CodexBloom - Programming Q&A Platform

Azure Function with Durable Functions scenarios to trigger activity function intermittently

πŸ‘€ Views: 795 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-07
azure-functions durable-functions azure C#

I'm integrating two systems and I'm having issues with my Azure Durable Functions setup where an activity function sometimes does not get triggered by the orchestrator. I'm using the `Microsoft.Azure.WebJobs.Extensions.DurableTask` package version 2.5.0. The orchestrator is set up to call the activity function multiple times in a loop, but I am seeing `Function 'ActivityFunction' failed: Function execution was canceled.` errors sporadically in the Azure Portal logs. Here’s a simplified version of my orchestrator function: ```csharp [FunctionName("OrchestratorFunction")] public static async Task RunOrchestrator( [OrchestrationTrigger] IDurableOrchestrationContext context) { for (int i = 0; i < 10; i++) { var result = await context.CallActivityAsync<string>("ActivityFunction", i); // Other processing... } } ``` And my activity function looks like this: ```csharp [FunctionName("ActivityFunction")] public static string RunActivity([ActivityTrigger] int input, ILogger log) { log.LogInformation($"Processing input: {input}"); // Simulate some work Thread.Sleep(1000); return $"Processed {input}"; } ``` I have also checked the Application Insights logs, and each time the orchestrator triggers the activity function, it sometimes skips a few iterations or throws an execution canceled message. I suspect it might be related to the function timeout settings or perhaps the number of concurrent executions. I’ve tried adjusting the function timeout in the host.json file: ```json { "functionTimeout": "00:10:00" } ``` I set the `maxConcurrentActivityFunctions` to 20 as well. However, the intermittent cancellations continue. Has anyone experienced similar issues or have suggestions for debugging this question? What are best practices for handling activity function executions in Durable Functions, especially when working with loops? I'm working in a Linux environment. Is this even possible?