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rapidsai · Nov 7, 2024 · c910df7 · c910df7
1 parent 0a23180
commit c910df7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/cpp/src/join/distinct_hash_join.cu b/cpp/src/join/distinct_hash_join.cu
@@ -179,6 +179,8 @@ distinct_hash_join<HasNested>::inner_join(rmm::cuda_stream_view stream,
     thrust::make_transform_output_iterator(found_indices->begin(), output_fn{});
 
   // TODO conditional find for nulls once `cuco::static_set::find_if` is added
+  // If `idx` is within the range `[0, probe_table_num_rows)` and `found_indices[idx]` is not equal
+  // to `JoinNoneValue`, then `idx` has a match in the hash set.
   this->_hash_table.find_async(iter, iter + probe_table_num_rows, found_begin, stream.value());
 
   auto const tuple_iter = cudf::detail::make_counting_transform_iterator(