kennknowles commented on pull request #13306:
URL: https://github.com/apache/beam/pull/13306#issuecomment-728330950
CombineFn is stable, but UDAF is not. One example is that a UDAF has to have
a SQL type. Right now this is not represented on the UDAF object but is
implied. That might
kennknowles commented on pull request #13306:
URL: https://github.com/apache/beam/pull/13306#issuecomment-726224273
Just checking: the interface for a SQL aggregation function is "can give you
a CombineFn"? I understand this is the current status of UDAFs. Is that where
we want to leave
