Affects Version/s: None
Fix Version/s: 0.18.0
This is something I thought would be cool for a while, so I sat down and did it because I think there are some useful debugging tools it'd help with.
The idea is that if you attach an annotation to a UDF, the Tuple or DataBag you output will be flattened. This is quite powerful. A very common pattern is:
a = foreach data generate Flatten(MyUdf(thing)) as (a,b,c);
This would let you just do:
a = foreach data generate MyUdf(thing);
With the exact same result!