title: Elasticsearch query returns 10 when expecting > 10,000
body: <p>I want to retrieve all the JSON objects in <code>Elasticsearch</code> that have a <code>null</code> value for <code>awsKafkaTimestamp</code>. This is the query I have set up:</p>
  
  <pre><code>{
    "query": {
      "bool": {
        "must_not": {
          "exists": {
            "field": "tracer.awsKafkaTimestamp"
          }
        }
      }
    }
  }
  </code></pre>
  
  <p>When I curl to my elasticsearch endpoint with the <code>DSL</code> I only get a few values back. I am expecting all (10000+) of them because I know for sure all the <code>awsKafkaTimestamp</code> values are <code>null</code></p>
  
  <p>This is the response I get when I use <code>Postman</code>. As you can see, there are only 10 JSON objects returned to me:</p>
  
  <p><a href="https://i.stack.imgur.com/NzClt.png" rel="nofollow"><img src="https://i.stack.imgur.com/NzClt.png" alt="enter image description here"></a></p>