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fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*
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* Copyright (C) 2017-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <optional>
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#include <vector>
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#include <map>
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#include <memory>
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#include <seastar/core/sstring.hh>
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#include "compaction_strategy_type.hh"
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#include "size_tiered_compaction_strategy.hh"
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#include "compaction_strategy_impl.hh"
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#include "compaction_backlog_manager.hh"
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#include "sstables/shared_sstable.hh"
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class leveled_manifest;
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namespace sstables {
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class sstable_set_impl;
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class leveled_compaction_strategy : public compaction_strategy_impl {
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static constexpr int32_t DEFAULT_MAX_SSTABLE_SIZE_IN_MB = 160;
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const sstring SSTABLE_SIZE_OPTION = "sstable_size_in_mb";
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int32_t _max_sstable_size_in_mb = DEFAULT_MAX_SSTABLE_SIZE_IN_MB;
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std::optional<std::vector<std::optional<dht::decorated_key>>> _last_compacted_keys;
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std::vector<int> _compaction_counter;
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size_tiered_compaction_strategy_options _stcs_options;
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compaction_backlog_tracker _backlog_tracker;
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int32_t calculate_max_sstable_size_in_mb(std::optional<sstring> option_value) const;
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public:
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leveled_compaction_strategy(const std::map<sstring, sstring>& options);
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virtual compaction_descriptor get_sstables_for_compaction(table_state& table_s, strategy_control& control, std::vector<sstables::shared_sstable> candidates) override;
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virtual compaction_descriptor get_major_compaction_job(table_state& table_s, std::vector<sstables::shared_sstable> candidates) override;
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virtual void notify_completion(const std::vector<shared_sstable>& removed, const std::vector<shared_sstable>& added) override;
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// for each level > 0, get newest sstable and use its last key as last
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// compacted key for the previous level.
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void generate_last_compacted_keys(leveled_manifest& manifest);
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virtual int64_t estimated_pending_compactions(table_state& table_s) const override;
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virtual bool parallel_compaction() const override {
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return false;
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}
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virtual compaction_strategy_type type() const override {
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return compaction_strategy_type::leveled;
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}
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virtual std::unique_ptr<sstable_set_impl> make_sstable_set(schema_ptr schema) const override;
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virtual compaction_backlog_tracker& get_backlog_tracker() override {
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return _backlog_tracker;
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}
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virtual compaction_descriptor get_reshaping_job(std::vector<shared_sstable> input, schema_ptr schema, const ::io_priority_class& iop, reshape_mode mode) override;
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};
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}
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