open-telemetry/opentelemetry-dotnet core-1.6.0-rc.1

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OpenTelemetry

• Experimental Feature Added an opt-in feature to aggregate any metric
  measurements that were dropped due to reaching the max MetricPoints
  limit.
  When this feature is enabled, SDK would aggregate such measurements using a
  reserved MetricPoint with a single tag with key as otel.metric.overflow and
  value as true. The feature is turned-off by default. You can enable it by
  setting the environment variable
  OTEL_DOTNET_EXPERIMENTAL_METRICS_EMIT_OVERFLOW_ATTRIBUTE to true before
  setting up the MeterProvider.
  (#4737)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Excluded attributes corresponding to LogRecord.EventId,
  LogRecord.CategoryName and LogRecord.Exception from the exported data. This
  is done as the semantic conventions for these attributes are not yet stable.
  (#4781)

• Added extension method for configuring export processor options for otlp log
  exporter.
  (#4733)

• Added support for configuring the metric exporter's temporality using the
  environment variable OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE as
  defined in the
  specification.
  (#4667)

OpenTelemetry.Exporter.Prometheus.AspNetCore

• Added support for unit and name conversion following the OpenTelemetry Specification
  (#4753)

OpenTelemetry.Exporter.Prometheus.HttpListener

• Added support for unit and name conversion following the OpenTelemetry Specification
  (#4753)

OpenTelemetry.Extensions.Hosting

• Experimental (pre-release builds only): Added Logs Bridge
  API
  implementation (OpenTelemetryBuilder.WithLogging).
  (#4735)