title: How to sort the data on multiple columns in apache spark scala?
body: <p>I have data set like this which I am taking from csv file and converting it into RDD using scala.</p>
  
  <pre><code>+-----------+-----------+----------+
  | recent    | Freq      | Monitor  |
  +-----------+-----------+----------+
  |        1  |       1234 |   199090|
  |        4  |       2553|    198613|
  |        6  |       3232 |   199090|
  |        1  |       8823 |   498831|
  |        7  |       2902 |   890000|
  |        8  |       7991 |   081097|
  |        9  |       7391 |   432370|
  |        12 |       6138 |   864981|
  |        7  |       6812 |   749821|
  +-----------+-----------+----------+
  </code></pre>
  
  <p>How to sort the data on all columns ?</p>
  
  <p>Thanks</p>