title: how to add columns to existing hive partitioned table?
body: <pre><code>alter table abc add columns (stats1 map&lt;string,string&gt;, stats2 map&lt;string,string&gt;)
  </code></pre>
  
  <p>i have altered my table with above query. But after while checking the data i got NULL's for the both extra columns. I'm not getting data.</p>
  
  <p><a href="https://i.stack.imgur.com/Q0uAs.jpg" rel="nofollow noreferrer">screenshot</a></p>