83c70ac04f
Can be easily reused elsewhere. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
1782 lines
78 KiB
C++
1782 lines
78 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
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*/
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/*
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*/
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#include <vector>
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#include <map>
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#include <functional>
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#include <utility>
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#include <assert.h>
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#include <algorithm>
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#include <boost/range/algorithm.hpp>
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#include <boost/range/adaptors.hpp>
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#include <boost/range/join.hpp>
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#include <boost/algorithm/cxx11/any_of.hpp>
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#include <boost/algorithm/string/join.hpp>
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#include <seastar/core/future-util.hh>
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#include <seastar/core/scheduling.hh>
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#include <seastar/core/coroutine.hh>
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#include <seastar/util/closeable.hh>
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#include <seastar/core/shared_ptr.hh>
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#include "dht/i_partitioner.hh"
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#include "sstables/sstables.hh"
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#include "sstables/sstable_writer.hh"
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#include "sstables/progress_monitor.hh"
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#include "sstables/sstables_manager.hh"
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#include "compaction.hh"
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#include "compaction_manager.hh"
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#include "schema/schema.hh"
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#include "db/system_keyspace.hh"
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#include "db_clock.hh"
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#include "mutation/mutation_compactor.hh"
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#include "leveled_manifest.hh"
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#include "dht/token.hh"
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#include "dht/partition_filter.hh"
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#include "mutation_writer/shard_based_splitting_writer.hh"
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#include "mutation_writer/partition_based_splitting_writer.hh"
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#include "mutation/mutation_source_metadata.hh"
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#include "mutation/mutation_fragment_stream_validator.hh"
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#include "utils/UUID_gen.hh"
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#include "utils/utf8.hh"
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#include "utils/fmt-compat.hh"
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#include "utils/error_injection.hh"
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#include "readers/filtering.hh"
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#include "readers/compacting.hh"
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#include "tombstone_gc.hh"
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#include "keys.hh"
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#include "replica/database.hh"
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namespace sstables {
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bool is_eligible_for_compaction(const shared_sstable& sst) noexcept {
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return !sst->requires_view_building() && !sst->is_quarantined();
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}
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logging::logger clogger("compaction");
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static const std::unordered_map<compaction_type, sstring> compaction_types = {
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{ compaction_type::Compaction, "COMPACTION" },
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{ compaction_type::Cleanup, "CLEANUP" },
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{ compaction_type::Validation, "VALIDATION" },
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{ compaction_type::Scrub, "SCRUB" },
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{ compaction_type::Index_build, "INDEX_BUILD" },
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{ compaction_type::Reshard, "RESHARD" },
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{ compaction_type::Upgrade, "UPGRADE" },
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{ compaction_type::Reshape, "RESHAPE" },
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};
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sstring compaction_name(compaction_type type) {
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auto ret = compaction_types.find(type);
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if (ret != compaction_types.end()) {
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return ret->second;
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}
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throw std::runtime_error("Invalid Compaction Type");
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}
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compaction_type to_compaction_type(sstring type_name) {
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for (auto& it : compaction_types) {
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if (it.second == type_name) {
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return it.first;
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}
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}
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throw std::runtime_error("Invalid Compaction Type Name");
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}
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std::string_view to_string(compaction_type type) {
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switch (type) {
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case compaction_type::Compaction: return "Compact";
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case compaction_type::Cleanup: return "Cleanup";
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case compaction_type::Validation: return "Validate";
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case compaction_type::Scrub: return "Scrub";
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case compaction_type::Index_build: return "Index_build";
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case compaction_type::Reshard: return "Reshard";
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case compaction_type::Upgrade: return "Upgrade";
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case compaction_type::Reshape: return "Reshape";
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}
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on_internal_error_noexcept(clogger, format("Invalid compaction type {}", int(type)));
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return "(invalid)";
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}
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std::ostream& operator<<(std::ostream& os, compaction_type type) {
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os << to_string(type);
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return os;
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}
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std::string_view to_string(compaction_type_options::scrub::mode scrub_mode) {
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switch (scrub_mode) {
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case compaction_type_options::scrub::mode::abort:
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return "abort";
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case compaction_type_options::scrub::mode::skip:
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return "skip";
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case compaction_type_options::scrub::mode::segregate:
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return "segregate";
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case compaction_type_options::scrub::mode::validate:
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return "validate";
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}
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on_internal_error_noexcept(clogger, format("Invalid scrub mode {}", int(scrub_mode)));
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return "(invalid)";
