Which solution will meet this requirement?
Add a Retry field in the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts and the timeout error type to retry on.
Add a Timeout field in the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts.
Add a Fail state to the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts.
Update the Step Functions state machine to pass the invocation request to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe a Lambda function to the SNS topic. Configure the Lambda function with the maximum number of retry attempts for a timeout error type.
Explanations:
Adding a Retry field in the Step Functions state machine definition allows the workflow to automatically retry the Lambda function if it fails due to a timeout error. This is the recommended approach for handling transient errors and ensuring the function is retried a specified number of times.
The Timeout field in the Step Functions state machine defines how long the state can run before timing out, but it does not implement retry logic. Therefore, it won’t automatically retry on timeout errors.
A Fail state indicates that the workflow has failed and does not automatically retry the invocation. This option does not provide a mechanism for retrying the Lambda function on timeout errors.
While using an SNS topic to trigger a Lambda function can enable retries, it introduces unnecessary complexity for this use case. The requirement specifically asks for automatic retries on a timeout error, which can be directly handled by adding a Retry field in the Step Functions definition.
I gauge that the answer is:
Add a Retry field in the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts and the timeout error type to retry on.