Azure / Azure/azure-functions-host
Application Insights is filled with EventProcessor.Process logs that cannot be filtered out when OpenTelemetry enabled
- Dominant language
- C#
- Stars
- 2k
- Forks
- 482
- Avg merge
- 2d 10h
- Merged PRs (30d)
- 36
Description
#### Investigative information
Please provide the following:
- Timestamp: 2026-05-12T20:44:34.9646501Z
- Function App version: azurefunctions:4.1048.0.0_dotnet8.0.25:otel1.14.0:ext1.5.0
- Invocation ID: aa87f17652e62745
- Region: Canada Central
#### Repro steps
Provide the steps required to reproduce the problem:
1. enable OpenTelemetry in Azure Functions using Application Insights:
```csharp
services.AddOpenTelemetry()
.UseFunctionsWorkerDefaults()
.UseAzureMonitorExporter();
```
2. modify host.json to set telemetryMode
```json
"version": "2.0",
"telemetryMode": "OpenTelemetry"
```
3. use EventHubTrigger
4. Check application insights logs
5. Requests table is filled with EventProcessor.Process operations that cannot be disabled
#### Expected behavior
There should be a setting to turns this messages off.
#### Actual behavior
I tried multiple options but all options keep producing telemetry.
options tried:
1.
```json
"logging": {
"logLevel": {
"default": "Warning"
},
"OpenTelemetry": {
"logLevel": {
"default": "Warning"
}
}
}
```
2. set AZURE_TRACING_DISABLED = true
#### Known workarounds
I was unable to find any workarounds
#### Related information
Seems related to https://github.com/microsoft/aspire/issues/10225
* Programming language used: c#
* Bindings used: EventHubTrigger
Contributor guide
Assessment
This issue has not been assessed yet.