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}
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std::ostream& operator<<(std::ostream& os, compaction_type_options::scrub::mode scrub_mode) {
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return os << to_string(scrub_mode);
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}
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std::string_view to_string(compaction_type_options::scrub::quarantine_mode quarantine_mode) {
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switch (quarantine_mode) {
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case compaction_type_options::scrub::quarantine_mode::include:
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return "include";
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case compaction_type_options::scrub::quarantine_mode::exclude:
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return "exclude";
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case compaction_type_options::scrub::quarantine_mode::only:
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return "only";
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}
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on_internal_error_noexcept(clogger, format("Invalid scrub quarantine mode {}", int(quarantine_mode)));
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return "(invalid)";
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}
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std::ostream& operator<<(std::ostream& os, compaction_type_options::scrub::quarantine_mode quarantine_mode) {
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return os << to_string(quarantine_mode);
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}
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static api::timestamp_type get_max_purgeable_timestamp(const table_state& table_s, sstable_set::incremental_selector& selector,
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const std::unordered_set<shared_sstable>& compacting_set, const dht::decorated_key& dk, uint64_t& bloom_filter_checks) {
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if (!table_s.tombstone_gc_enabled()) [[unlikely]] {
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return api::min_timestamp;
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}
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auto timestamp = table_s.min_memtable_timestamp();
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std::optional<utils::hashed_key> hk;
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for (auto&& sst : boost::range::join(selector.select(dk).sstables, table_s.compacted_undeleted_sstables())) {
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if (compacting_set.contains(sst)) {
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continue;
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}
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if (!hk) {
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hk = sstables::sstable::make_hashed_key(*table_s.schema(), dk.key());
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}
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if (sst->filter_has_key(*hk)) {
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bloom_filter_checks++;
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timestamp = std::min(timestamp, sst->get_stats_metadata().min_timestamp);
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}
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}
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return timestamp;
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}
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static std::vector<shared_sstable> get_uncompacting_sstables(const table_state& table_s, std::vector<shared_sstable> sstables) {
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auto all_sstables = boost::copy_range<std::vector<shared_sstable>>(*table_s.main_sstable_set().all());
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auto& compacted_undeleted = table_s.compacted_undeleted_sstables();
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all_sstables.insert(all_sstables.end(), compacted_undeleted.begin(), compacted_undeleted.end());
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boost::sort(all_sstables, [] (const shared_sstable& x, const shared_sstable& y) {
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return x->generation() < y->generation();
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});
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std::sort(sstables.begin(), sstables.end(), [] (const shared_sstable& x, const shared_sstable& y) {
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return x->generation() < y->generation();
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});
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std::vector<shared_sstable> not_compacted_sstables;
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boost::set_difference(all_sstables, sstables,
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std::back_inserter(not_compacted_sstables), [] (const shared_sstable& x, const shared_sstable& y) {
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return x->generation() < y->generation();
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});
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return not_compacted_sstables;
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}
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class compaction;
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class compaction_write_monitor final : public sstables::write_monitor, public backlog_write_progress_manager {
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sstables::shared_sstable _sst;
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table_state& _table_s;
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const sstables::writer_offset_tracker* _tracker = nullptr;
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uint64_t _progress_seen = 0;
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api::timestamp_type _maximum_timestamp;
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unsigned _sstable_level;
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public:
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compaction_write_monitor(sstables::shared_sstable sst, table_state& table_s, api::timestamp_type max_timestamp, unsigned sstable_level)
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: _sst(sst)
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, _table_s(table_s)
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, _maximum_timestamp(max_timestamp)
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, _sstable_level(sstable_level)
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{}
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~compaction_write_monitor() {
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if (_sst) {
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_table_s.get_backlog_tracker().revert_charges(_sst);
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}
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}
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virtual void on_write_started(const sstables::writer_offset_tracker& tracker) override {
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_tracker = &tracker;
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_table_s.get_backlog_tracker().register_partially_written_sstable(_sst, *this);
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}
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virtual void on_data_write_completed() override {
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if (_tracker) {
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_progress_seen = _tracker->offset;
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_tracker = nullptr;
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}
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}
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virtual uint64_t written() const override {
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if (_tracker) {
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return _tracker->offset;
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}
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return _progress_seen;
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}
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api::timestamp_type maximum_timestamp() const override {
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return _maximum_timestamp;
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}
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unsigned level() const override {
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return _sstable_level;
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}
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};
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struct compaction_writer {
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shared_sstable sst;
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// We use a ptr for pointer stability and so that it can be null
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// when using a noop monitor.
