implementing AWS Step Functions Not Transitioning States as Expected with AWS SDK for JavaScript
I'm wondering if anyone has experience with I've looked through the documentation and I'm still confused about I am using AWS Step Functions to manage a workflow that orchestrates multiple AWS Lambda functions. My state machine is defined with a series of tasks that depend on the output of the previous one. However, I am experiencing unexpected behavior where the state transitions are failing intermittently. The behavior I receive in the AWS console is 'States.TaskFailed' along with a message indicating that the Lambda function did not return the expected response. Here's a simplified version of my Step Functions definition: ```json { "Comment": "A Hello World example of the Amazon States Language using a Pass state", "StartAt": "FirstFunction", "States": { "FirstFunction": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-1:123456789012:function:FirstFunction", "Next": "SecondFunction" }, "SecondFunction": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-1:123456789012:function:SecondFunction", "End": true } } } ``` In my FirstFunction Lambda, I return the output like this: ```javascript exports.handler = async (event) => { // Simulating some processing logic const result = { status: 'success', data: 'Processing done' }; return result; }; ``` I have verified that the Lambda function is deployed correctly, and I am invoking it with the correct permissions. However, I'm seeing that sometimes it doesn’t return the result in the expected format, which leads to the state machine failing. I've added logging in Lambda and confirmed that it executes without errors. I have tried increasing the timeout for the Step Function’s state transitions and reviewing the IAM roles attached to both the Step Functions and Lambda. Additionally, I checked the payload size limits and ensured that the responses are always under the 256 KB limit, yet the question continues. Any insights on why the state machine might not transition smoothly or how I can debug this scenario further would be greatly appreciated. What's the best practice here? I'm working on a desktop app that needs to handle this. Cheers for any assistance!