sajithdilshan

public static void main(String[] args) throws Exception {
    Configuration conf = new Configuration();
    conf.set("fs.defaultFS", "hdfs://localhost:9000");
    Job job = Job.getInstance(conf, "word count");
    job.setJarByClass(VisitorPathCount.class);
    job.setMapperClass(TokenizerMapper.class);
    job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(IntWritable.class);

sajithdilshan

public static class IntSumReducer extends Reducer<Text, IntWritable, Text, IntWritable> {
    private IntWritable result = new IntWritable();

    public void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {
        int sum = 0;
        for (IntWritable val : values) {
            sum += val.get();
        }
        result.set(sum);
        context.write(key, result);

sajithdilshan

public static class TokenizerMapper extends Mapper<Object, Text, Text, IntWritable> {
    private static final Pattern pattern = Pattern.compile("\"([^\"]*)\"");
    private final static IntWritable one = new IntWritable(1);
    private Text word = new Text();

    public void map(Object key, Text value, Context context) throws IOException, InterruptedException {
        Matcher matcher = pattern.matcher(value.toString());
        if (matcher.find()) {
            word.set(matcher.group(0));
            context.write(word, one);

sajithdilshan

import React, { Component } from 'react';
import Alice from './Alice';

class App extends Component {

  constructor() {
    super();
    this.state = {
      greeting: "Hello World!",
      parentMessage: "Hello Alice!"

sajithdilshan

import React, { Component } from 'react';

class Alice extends Component {

  constructor(props) {
    super(props)
    this.state = {
      greeting: props.newMsg
    }
  }

sajithdilshan

import React, { Component } from 'react';
import Alice from './Alice';

class App extends Component {

  constructor() {
    super();
    this.state = {
      greeting: "Hello World!",
      parentMessage: "Hello Alice!"

sajithdilshan

import React, { Component } from 'react';
import Alice from './Alice';

class App extends Component {

  constructor() {
    super();
    this.state = {
      greeting: "Hello World!"
    }

sajithdilshan

import React, { Component } from 'react';
import Alice from './Alice';

class App extends Component {
  render() {
    return (
      <div className="greeting">
        <h1> Hello World! </h1>
        <Alice/>
      </div>

sajithdilshan

import React, { Component } from 'react';

class Alice extends Component {
  render() {
    return (
      <div>
        <h2> Hi, I am Alice </h2>
      </div>
    );
  }

sajithdilshan

const element = React.createElement(
    'h1',
    {className: 'greeting'},
    'Hello, world!'
);