Closed
Description
The implementation of semi-anti-join was refactored in #11100. One of the changes was to use cuco::static_multimap
, which was later discovered that it has performance issue when the input tables have too many duplicate rows (#11299).
We should use cuco::static_map
to avoid the performance issue. However, this is not just a simple change in implementation but needs a new FEA from cuco which adds pair_contains
into static_map
: NVIDIA/cuCollections#191.
Activity