How do I extract the first tuple from a generated bag (whose size might vary) in PIG?

Question

I am generating a \'bag\' of information whose size (number of tuples inside the the bag) might vary. From this, I want to extract the first element on the fly. How do I do

Answer 1

Use DataFu UDF: FirstTupleFromBag (http://datafu.incubator.apache.org/docs/datafu/1.2.0/datafu/pig/bags/FirstTupleFromBag.html)