I was just working on a pig script to group some data by a field and then generate percentages for each group. Without windowing functions at my disposal, I wound up using a group by on the field for the numerator, a group all for the denominator, and a cross to pull them together.
Afterward, I found myself wanting to drop that snippet somewhere that other folks could use it, or (even better) to have found a snippet in the first place and not had to write it!
So I was thinking it'd be great to have a "pig cookbook" online with common operations that people do with pig. Does anything like that exist yet? If not, where would be a good place for it?