Lambda function access by RDS trigger creates connection lost - amazon-web-services

Question

I created 2 tables in RDS aurora:
test-table in aurora db with values id(PK), tasknumber, status , contactid(FK)
contact-table in same db with values contactid(PK), email, phone
I created a trigger in 'test-table' that whenever a 'status' changes, the trigger should call AWS-Lambda ARN.
The Lambda function and Aurora has all the permissions, and security cleared, still on testing from Lambda I get below image error and on updating the 'status' field manually in aurora(via Workbench Sql query) it shows:
Operation failed: There was an error while applying the SQL script to the database.
ERROR 2013: 2013: Lost connection to MySQL server during query
I have attached my Lambda Node.Js code too.
var AWS = require('aws-sdk');
AWS.config.update({ region: 'us-east-1' });
const mysql = require('mysql');
var con = mysql.createConnection({
host: 'correct value',
user: 'root',
password: 'correct value',
port: correct value,
database: 'correct value'
});
exports.handler = (event, context, callback) => {
context.callbackWaitsForEmptyEventLoop = false;
var fk = event.contact_id;
console.log('FOREIGN KEY=', fk)
con.connect(function(err) {
if (err) throw err;
var sql = `SELECT * FROM db.contacts where contact_id=${fk}`
con.query(sql, function(err, result) {
if (err) throw err;
var email = result[0].email;
console.log(email);
var sns = new AWS.SNS();
var params = {
Message: email,
Subject: "Test SNS From Lambda",
TopicArn: "arn:correct value"
};
sns.publish(params, function(err, data) {
if (err) console.log(err, err.stack);
else {
console.log(data);
callback(null, 'Success');
}
});
});
});
};
Image1ErrorMySqlWorkbench
Image2ErrorLambdaaws
Also followed for NodeJs package: https://github.com/isaacs

Answer 1

you have to close the connection if you want the instant response otherwise it will take the default time to close the connection, please let me know if makes sense