title: converting hive array columns into map column
body: <p>I have a hive table with two array columns as follows:</p>
  
  <pre><code> col1        col2
  a,b,c        1,2,3
  </code></pre>
  
  <p>I want to convert these two columns into map column as follows:</p>
  
  <pre><code>    col
    {a-&gt;1,b-&gt;2,c-&gt;3}
  </code></pre>
  
  <p>How it can be done?</p>