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sstable_writer writer;
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// The order in here is important. A monitor must be destroyed before the writer it is monitoring since it has a
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// periodic timer that checks the writer.
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// The writer must be destroyed before the shared_sstable since the it may depend on the sstable
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// (as in the mx::writer over compressed_file_data_sink_impl case that depends on sstables::compression).
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std::unique_ptr<compaction_write_monitor> monitor;
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compaction_writer(std::unique_ptr<compaction_write_monitor> monitor, sstable_writer writer, shared_sstable sst)
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: sst(std::move(sst)), writer(std::move(writer)), monitor(std::move(monitor)) {}
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compaction_writer(sstable_writer writer, shared_sstable sst)
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: compaction_writer(nullptr, std::move(writer), std::move(sst)) {}
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};
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class compacted_fragments_writer {
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compaction& _c;
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std::optional<compaction_writer> _compaction_writer = {};
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using creator_func_t = std::function<compaction_writer(const dht::decorated_key&)>;
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using stop_func_t = std::function<void(compaction_writer*)>;
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creator_func_t _create_compaction_writer;
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stop_func_t _stop_compaction_writer;
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std::optional<utils::observer<>> _stop_request_observer;
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bool _unclosed_partition = false;
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struct partition_state {
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dht::decorated_key_opt dk;
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// Partition tombstone is saved for the purpose of replicating it to every fragment storing a partition pL.
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// Then when reading from the SSTable run, we won't unnecessarily have to open >= 2 fragments, the one which
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// contains the tombstone and another one(s) that has the partition slice being queried.
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::tombstone tombstone;
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// Used to determine whether any active tombstones need closing at EOS.
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::tombstone current_emitted_tombstone;
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// Track last emitted clustering row, which will be used to close active tombstone if splitting partition
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position_in_partition last_pos = position_in_partition::before_all_clustered_rows();
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bool is_splitting_partition = false;
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} _current_partition;
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private:
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inline void maybe_abort_compaction();
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utils::observer<> make_stop_request_observer(utils::observable<>& sro) {
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return sro.observe([this] () mutable {
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assert(!_unclosed_partition);
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consume_end_of_stream();
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});
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}
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void stop_current_writer();
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bool can_split_large_partition() const;
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void track_last_position(position_in_partition_view pos);
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void split_large_partition();
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void do_consume_new_partition(const dht::decorated_key& dk);
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stop_iteration do_consume_end_of_partition();
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public:
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explicit compacted_fragments_writer(compaction& c, creator_func_t cpw, stop_func_t scw)
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: _c(c)
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, _create_compaction_writer(std::move(cpw))
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, _stop_compaction_writer(std::move(scw)) {
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}
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explicit compacted_fragments_writer(compaction& c, creator_func_t cpw, stop_func_t scw, utils::observable<>& sro)
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: _c(c)
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, _create_compaction_writer(std::move(cpw))
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, _stop_compaction_writer(std::move(scw))
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, _stop_request_observer(make_stop_request_observer(sro)) {
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}
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compacted_fragments_writer(compacted_fragments_writer&& other);
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compacted_fragments_writer& operator=(const compacted_fragments_writer&) = delete;
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compacted_fragments_writer(const compacted_fragments_writer&) = delete;
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void consume_new_partition(const dht::decorated_key& dk);
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void consume(tombstone t);
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stop_iteration consume(static_row&& sr, tombstone, bool) {
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maybe_abort_compaction();
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return _compaction_writer->writer.consume(std::move(sr));
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}
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stop_iteration consume(static_row&& sr) {
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return consume(std::move(sr), tombstone{}, bool{});
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}
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stop_iteration consume(clustering_row&& cr, row_tombstone, bool);
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stop_iteration consume(clustering_row&& cr) {
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return consume(std::move(cr), row_tombstone{}, bool{});
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}
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stop_iteration consume(range_tombstone_change&& rtc);
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stop_iteration consume_end_of_partition();
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void consume_end_of_stream();
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};
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struct compaction_read_monitor_generator final : public read_monitor_generator {
