yiguolei commented on code in PR #18051:
URL: https://github.com/apache/doris/pull/18051#discussion_r1156692510
##########
be/src/vec/exec/vaggregation_node.cpp:
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@@ -1127,6 +1204,205 @@ Status
AggregationNode::_pre_agg_with_serialized_key(doris::vectorized::Block* i
return Status::OK();
}
+struct PartitionHelper {
+ static constexpr size_t PartitionCountBits = 4;
Review Comment:
set it to session variable, because if the query is very large, 16 sub
hashtables will also consume a lot of memory. Maybe spill it to 256 sub hash
tables for some query.
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