title: Can I output a collection instead of a tuple in Scalding map method?
body: <p>If you want to create a pipe with more than 22 fields from a smaller one in Scalding you are limited by Scala tuples, which cannot have more than 22 items.</p>
  
  <p>Is there a way to use collections instead of tuples? I imagine something like in the following example, which sadly doesn't work:</p>
  
  <pre><code>input.read.mapTo('line -&gt; aLotOfFields) { line: String =&gt;
    (1 to 24).map(_.toString)
  }.write(output)
  </code></pre>