Excuse me I could have missed important part of PIG document and asked this trivial question here :) What is the best way to find out the total number of tuples (rows) in the bag of data loaded? For example, after "a = LOAD 'sth' AS (key, value); b = GROUP a BY key; c = FOREACH b GENERATE key;" I want to know how many tuples are loaded to 'a' and total number left in 'c'. One way might be to use a udf function. But is there a support of counting this in PIG?
Thanks,
Michael
