title: Can we split a file column by :: delimiter in pig
body: <p>I am trying to read a file which have delimiter as double colon (::). I am using <code>CSVExcelStorage</code>, but it is giving error as:</p>
  
  <blockquote>
    <p>could not instantiate 'org.apache.pig.piggybank.storage.CSVExcelStorage' with arguments '[::]'</p>
  </blockquote>
  
  <p>So is there any way to read a file using custom delimiter?</p>