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class compaction_read_monitor final : public sstables::read_monitor, public backlog_read_progress_manager {
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sstables::shared_sstable _sst;
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table_state& _table_s;
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const sstables::reader_position_tracker* _tracker = nullptr;
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uint64_t _last_position_seen = 0;
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public:
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virtual void on_read_started(const sstables::reader_position_tracker& tracker) override {
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_tracker = &tracker;
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_table_s.get_backlog_tracker().register_compacting_sstable(_sst, *this);
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}
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virtual void on_read_completed() override {
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if (_tracker) {
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_last_position_seen = _tracker->position;
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_tracker = nullptr;
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}
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}
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virtual uint64_t compacted() const override {
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if (_tracker) {
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return _tracker->position;
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}
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return _last_position_seen;
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}
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void remove_sstable() {
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if (_sst) {
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_table_s.get_backlog_tracker().revert_charges(_sst);
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}
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_sst = {};
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}
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compaction_read_monitor(sstables::shared_sstable sst, table_state& table_s)
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: _sst(std::move(sst)), _table_s(table_s) { }
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~compaction_read_monitor() {
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// We failed to finish handling this SSTable, so we have to update the backlog_tracker
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// about it.
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if (_sst) {
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_table_s.get_backlog_tracker().revert_charges(_sst);
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}
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}
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friend class compaction_read_monitor_generator;
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};
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virtual sstables::read_monitor& operator()(sstables::shared_sstable sst) override {
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auto p = _generated_monitors.emplace(sst->generation(), compaction_read_monitor(sst, _table_s));
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return p.first->second;
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}
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explicit compaction_read_monitor_generator(table_state& table_s)
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: _table_s(table_s) {}
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void remove_exhausted_sstables(const std::vector<sstables::shared_sstable>& exhausted_sstables) {
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for (auto& sst : exhausted_sstables) {
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auto it = _generated_monitors.find(sst->generation());
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if (it != _generated_monitors.end()) {
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it->second.remove_sstable();
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}
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}
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}
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private:
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table_state& _table_s;
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std::unordered_map<generation_type, compaction_read_monitor> _generated_monitors;
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};
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class formatted_sstables_list {
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bool _include_origin = true;
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std::vector<std::string> _ssts;
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public:
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formatted_sstables_list() = default;
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void reserve(size_t n) {
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_ssts.reserve(n);
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}
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explicit formatted_sstables_list(const std::vector<shared_sstable>& ssts, bool include_origin) : _include_origin(include_origin) {
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_ssts.reserve(ssts.size());
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for (const auto& sst : ssts) {
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*this += sst;
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}
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}
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formatted_sstables_list& operator+=(const shared_sstable& sst) {
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_ssts.emplace_back(to_string(sst, _include_origin));
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return *this;
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}
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friend std::ostream& operator<<(std::ostream& os, const formatted_sstables_list& lst);
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};
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std::ostream& operator<<(std::ostream& os, const formatted_sstables_list& lst) {
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fmt::print(os, "[{}]", fmt::join(lst._ssts, ","));
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return os;
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}
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class compaction {
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protected:
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compaction_data& _cdata;
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table_state& _table_s;
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compaction_sstable_creator_fn _sstable_creator;
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schema_ptr _schema;
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reader_permit _permit;
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std::vector<shared_sstable> _sstables;
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std::vector<generation_type> _input_sstable_generations;
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// Unused sstables are tracked because if compaction is interrupted we can only delete them.
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// Deleting used sstables could potentially result in data loss.
