Function HashAggregateUdfMerge

python/pyarrow/src/arrow/python/udf.cc:100–104

}

Status HashAggregateUdfMerge(KernelContext* ctx, KernelState&& src,
                             const ArrayData& group_id_mapping) {
  return checked_cast<HashUdfAggregator*>(ctx->state())
      ->Merge(ctx, std::move(src), group_id_mapping);
}

Status HashAggregateUdfFinalize(KernelContext* ctx, Datum* out) {
  return checked_cast<HashUdfAggregator*>(ctx->state())->Finalize(ctx, out);