Many logs from OtlpMetricExporter. Exporting telemetry shouldn't generate new telemetry unless there is an error.

Package

OpenTelemetry.Exporter.OpenTelemetryProtocol

Package Version

Package Name	Version
OpenTelemetry.Api	1.8.0
OpenTelemetry	1.8.0
TBD	TBD

Runtime Version

net8.0

Description

I have configured OtlpMetricExporter to frequently export logs/metrics/traces. The console output of my app is overwhelmed by messages about sending logs:

2024-06-25T09:44:20.1475445 info: System.Net.Http.HttpClient.OtlpMetricExporter.LogicalHandler[100]
      Start processing HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:20.1489914 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[100]
      Sending HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:20.1538312 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[101]
      Received HTTP response headers after 3.5605ms - 200
2024-06-25T09:44:20.1561990 info: System.Net.Http.HttpClient.OtlpMetricExporter.LogicalHandler[101]
      End processing HTTP request after 8.6638ms - 200
2024-06-25T09:44:21.1417709 info: System.Net.Http.HttpClient.OtlpMetricExporter.LogicalHandler[100]
      Start processing HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:21.1433057 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[100]
      Sending HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:21.1489110 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[101]
      Received HTTP response headers after 4.3301ms - 200
2024-06-25T09:44:21.1508084 info: System.Net.Http.HttpClient.OtlpMetricExporter.LogicalHandler[101]
      End processing HTTP request after 9.0477ms - 200
2024-06-25T09:44:22.1385920 info: System.Net.Http.HttpClient.OtlpMetricExporter.LogicalHandler[100]
      Start processing HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:22.1406961 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[100]
      Sending HTTP request POST https://localhost:16038/v1/metrics
2024-06-25T09:44:22.1471257 info: System.Net.Http.HttpClient.OtlpMetricExporter.ClientHandler[101]
      Received HTTP response headers after 4.6983ms - 200

The problem is the metrics (and tracing) exporters are configured to create the HttpClient from Microsoft.Extensions.Http, and it adds logging that outputs these messages. Every export writes 4 messages (8 lines) to console logs.

HttpClient logging should be disabled for these clients.

Steps to Reproduce

Configure OTLP export using OTLP/gRPC. Set export interval to a low number.

Expected Result

Clean console output.

Actual Result

Unhelpful log messages everywhere.

Additional Context

No response