Azure Function Timeout implementing Durable Functions on Large Payloads
I'm sure I'm missing something obvious here, but I'm working with a frustrating scenario where my Azure Durable Function times out when processing large payloads... I'm using C# with the Azure Functions V3 runtime and the `DurableOrchestrationContext` to manage workflow. The orchestration function is designed to handle a large JSON object, approximately 5MB in size, but during execution, I'm getting a timeout exception. The behavior message states: `Function 'MyOrchestratorFunction' failed: The function execution was aborted due to a timeout.` To troubleshoot, I've tried increasing the timeout duration in my host.json configuration as shown below: ```json { "functionTimeout": "00:10:00" } ``` However, the function still times out after 5 minutes, which is the default limit for Azure Functions. I've also attempted breaking down the payload into smaller chunks and processing them in parallel tasks using `Task.WhenAll()`, but the orchestration still seems to hit the timeout limit. I've confirmed that the function plan is set to Premium, which supposedly supports longer execution times, but I haven't seen any improvement. Here’s a snippet of my orchestration function: ```csharp [FunctionName("MyOrchestratorFunction")] public static async Task RunOrchestrator([OrchestrationTrigger] IDurableOrchestrationContext context) { var payload = context.GetInput<MyLargePayload>(); var results = await context.CallActivityAsync<List<Result>>("ProcessLargePayload", payload); } ``` I also have an activity function that processes the actual payload: ```csharp [FunctionName("ProcessLargePayload")] public static async Task<List<Result>> ProcessLargePayload([ActivityTrigger] MyLargePayload payload, ILogger log) { // Processing logic here } ``` What could be causing this timeout scenario, and how can I effectively handle large payloads without running into these limitations? I'm working on a API that needs to handle this. This is part of a larger desktop app I'm building. I appreciate any insights! This issue appeared after updating to C# stable. Is this even possible?