mrhhsg commented on code in PR #11257:
URL: https://github.com/apache/doris/pull/11257#discussion_r932965068
##########
be/src/vec/aggregate_functions/aggregate_function_uniq.h:
##########
@@ -109,18 +102,96 @@ class AggregateFunctionUniq final
detail::OneAdder<T, Data>::add(this->data(place), *columns[0],
row_num);
}
+ static ALWAYS_INLINE const KeyType* get_keys(std::vector<KeyType>&
keys_container,
+ const IColumn& column, size_t
batch_size) {
+ if constexpr (std::is_same_v<T, String>) {
+ keys_container.resize(batch_size);
+ for (size_t i = 0; i != batch_size; ++i) {
+ StringRef value = column.get_data_at(i);
+ keys_container[i] = Data::get_key(value);
+ }
+ return keys_container.data();
+ } else {
+ using ColumnType =
+ std::conditional_t<IsDecimalNumber<T>, ColumnDecimal<T>,
ColumnVector<T>>;
+ return assert_cast<const ColumnType&>(column).get_data().data();
+ }
+ }
+
+ void add_batch(size_t batch_size, AggregateDataPtr* places, size_t
place_offset,
+ const IColumn** columns, Arena* arena) const override {
+ std::vector<KeyType> keys_container;
+ const KeyType* keys = get_keys(keys_container, *columns[0],
batch_size);
+
+ std::vector<typename Data::Set*> array_of_data_set(batch_size);
+
+ for (size_t i = 0; i != batch_size; ++i) {
+ array_of_data_set[i] = &(this->data(places[i] + place_offset).set);
+ }
+
+ for (size_t i = 0; i != batch_size; ++i) {
+ if (i + HASH_MAP_PREFETCH_DIST < batch_size) {
+ array_of_data_set[i + HASH_MAP_PREFETCH_DIST]->prefetch(
+ keys[i + HASH_MAP_PREFETCH_DIST]);
+ }
+
+ array_of_data_set[i]->insert(keys[i]);
+ }
+ }
+
void merge(AggregateDataPtr __restrict place, ConstAggregateDataPtr rhs,
Arena*) const override {
- this->data(place).set.merge(this->data(rhs).set);
+ auto& rhs_set = this->data(rhs).set;
+ if (rhs_set.size() == 0) return;
+
+ auto& set = this->data(place).set;
+ set.rehash(set.size() + rhs_set.size());
+
+ for (auto elem : rhs_set) {
+ set.insert(elem);
Review Comment:
Yes, `phmap::merge` inserts elements one by one and it requires the src(rhs)
is not constant.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org
For additional commands, e-mail: commits-h...@doris.apache.org