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std::unordered_set<shared_sstable> _new_partial_sstables;
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std::vector<shared_sstable> _new_unused_sstables;
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std::vector<shared_sstable> _all_new_sstables;
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lw_shared_ptr<sstable_set> _compacting;
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sstables::compaction_type _type;
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uint64_t _max_sstable_size;
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uint32_t _sstable_level;
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uint64_t _start_size = 0;
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uint64_t _end_size = 0;
|
|
uint64_t _estimated_partitions = 0;
|
|
uint64_t _bloom_filter_checks = 0;
|
|
db::replay_position _rp;
|
|
encoding_stats_collector _stats_collector;
|
|
bool _can_split_large_partition = false;
|
|
bool _contains_multi_fragment_runs = false;
|
|
mutation_source_metadata _ms_metadata = {};
|
|
compaction_sstable_replacer_fn _replacer;
|
|
run_id _run_identifier;
|
|
// optional clone of sstable set to be used for expiration purposes, so it will be set if expiration is enabled.
|
|
std::optional<sstable_set> _sstable_set;
|
|
// used to incrementally calculate max purgeable timestamp, as we iterate through decorated keys.
|
|
std::optional<sstable_set::incremental_selector> _selector;
|
|
std::unordered_set<shared_sstable> _compacting_for_max_purgeable_func;
|
|
// optional owned_ranges vector for cleanup;
|
|
owned_ranges_ptr _owned_ranges = {};
|
|
// required for reshard compaction.
|
|
const dht::sharder* _sharder = nullptr;
|
|
std::optional<dht::incremental_owned_ranges_checker> _owned_ranges_checker;
|
|
// Garbage collected sstables that are sealed but were not added to SSTable set yet.
|
|
std::vector<shared_sstable> _unused_garbage_collected_sstables;
|
|
// Garbage collected sstables that were added to SSTable set and should be eventually removed from it.
|
|
std::vector<shared_sstable> _used_garbage_collected_sstables;
|
|
utils::observable<> _stop_request_observable;
|
|
private:
|
|
compaction_data& init_compaction_data(compaction_data& cdata, const compaction_descriptor& descriptor) const {
|
|
cdata.compaction_fan_in = descriptor.fan_in();
|
|
return cdata;
|
|
}
|
|
protected:
|
|
compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata)
|
|
: _cdata(init_compaction_data(cdata, descriptor))
|
|
, _table_s(table_s)
|
|
, _sstable_creator(std::move(descriptor.creator))
|
|
, _schema(_table_s.schema())
|
|
, _permit(_table_s.make_compaction_reader_permit())
|
|
, _sstables(std::move(descriptor.sstables))
|
|
, _type(descriptor.options.type())
|
|
, _max_sstable_size(descriptor.max_sstable_bytes)
|
|
, _sstable_level(descriptor.level)
|
|
, _can_split_large_partition(descriptor.can_split_large_partition)
|
|
, _replacer(std::move(descriptor.replacer))
|
|
, _run_identifier(descriptor.run_identifier)
|
|
, _sstable_set(std::move(descriptor.all_sstables_snapshot))
|
|
, _selector(_sstable_set ? _sstable_set->make_incremental_selector() : std::optional<sstable_set::incremental_selector>{})
|
|
, _compacting_for_max_purgeable_func(std::unordered_set<shared_sstable>(_sstables.begin(), _sstables.end()))
|
|
, _owned_ranges(std::move(descriptor.owned_ranges))
|
|
, _sharder(descriptor.sharder)
|
|
, _owned_ranges_checker(_owned_ranges ? std::optional<dht::incremental_owned_ranges_checker>(*_owned_ranges) : std::nullopt)
|
|
{
|
|
for (auto& sst : _sstables) {
|
|
_stats_collector.update(sst->get_encoding_stats_for_compaction());
|
|
}
|
