AWS JavaScript SDK to launch an EMR Cluster with EMRFS Consistent View enabled.

AWSjsSDKemr

var express = require('express');
var router = express.Router();

var AWS = require('aws-sdk');
AWS.config.update({region: 'ap-south-1'});

router.get('/', function(req, res, next) {
  res.render('index', { title: 'Express' });
});

router.post('/perform', function (req, res, next) {
  var emr = new AWS.EMR();

    var params = {
        Instances: {
            Ec2KeyName: 'training-key',
            Ec2SubnetId: 'subnet-xxxxxxxx',
            EmrManagedMasterSecurityGroup: 'sg-xxxxxxxxxxxxxxxxx',
            EmrManagedSlaveSecurityGroup: 'sg-xxxxxxxxxxxxxxxxx',
            HadoopVersion: '2.8.3',
            TerminationProtected: false,
            InstanceGroups: [{
                Name: "Master Instance Group",
                InstanceRole: "MASTER",
                InstanceCount: 1,
                InstanceType: "m4.large",
                Market: "ON_DEMAND"
            }]
        },
        Name: 'Testing-cluster',
        Applications: [
            {
                Name: 'Ganglia',
            },
            {
                Name: 'Spark',
            },
        ],
        Configurations: [
            {
                Classification: 'emrfs-site',
                Properties: {
                    'fs.s3.consistent.retryPeriodSeconds': '10',
                    'fs.s3.consistent.retryCount': '5',
                    'fs.s3.consistent': 'true',
                    'fs.s3.consistent.metadata.tableName': 'EmrFSMetadata'
                }
            },
        ],
        JobFlowRole: 'EMR_EC2_DefaultRole',

        LogUri: 's3://aws-logs-xxxxxxxxxxxx-ap-south-1/elasticmapreduce/',
        ReleaseLabel: 'emr-5.15.0',
        ServiceRole: 'EMR_DefaultRole',

    };
    emr.runJobFlow(params, function(err, data) {
        if (err) console.log(err, err.stack);
        else     console.log(data);
    });
});

module.exports = router;