Github user jianqiao commented on a diff in the pull request:
https://github.com/apache/incubator-quickstep/pull/179#discussion_r99897239
--- Diff: storage/AggregationOperationState.hpp ---
@@ -156,6 +152,29 @@ class AggregationOperationState {
const CatalogDatabaseLite &database);
/**
+ * @brief Get the number of partitions to be used for initializing the
+ * aggregation.
+ *
+ * @return The number of partitions to be used for initializing the
aggregation.
+ **/
+ std::size_t getNumInitializationPartitions() const;
+
+ /**
+ * @brief Get the number of partitions to be used for finalizing the
+ * aggregation.
+ *
+ * @return The number of partitions to be used for finalizing the
aggregation.
+ **/
+ std::size_t getNumFinalizationPartitions() const;
--- End diff --
The number of partitions can be different for initialization and
finalization.
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