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Fix cardinalities usage

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This commit is contained in:
Igor Markelov 2024-05-27 19:28:14 +00:00
parent 335a0844f5
commit 125bb145d8
1 changed files with 12 additions and 3 deletions
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15
src/Storages/MergeTree/RowOrderOptimizer.cpp
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@ -110,7 +110,8 @@ std::vector<size_t> getCardinalitiesInPermutedRange(
std::vector<size_t> cardinalities(other_column_indexes.size());
for (size_t i = 0; i < other_column_indexes.size(); ++i)
{
const ColumnPtr & column = block.getByPosition(i).column;
const size_t column_id = other_column_indexes[i];
const ColumnPtr & column = block.getByPosition(column_id).column;
cardinalities[i] = column->estimateCardinalityInPermutedRange(permutation, equal_range);
}
return cardinalities;
@ -123,19 +124,27 @@ void updatePermutationInEqualRange(
const EqualRange & equal_range,
const std::vector<size_t> & cardinalities)
{
LoggerPtr log = getLogger("RowOrderOptimizer");
LOG_TRACE(log, "Starting optimization in equal range");
std::vector<size_t> column_order(other_column_indexes.size());
iota(column_order.begin(), column_order.end(), 0);
auto cmp = [&](size_t lhs, size_t rhs) -> bool { return cardinalities[lhs] < cardinalities[rhs]; };
::sort(column_order.begin(), column_order.end(), cmp);
stable_sort(column_order.begin(), column_order.end(), cmp);
std::vector<EqualRange> ranges = {equal_range};
LOG_TRACE(log, "equal_range: .from: {}, .to: {}", equal_range.from, equal_range.to);
for (size_t i : column_order)
{
const size_t column_id = other_column_indexes[i];
const ColumnPtr & column = block.getByPosition(column_id).column;
LOG_TRACE(log, "i: {}, column_id: {}, column->getName(): {}, cardinality: {}", i, column_id, column->getName(), cardinalities[i]);
column->updatePermutation(
IColumn::PermutationSortDirection::Ascending, IColumn::PermutationSortStability::Unstable, 0, 1, permutation, ranges);
IColumn::PermutationSortDirection::Ascending, IColumn::PermutationSortStability::Stable, 0, 1, permutation, ranges);
}
LOG_TRACE(log, "Finish optimization in equal range");
}
}