[bug] No Export since v1.11 on net9-android

[stratdev3]

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Package

OpenTelemetry

Package Version

Package Name	Version
OpenTelemetry.Exporter.OpenTelemetryProtocol	1.11.0

Runtime Version

net9-android

Description

Hi,

I have a regression with the OpenTelemetry.Exporter.OpenTelemetryProtocol version >= 1.11.0 which occur on the net9-android runtime. The previous version v1.10.0 is working.

Data are no longer exported to the destination.

Steps to Reproduce

MeterProvider meterProvider = 
                 Sdk.CreateMeterProviderBuilder()
                    .AddMeter("*")
                    .SetResourceBuilder(
                        ResourceBuilder
                              .CreateEmpty()
                              .AddService("screenshootservice", "0.1")
                    )
                    .AddOtlpExporter((exporterOptions, metricReaderOptions) => {
                        exporterOptions.Endpoint = new Uri("http://localhost:4317");
                        metricReaderOptions.TemporalityPreference = MetricReaderTemporalityPreference.Delta;
                        metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 10_000;
                    })
                    .AddConsoleExporter((consoleExporterOptions, metricReaderOptions) => {
                        metricReaderOptions.PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds = 10_000;
                    })
                    .Build();

Meter meter = new("screenshootservice", "0.1);

List<KeyValuePair<string, object>> tags = new() {
    new KeyValuePair<string, object>("host", "example"),
};
ObservableGauge<int> counterFps = meter.CreateObservableGauge("screenshootservice.fps",
                                                              () => new Measurement<int>(30, tags),
                                                              "fps",
                                                              "screenshootservice fps");

Expected Result

The metrics should be exporter to the endpoint (a local instance of the opentelemetry-collector-contrib in debug verbose mode)

Actual Result

The metrics are not exported to the endpoint (a local instance of the opentelemetry-collector-contrib in debug verbose mode)

Additional Context

I add AddConsoleExporter() so i confirm the metrics are displayed in the console. They are just not exported to endpoint.

• When i use net9, metrics are exported to endpoint.
• When i use the v1.10, metrics are exported to endpoint.

The issue seems to be related with v1.11 and net9-android.

Thanks

[TimothyMothra]

Can you please collect the self diagnostic logs and share? That would help us understand if an error is happening at runtime. https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/src/OpenTelemetry/README.md#self-diagnostics

[Kielek]

Closing as there is no feedback from the reporter.

[stratdev3]

same here : https://github.com/open-telemetry/opentelemetry-dotnet/issues/6296

In fact, the v1.12.0 contains too many regression, only the v1.10.0 is working properly. Why there is no warning about this and how the v1.12 is still in production ?

[martincostello]

In fact, the v1.12.0 contains too many regression

What are the specific regressions?

---

The other referenced gRPC issue has been fixed (just not released yet), and this issue looks like it might be a duplicate of that one. More information, as requested, is needed if it isn't to be able to investigate further.

Until the change is released, you could validate whether your issue is fixed by using a build from main by consuming the NuGet packages attached to the GitHub Actions workflow run.

[martincostello]

Closing as a likely duplicate of #6296, which was fixed in v1.13.0.

If there are other issues preventing you from using the library in .NET 9 on Android, then please open an issue with further details about the problems.