch from 4a22836 to 41d4171 Compare September 20, 2026 05:58
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