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another review fixes

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This commit is contained in:
Nikita Taranov 2023-02-18 14:26:24 +00:00
parent f70044f34b
commit ef61c22167
2 changed files with 11 additions and 15 deletions
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22
src/Processors/QueryPlan/Optimizations/useDataParallelAggregation.cpp
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@ -89,22 +89,16 @@ bool allOutputsDependsOnlyOnAllowedNodes(
if (visited.contains(node))
return visited[node];
auto has_match_in_group_by_actions_that_is_also_irreducible = [&irreducible_nodes, &matches, &node]()
bool res = false;
/// `matches` maps partition key nodes into nodes in group by actions
if (matches.contains(node))
{
/// `matches` maps partition key nodes into nodes in group by actions
if (matches.contains(node))
{
if (const auto * node_in_gb_actions = matches.at(node).node;
/// Double-check is needed because function can be mapped into its arg (see matchTrees)
node_in_gb_actions && node_in_gb_actions->result_name == node->result_name)
{
return irreducible_nodes.contains(node_in_gb_actions);
}
}
return false;
};
const auto & match = matches.at(node);
/// Function could be mapped into its argument. In this case .monotonicity != std::nullopt (see matchTrees)
if (match.node && match.node->result_name == node->result_name && !match.monotonicity)
res = irreducible_nodes.contains(match.node);
}
bool res = has_match_in_group_by_actions_that_is_also_irreducible();
if (!res)
{
switch (node->type)

4
src/Processors/Transforms/AggregatingTransform.cpp
View File

@ -743,7 +743,9 @@ void AggregatingTransform::initGenerate()
pipe.addSimpleTransform(
[this](const Block & header)
{
return std::make_shared<SimpleSquashingChunksTransform>(header, params->params.max_block_size, 1024 * 1024);
/// Just a reasonable constant, matches default value for the setting `preferred_block_size_bytes`
static constexpr size_t oneMB = 1024 * 1024;
return std::make_shared<SimpleSquashingChunksTransform>(header, params->params.max_block_size, oneMB);
});
}
/// AggregatingTransform::expandPipeline expects single output port.