AWS lambda running for continuously for timeout duration

Question

Hello,

I have developed an AWS Lambda function to process SQS items, and I am currently using a batch size of 1. According to my estimates, processing a single SQS item should take about 10 seconds. However, after deploying the Lambda function, I noticed that the processing time for a batch of SQS items still takes only 10 seconds, but the billing duration metric reports a duration of 500 seconds.

I have thoroughly reviewed the code and tested it locally, and have not encountered any exceptions.

Would someone be able to assist me in resolving this issue?

Answer

Try to add logging to your function, or use X-Ray, to understand where the time is spent. If you put a timeout of 10 sec, and your function takes effectively 500 sec to run, it will constantly fail.

Answer

Without seeing the code it's difficult to troubleshoot from here. That said, if the processing duration should only be 10 seconds, why not set the timeout to 10 seconds?

If you need to find out why the Lambda function is running longer than 10 seconds, I'd suggest that you contact the support team as they have visibility into your environment and your Lambda functions.

AWS lambda running for continuously for timeout duration

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