title: Elastic search query after update returning old non updated document
body: <p>I am updating a document in my index where I am changing its status from 0 to 1. When I do an update and again query for any document having status 0, it again returns the same document, so I end up doing the same thing again. This operation gets repeated twice or thrice randomly. There seems to be some lag on part of elastic search client because if I do the same operation with a settimeout, it doesn't repeat. This problem gets magnified when I update a say 5000 documents, which runs around 5500 times on an average.</p>
  
  <pre><code>function getData(){
      client.search({
          index: 'es_dummy',
          type: 'log',
          size: 1,
          body: {
              "query" : {
                  "match" : {
                      "status" : "0"
                  }
              }
          }
      },
      function(err, resp){
          console.log(resp.hits.hits.length);
          if(resp.hits.hits.length)
              updateIndexData(resp.hits.hits, 0, resp.hits.hits.length);
          else
              console.log("done");
      });
  }
  getData();
  function updateIndexData(resp, index, length){
      client.update({
          index: 'es_dummy',
          type: 'log',
          id: resp[index]._id,
          script: 'ctx._source.status = 1'
      },
      function(err1, resp1){
          if(!err1 &amp;&amp; resp1){
              console.log("updated" + " " + update);
              var milliseconds = (new Date).getTime();
              console.log("time " + milliseconds);
              update++;
              getData();
          }
          else
              console.log(err1);
      })
  
  }
  </code></pre>