title: Solr 7.x "/export" response handler not working with Streaming Expressions
body: <p>I am doing a Solr streaming expression, and I try to use the <code>/export</code> handler to fetch all of the results. Consider the following query:</p>
  
  <pre><code>search(main, q=*:*, fl="SSRN",qt="/export",sort="SSRN asc")
  </code></pre>
  
  <p>I configured my <code>schema.xml</code> for the <code>SSRN</code> field as follows:</p>
  
  <pre><code>&lt;field name="SSRN" type="int" indexed="true" stored="true" required="false" multiValued="false" docValues="true" /&gt;
  </code></pre>
  
  <p>Since the SSRN field is a docValue, it should work. The results are just the standard 10 documents. This is running in a SolrCloud environment with just one node and one shard.</p>
  
  <p>Thanks in advance! </p>