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31 lines
546 B
C++
31 lines
546 B
C++
#pragma once
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#include <DB/Storages/MergeTree/MergeSelector.h>
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namespace DB
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{
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/** Select parts to merge based on its level.
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* Select first range of parts of parts_to_merge length with minimum level.
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*/
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class LevelMergeSelector : public IMergeSelector
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{
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public:
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struct Settings
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{
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size_t parts_to_merge = 10;
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};
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LevelMergeSelector(const Settings & settings) : settings(settings) {}
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PartsInPartition select(
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const Partitions & partitions,
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const size_t max_total_size_to_merge) override;
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private:
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const Settings settings;
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};
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}
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