title: PIG - Can I convert a byteArray to a tuple
body: <p>I am processing a sequence file.  Each record in the sequence file is a protobuf.</p>
  
  <p>In PIG I'm loading the sequence file using elephantbird's SequenceFileLoader and ProtoBuf Converter.</p>
  
  <p>So, now I can see a tuple that represents the protobuf object.  Let's say:</p>
  
  <pre><code>objects: {object: {id: long, name: chararray, nested-object: bytearray}....}.
  </code></pre>
  
  <p>The nested-object is another protobuf with two properties (prop1, prop2).</p>
  
  <p>Now, can someone help me figure out how I can convert the nested-object's bytearray into another tuple (prop1, prop2) (not sure if tuple is the right term)?</p>