title: replace comma(,) only if its inside quotes("") in Pig
body: <p>I have data like this:</p>
  
  <pre><code>1,234,"john, lee", john@xyz.com
  </code></pre>
  
  <p>I want to remove , inside "" with space using pig script. So that my data will look like:</p>
  
  <pre><code>1,234,john lee, john@xyz.com
  </code></pre>
  
  <p>I tried using CSVExcelStorage to load this data but i need to use '-tagFile' option as well which is not supported in CSVExcelStorage . So i am planning to use PigStorage only and then replace any comma (,) inside quotes.
  I am stuck on this. Any help is highly appreciated. Thanks</p>