Hi Anton,
I'd like to see this as well. I've been working on implementing
geospatial user-defined types and functions. Having examples of
aggregations and window functions would be awesome!
I did test out implementing a distributed convex hull as a
UserDefinedAggregateFunction, and that seemed to work sensibly.
Cheers,
Jim
On 12/15/2016 03:28 AM, Anton Okolnychyi wrote:
Hi,
I am wondering whether it makes sense to expand the Spark SQL
programming guide with examples of aggregations (including
user-defined via the Aggregator API) and window functions. For
instance, there might be a separate subsection under "Getting Started"
for each functionality.
SPARK-16046 seems to be related but there is no activity for more than
4 months.
Best regards,
Anton
