AWS Step Functions throwing 'Timeout' errors unexpectedly in long-running tasks
I've been banging my head against this for hours. I'm stuck on something that should probably be simple... I'm working on an AWS Step Functions workflow that orchestrates multiple AWS Lambda functions, but I'm working with unexpected 'Timeout' errors in tasks that are designed to take longer than the default time limit. My state machine has several parallel tasks that can run for up to 10 minutes, but I'm getting the following behavior: `Task timed out after 300 seconds`. I've set the `TimeoutSeconds` parameter for the state that invokes my Lambda function to 600 seconds, like this: ```json { "StartAt": "LongRunningTask", "States": { "LongRunningTask": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-1:123456789012:function:myLongRunningLambda", "TimeoutSeconds": 600, "End": true } } } ``` I also checked the Lambda function's configuration and confirmed that the timeout is set to 15 minutes. However, I'm still running into this scenario. The Lambda function logs suggest that the function is indeed executing for approximately 600 seconds before it completes, but the Step Function seems to be timing out before it can retrieve the result. I've tried adding a `HeartbeatSeconds` parameter to see if it keeps the task alive while it's processing, but that doesn't seem to help. I also looked into the IAM permissions to ensure that the Step Functions service can invoke the Lambda function without issues. Everything looks fine there. Is there something I'm missing here regarding the configurations or best practices for managing longer-running tasks in AWS Step Functions? Any help would be greatly appreciated! My development environment is Ubuntu. What's the best practice here? How would you solve this?