title: How to parse json file in hadoop?
body: <p>I have the following JSON file in hadoop.</p>
  
  <pre><code>{
    "reviewerID": "ABC1234",
    "productID": "ABCDEF",
    "reviewText": "GOOD!",
    "rating": 5.0,
  },
  {
    "reviewerID": "ABC5678",
    "productID": "GFMKDS",
    "reviewText": "Not bad!",
    "rating": 3.0,
  }
  </code></pre>
  
  <p>The result of parse that i want is textfile.</p>
  
  <pre><code>ABC1234::ABCDEF::5.0
  ABC5678::GFMKDS::3.0
  </code></pre>
  
  <p>How to parse json file in hadoop?</p>