AWS Lambda does not get response after 300 seconds with nodejs aws-sdk

Question

I was using nodejs aws-sdk to invoke a long time running Lamda function. As we know AWS has increased lambda execution time to 900 seconds. But I can not get the lamda invoke response after lamda executing 300 seconds.

Here is the issue reproduce guid:

AWS Lambda code (Node.js 10.x) named error-handle:

const { promisify } = require('util')
const sleep = promisify(setTimeout)

exports.handler = async (event,context) => {
    await sleep(310000);
    return 'Success'
};

Lambda invoke index.js:

const AWS = require('aws-sdk');

const main = async() =>{
  const lambda = new AWS.Lambda({
    region:'ap-southeast-2',
    maxRetries: 0,
    httpOptions: {
      timeout: 600000,
    }
  });
  let result;
  try {
    result = await lambda.invoke({
      FunctionName: 'error-handle',
      InvocationType: 'RequestResponse',
      Payload: ""
    }).promise();
  }catch(error){
    result = error;
  }
  console.log(result);
  return result;
}
main()

After I run node index.js and wait for 310 seconds lambda execution time. I can see the lambda has been existed successfully. But I can not get response in my index.js. After 600 seconds I will get timeout error according to my timeout config.

It seems AWS lambda has not increasing the execution time from 300 to 900 seconds properly with the api endpoint.