Closed johnynek closed 6 years ago
In cascading, we convert all filters and maps to flatMaps.
This means maps have to be boxed into a single iterator just to be thrown away. It is probably worth not doing this if possible.
Also, cascading understands filters separately from flatMaps. By exposing pure filters to cascading, it may make some different planning decisions.
In cascading, we convert all filters and maps to flatMaps.
This means maps have to be boxed into a single iterator just to be thrown away. It is probably worth not doing this if possible.
Also, cascading understands filters separately from flatMaps. By exposing pure filters to cascading, it may make some different planning decisions.