TimeOutException in HttpTrigger Function when DD_TRACE_ENABLED set to true

[ansonpinhero]

I'm encountering a TimeoutException for an HttpTrigger function while running the Function App with Datadog instrumentation in a docker container. Notably, these errors did not occur when the config - DD_TRACE_ENABLED set to false.

I've created a github issue in azure-functions-dotnet-worker project. Please refer to this issue - Azure/azure-functions-dotnet-worker#2910

[kenthellck]

We noticed similar behavior in our application, as mentioned by @ansonpinhero. This issue is occurring in .NET 8 isolated and has resulted in numerous timeouts, causing our application to fail. When we disable Datadog, it works perfectly.
We urgently need a resolution from Datadog, as this issue is preventing us from delivering our applications to production. As a workaround, we are now attempting to implement Azure Application Insights, which functions correctly. And thinking to move away from DataDog.
Datadog needs to improve its APM capabilities to address such issues effectively.

[ashan1992]

Likewise, we are encountering a similar issue with .NET 8 Azure Functions. and there is a huge performance degrade when we enable DD_TRACE. Has there been any update from the Datadog team regarding this?

[bouwkast]

We are actively looking into this at the moment.

We will follow back as we get more information.

[bouwkast]

As an update, we've been able to reproduce the performance issue and will continue to look into the cause and provide a remediation for it.

We don't see the issue if the .NET project uses .ConfigureFunctionsWorkerDefaults() instead of .ConfigureFunctionsWebApplication(), so it may be an issue with our ASP.NET Core integration - however, disabling that integration doesn't appear to address the issue.

We're continuing to investigate this and will follow up again.

[ansonpinhero]

Thank you for the update @bouwkast