Never mind. GenericUDAFCollectList supports struct in 1.3.0. I modified it and it works in a tricky way.
I also found an example HiveWindowFunction. On Thu, Jan 28, 2016 at 12:49 PM, Benyi Wang <bewang.t...@gmail.com> wrote: > I'm trying to implement a WindowFunction like collect_list, but I have to > collect a struct. collect_list works only for primitive type. > > I think I might modify GenericUDAFCollectList, but haven't tried it yet. > > I'm wondering if there is an example showing how to write a custom > WindowFunction in Spark-sql > > Thanks. > > >
