ClickHouse/dbms/Storages/MergeTree/AllMergeSelector.cpp
Ivan 97f2a2213e
Move all folders inside /dbms one level up (#9974)
* Move some code outside dbms/src folder
* Fix paths
2020-04-02 02:51:21 +03:00

39 lines
804 B
C++

#include <Storages/MergeTree/AllMergeSelector.h>
#include <cmath>
namespace DB
{
AllMergeSelector::PartsInPartition AllMergeSelector::select(
const Partitions & partitions,
const size_t /*max_total_size_to_merge*/)
{
size_t min_partition_size = 0;
Partitions::const_iterator best_partition;
for (auto it = partitions.begin(); it != partitions.end(); ++it)
{
if (it->size() <= 1)
continue;
size_t sum_size = 0;
for (const auto & part : *it)
sum_size += part.size;
if (!min_partition_size || sum_size < min_partition_size)
{
min_partition_size = sum_size;
best_partition = it;
}
}
if (min_partition_size)
return *best_partition;
else
return {};
}
}