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STORE with variable?
Is there a way to use STORE with variable or some other way to achieve what
I need.

I have something like this:

grunt> DESCRIBE A;
A: {f1, f2, f3, ...}

grunt> DUMP A;
(v1, x2, x3, ...)
(v2, x4, x5, ...)
(v1, x6, x6, ...)

I do so processing and then group by f1 and would like to save the result in
different directories for different f1, like this:


I know I could use SPLIT, but I have 100+ unique values for f1, and number
of uniques varies each time I process. It will be nice I don't have list 100
BY lines with SPLIT and I certainly do not want to maintain the list of
possible values for f1 in my Pig script.