title: Why split('TEST','') returns two extra elements:- ["","T","E","S","T",""]
body: <p>Why is the Hive split function returning two extra elements? My input string only has 4 characters but split returns an array with 6 elements.</p>
  
  <pre><code>hive&gt; select split('TEST','');
  OK
  ["","T","E","S","T",""]
  </code></pre>
  
  <p>My goal was to convert the input string to character array.</p>