title: Which algorithm does Apache Solr use for sorting?
body: <p>I want to use Solr to sort 10 million rows of data, then use limit to get part of them. just like this:</p>
  
  <pre><code>select * from table sort by click limit 0,10
  </code></pre>
  
  <p>Which sort algorithm does Solr use? Quick sort? Bubble sort? Or some other?</p>