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Bump OpenTelemetry.Extensions.Hosting from 1.20.0 to 1.20.1 - #3381

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Oct 21, 2026
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dependabot/nuget/BervProject.WebApi.Boilerplate.ServiceDefaults/OpenTelemetry.Extensions.Hosting-1.20.1

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Updated OpenTelemetry.Extensions.Hosting from 1.20.0 to 1.20.1.

Release notes

Sourced from OpenTelemetry.Extensions.Hosting's releases.

1.20.1

For highlights and announcements pertaining to this release see: Release Notes > 1.20.1.

The following changes are from the previous release 1.20.0.

  • NuGet: OpenTelemetry v1.20.1

    • Fixed a possible race condition on ARM64 when multiple threads record the
      first measurement with no tags, or the first overflow measurement, that could
      cause the measurement to be recorded incorrectly.
      (#​7951)

    • Fixed self-diagnostics preamble redaction of quoted or encoded PEM material
      and prefixed JWTs.
      (#​7955)

    • Fixed default HTTP client log filtering when registering the OTLP log exporter
      through OpenTelemetryLoggerOptions.
      (#​7959)

    • Fixed legacy self-diagnostics logging terminating the process when the log
      file is truncated or the log volume runs out of space.
      (#​7956)

    • Experimental (pre-release builds only): Fixed Logger.EmitLog ignoring
      instrumentation suppression, which could cause recursive exports or deadlocks.
      (#​7961)

    • Fixed delta double counters losing subsequent measurements after a non-finite
      or large value and idle metric points with a NaN value failing to be reclaimed.
      (#​7963)

    • Improve the assignment of values to exponential histogram buckets when the
      value is near a bucket boundary by using a pre-computed lookup table.
      (#​7911)

    • Fixed LogRecords being returned to the shared pool while still queued for
      export when an exporter stops enumerating a single-item or array
      Batch<LogRecord> early which could cause a BatchLogRecordExportProcessor
      on the same provider to export missing or incorrect data.
      (#​7965)

    • Fixed a SuppressInstrumentationScope.Enter() reference count never being
      released when the Activity it was entered for is not recorded, which caused
      all subsequent telemetry in that execution context to be suppressed.
      (#​7966)

    • Self-diagnostics log files, whether configured through OTEL_DIAGNOSTICS.json
      or SelfDiagnosticsOptions, are now always created as new files.
      (#​7968)

... (truncated)

1.20.1-rc.1

The following changes are from the previous release 1.20.0.

  • NuGet: OpenTelemetry v1.20.1-rc.1

    • Fixed a possible race condition on ARM64 when multiple threads record the
      first measurement with no tags, or the first overflow measurement, that could
      cause the measurement to be recorded incorrectly.
      (#​7951)

    • Fixed self-diagnostics preamble redaction of quoted or encoded PEM material
      and prefixed JWTs.
      (#​7955)

    • Fixed default HTTP client log filtering when registering the OTLP log exporter
      through OpenTelemetryLoggerOptions.
      (#​7959)

    • Fixed legacy self-diagnostics logging terminating the process when the log
      file is truncated or the log volume runs out of space.
      (#​7956)

    • Experimental (pre-release builds only): Fixed Logger.EmitLog ignoring
      instrumentation suppression, which could cause recursive exports or deadlocks.
      (#​7961)

    • Fixed delta double counters losing subsequent measurements after a non-finite
      or large value and idle metric points with a NaN value failing to be reclaimed.
      (#​7963)

    • Improve the assignment of values to exponential histogram buckets when the
      value is near a bucket boundary by using a pre-computed lookup table.
      (#​7911)

    • Fixed LogRecords being returned to the shared pool while still queued for
      export when an exporter stops enumerating a single-item or array
      Batch<LogRecord> early which could cause a BatchLogRecordExportProcessor
      on the same provider to export missing or incorrect data.
      (#​7965)

    • Fixed a SuppressInstrumentationScope.Enter() reference count never being
      released when the Activity it was entered for is not recorded, which caused
      all subsequent telemetry in that execution context to be suppressed.
      (#​7966)

    • Self-diagnostics log files, whether configured through OTEL_DIAGNOSTICS.json
      or SelfDiagnosticsOptions, are now always created as new files.
      (#​7968)

    • Self-diagnostics messages written to the sinks configured by
      SelfDiagnosticsOptions are now truncated to 16,384 characters so that the
      ... (truncated)

1.20.1-beta.1

The following changes are from the previous release 1.20.0-beta.1.

  • NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.20.1-beta.1

    • Fixed scrape responses being handed to the server in a single write, which
      made the server buffer a full copy of the response for each client that did
      not read it until the request completed or timed out. Responses are now
      written in bounded slices so the server's back-pressure applies.
      (#​7957)

    • Fixed startup scrapes permanently omitting target_info and configured
      resource constant labels from subsequent scrape responses.
      (#​7984)

    • Updated OpenTelemetry core component version(s) to 1.20.1.
      (#​7990)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.20.1-beta.1

    • Fixed scrape responses being handed to the server in a single write, which
      on Linux and macOS made the listener allocate and hold a full copy of the
      response for each client that did not read it until the request completed or
      timed out. Responses are now written in bounded slices.
      (#​7957)

    • Fixed scrape requests that announce a request body holding a thread pool
      thread after their response had been sent on Linux and macOS for as long as
      the client kept trickling in the body. The connection is now closed after
      responding to a request with a body instead of being kept alive.
      (#​7962)

    • Fixed startup scrapes permanently omitting target_info and configured
      resource constant labels from subsequent scrape responses.
      (#​7984)

    • Updated OpenTelemetry core component version(s) to 1.20.1.
      (#​7990)

    See CHANGELOG for details.

  • NuGet: OpenTelemetry.Shims.OpenTracing v1.20.1-beta.1

    • Updated OpenTelemetry core component version(s) to 1.20.1.
      (#​7990)

    See CHANGELOG for details.

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---
updated-dependencies:
- dependency-name: OpenTelemetry.Extensions.Hosting
  dependency-version: 1.20.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added .NET Pull requests that update .net code dependencies Pull requests that update a dependency file labels Oct 21, 2026

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Automatically approving dependabot

@sonarqubecloud

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@codecov

codecov Bot commented Oct 21, 2026 •

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 30.95%. Comparing base (1c573fd) to head (1285992).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #3381   +/-   ##
=======================================
  Coverage   30.95%   30.95%           
=======================================
  Files          41       41           
  Lines         743      743           
  Branches       21       21           
=======================================
  Hits          230      230           
  Misses        509      509           
  Partials        4        4           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

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@mergify
mergify Bot merged commit f8421f8 into main Oct 21, 2026
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@mergify

mergify Bot commented Oct 21, 2026 •

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This pull request does not currently match the merge queue conditions, so it cannot be queued from here. The box comes back if it matches again.

@dependabot
dependabot Bot deleted the dependabot/nuget/BervProject.WebApi.Boilerplate.ServiceDefaults/OpenTelemetry.Extensions.Hosting-1.20.1 branch October 21, 2026 01:15
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