title: ElasticSearch aggs returns 10 buckets only
body: <p>I am running an aggs query and specifying the size of 100, but ES only returns 10 buckets back. Why? What am I missing?</p>
  
  <pre><code>{   
    "size": 100
     ,"query": {
        "bool": {
          "must": [
            { "term": {"app": "cnn"} }
          ]
        }
      }
     ,"aggs": {
      "unique_client": {
        "terms": {"field": "client"}    
        }     
      }
  }
  </code></pre>