title: Dump a string or a (string, integer) tuple in pig
body: <p>I have a simple pig script, I was able to read the data and dump the data. However, I failed to dump a string or a (string, int) tuple. Just wondering what am I missing here? Thanks a lot!</p>
  
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  <pre><code>dataset = LOAD '/Users/me/input' USING PigStorage() AS (id:chararray,data:chararray);
  
  dataset_GROUP = GROUP dataset ALL;
  dataset_COUNT = FOREACH dataset_GROUP GENERATE COUNT(dataset);
  
  DUMP "record_count = ";                 &lt;-- this does not work
  DUMP dataset_COUNT;                     &lt;-- this works 
  DUMP "record_count = ", dataset_COUNT;  &lt;-- this does not work
  </code></pre>