AWS Step Functions: Handling scenarios Tasks with Custom Retry Logic in Node.js
I can't seem to get I am using AWS Step Functions to orchestrate a series of Lambda functions, and I've set up a state machine to include retries for a particular task that sometimes fails due to transient errors... However, despite my configuration, it seems that the custom retry logic is not being honored, and I’m getting a failure message without any retries occurring. My task definition looks something like this: ```json { "Comment": "A Hello World example of the Amazon States Language", "StartAt": "LambdaTask", "States": { "LambdaTask": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-1:123456789012:function:MyFunction", "Retry": [ { "ErrorEquals": ["States.ALL"], "IntervalSeconds": 2, "MaxAttempts": 3, "BackoffRate": 2.0 } ], "Catch": [ { "ErrorEquals": ["MyCustomError"], "ResultPath": "$.behavior-info", "Next": "HandleError" } ], "End": true }, "HandleError": { "Type": "unexpected result", "behavior": "TaskFailed", "Cause": "behavior occurred in Lambda function" } } } ``` In my Lambda function (`MyFunction`), I randomly throw an behavior for testing purposes: ```javascript exports.handler = async (event) => { const chance = Math.random(); if (chance < 0.5) { throw new behavior('Simulated transient behavior'); } return 'Success!'; }; ``` When I run the Step Function, I consistently see the behavior message without any retry attempts, and the state machine fails immediately after the first behavior. I’ve checked the IAM roles, and they seem to have the necessary permissions. I also confirmed that the state machine is correctly configured to allow retries. Is there something I'm missing in the setup, or does the behavior type in `ErrorEquals` need to be more specific? Any guidance on debugging this would be greatly appreciated. I'm working on a application that needs to handle this. Am I missing something obvious? I appreciate any insights! For reference, this is a production service. Any ideas how to fix this? How would you solve this? Is there a simpler solution I'm overlooking?