e3f561db31
We should separate the scheduling groups used for major compaction from the the regular compaction scheduling group so that the latter can be affected by the backlog tracker in case backlog accumulates during a long running major compaction. Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
85 lines
3.6 KiB
C++
85 lines
3.6 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 "cql3/statements/property_definitions.hh"
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#include "compaction_backlog_manager.hh"
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#include "compaction_strategy.hh"
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#include "db_clock.hh"
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#include "compaction_descriptor.hh"
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namespace compaction {
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class table_state;
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class strategy_control;
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}
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namespace sstables {
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compaction_backlog_tracker& get_unimplemented_backlog_tracker();
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class sstable_set_impl;
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class resharding_descriptor;
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class compaction_strategy_impl {
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static constexpr float DEFAULT_TOMBSTONE_THRESHOLD = 0.2f;
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// minimum interval needed to perform tombstone removal compaction in seconds, default 86400 or 1 day.
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static constexpr std::chrono::seconds DEFAULT_TOMBSTONE_COMPACTION_INTERVAL() { return std::chrono::seconds(86400); }
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protected:
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const sstring TOMBSTONE_THRESHOLD_OPTION = "tombstone_threshold";
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const sstring TOMBSTONE_COMPACTION_INTERVAL_OPTION = "tombstone_compaction_interval";
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bool _use_clustering_key_filter = false;
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bool _disable_tombstone_compaction = false;
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float _tombstone_threshold = DEFAULT_TOMBSTONE_THRESHOLD;
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db_clock::duration _tombstone_compaction_interval = DEFAULT_TOMBSTONE_COMPACTION_INTERVAL();
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public:
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static std::optional<sstring> get_value(const std::map<sstring, sstring>& options, const sstring& name);
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protected:
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compaction_strategy_impl() = default;
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explicit compaction_strategy_impl(const std::map<sstring, sstring>& options);
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static compaction_descriptor make_major_compaction_job(std::vector<sstables::shared_sstable> candidates,
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int level = compaction_descriptor::default_level,
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uint64_t max_sstable_bytes = compaction_descriptor::default_max_sstable_bytes);
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public:
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virtual ~compaction_strategy_impl() {}
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virtual compaction_descriptor get_sstables_for_compaction(table_state& table_s, strategy_control& control, std::vector<sstables::shared_sstable> candidates) = 0;
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virtual compaction_descriptor get_major_compaction_job(table_state& table_s, std::vector<sstables::shared_sstable> candidates) {
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return make_major_compaction_job(std::move(candidates));
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}
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virtual std::vector<compaction_descriptor> get_cleanup_compaction_jobs(table_state& table_s, std::vector<shared_sstable> candidates) const;
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virtual void notify_completion(const std::vector<shared_sstable>& removed, const std::vector<shared_sstable>& added) { }
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virtual compaction_strategy_type type() const = 0;
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virtual bool parallel_compaction() const {
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return true;
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}
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virtual int64_t estimated_pending_compactions(table_state& table_s) const = 0;
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virtual std::unique_ptr<sstable_set_impl> make_sstable_set(schema_ptr schema) const;
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bool use_clustering_key_filter() const {
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return _use_clustering_key_filter;
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}
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// Check if a given sstable is entitled for tombstone compaction based on its
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// droppable tombstone histogram and gc_before.
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bool worth_dropping_tombstones(const shared_sstable& sst, gc_clock::time_point compaction_time);
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virtual compaction_backlog_tracker& get_backlog_tracker() = 0;
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virtual uint64_t adjust_partition_estimate(const mutation_source_metadata& ms_meta, uint64_t partition_estimate);
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virtual reader_consumer_v2 make_interposer_consumer(const mutation_source_metadata& ms_meta, reader_consumer_v2 end_consumer);
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virtual bool use_interposer_consumer() const {
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return false;
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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);
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};
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}
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