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44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
#pragma once
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#include <unordered_map>
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#include <Storages/MergeTree/MergeTreePartInfo.h>
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#include <Storages/MergeTree/MergeTreeDataFormatVersion.h>
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#include <Storages/MergeTree/ReplicatedMergeTreeLogEntry.h>
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namespace DB
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{
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/// All drop ranges in ReplicatedQueue.
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/// Used to postpone execution of entries affected by DROP RANGE
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class DropPartsRanges
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{
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private:
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MergeTreeDataFormatVersion format_version;
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/// znode_name -> drop_range
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std::unordered_map<std::string, MergeTreePartInfo> drop_ranges;
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public:
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explicit DropPartsRanges(MergeTreeDataFormatVersion format_version_)
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: format_version(format_version_)
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{}
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/// Entry is affected by DROP_RANGE and must be postponed
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bool isAffectedByDropRange(const ReplicatedMergeTreeLogEntry & entry, std::string & postpone_reason) const;
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/// Part is affected by DROP_RANGE and must be postponed
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bool isAffectedByDropRange(const std::string & new_part_name, std::string & postpone_reason) const;
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/// Already has equal DROP_RANGE. Don't need to assign new one
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bool hasDropRange(const MergeTreePartInfo & new_drop_range_info, MergeTreePartInfo * out_drop_range_info = nullptr) const;
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/// Add DROP_RANGE to map
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void addDropRange(const ReplicatedMergeTreeLogEntryPtr & entry);
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/// Remove DROP_RANGE from map
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void removeDropRange(const ReplicatedMergeTreeLogEntryPtr & entry);
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};
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}
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