|
std::unordered_set<run_id> ssts_run_ids;
|
|
_contains_multi_fragment_runs = std::any_of(_sstables.begin(), _sstables.end(), [&ssts_run_ids] (shared_sstable& sst) {
|
|
return !ssts_run_ids.insert(sst->run_identifier()).second;
|
|
});
|
|
}
|
|
|
|
virtual uint64_t partitions_per_sstable() const {
|
|
// some tests use _max_sstable_size == 0 for force many one partition per sstable
|
|
auto max_sstable_size = std::max<uint64_t>(_max_sstable_size, 1);
|
|
uint64_t estimated_sstables = std::max(1UL, uint64_t(ceil(double(_start_size) / max_sstable_size)));
|
|
return std::min(uint64_t(ceil(double(_estimated_partitions) / estimated_sstables)),
|
|
_table_s.get_compaction_strategy().adjust_partition_estimate(_ms_metadata, _estimated_partitions));
|
|
}
|
|
|
|
void setup_new_sstable(shared_sstable& sst) {
|
|
_all_new_sstables.push_back(sst);
|
|
_new_partial_sstables.insert(sst);
|
|
for (auto ancestor : _input_sstable_generations) {
|
|
sst->add_ancestor(ancestor);
|
|
}
|
|
}
|
|
|
|
void finish_new_sstable(compaction_writer* writer) {
|
|
writer->writer.consume_end_of_stream();
|
|
writer->sst->open_data().get0();
|
|
_end_size += writer->sst->bytes_on_disk();
|
|
_new_unused_sstables.push_back(writer->sst);
|
|
_new_partial_sstables.erase(writer->sst);
|
|
}
|
|
|
|
sstable_writer_config make_sstable_writer_config(compaction_type type) {
|
|
auto s = compaction_name(type);
|
|
std::transform(s.begin(), s.end(), s.begin(), [] (char c) {
|
|
return std::tolower(c);
|
|
});
|
|
sstable_writer_config cfg = _table_s.configure_writer(std::move(s));
|
|
cfg.max_sstable_size = _max_sstable_size;
|
|
cfg.monitor = &default_write_monitor();
|
|
cfg.run_identifier = _run_identifier;
|
|
cfg.replay_position = _rp;
|
|
cfg.sstable_level = _sstable_level;
|
|
return cfg;
|
|
}
|
|
|
|
api::timestamp_type maximum_timestamp() const {
|
|
auto m = std::max_element(_sstables.begin(), _sstables.end(), [] (const shared_sstable& sst1, const shared_sstable& sst2) {
|
|
return sst1->get_stats_metadata().max_timestamp < sst2->get_stats_metadata().max_timestamp;
|
|
});
|
|
return (*m)->get_stats_metadata().max_timestamp;
|
|
}
|
|
|
|
encoding_stats get_encoding_stats() const {
|
|
return _stats_collector.get();
|
|
}
|
|
|
|
virtual compaction_completion_desc
|
|
get_compaction_completion_desc(std::vector<shared_sstable> input_sstables, std::vector<shared_sstable> output_sstables) {
|
|
return compaction_completion_desc{std::move(input_sstables), std::move(output_sstables)};
|
|
}
|
|
|
|
// Tombstone expiration is enabled based on the presence of sstable set.
|
|
// If it's not present, we cannot purge tombstones without the risk of resurrecting data.
|
|
bool tombstone_expiration_enabled() const {
|
|
return bool(_sstable_set) && _table_s.tombstone_gc_enabled();
|
|
}
|
|
|
|
compaction_writer create_gc_compaction_writer() const {
|
|
auto sst = _sstable_creator(this_shard_id());
|
|
|
|
auto monitor = std::make_unique<compaction_write_monitor>(sst, _table_s, maximum_timestamp(), _sstable_level);
|
|
sstable_writer_config cfg = _table_s.configure_writer("garbage_collection");
|
|
cfg.run_identifier = _run_identifier;
|
|
cfg.monitor = monitor.get();
|
|
auto writer = sst->get_writer(*schema(), partitions_per_sstable(), cfg, get_encoding_stats());
|
|
return compaction_writer(std::move(monitor), std::move(writer), std::move(sst));
|
|
}
|
|
|
|
void stop_gc_compaction_writer(compaction_writer* c_writer) {
|
|
c_writer->writer.consume_end_of_stream();
|
|
auto sst = c_writer->sst;
|
|
sst->open_data().get0();
|
|
_unused_garbage_collected_sstables.push_back(std::move(sst));
|
|
}
|
|
|
|
// Writes a temporary sstable run containing only garbage collected data.
|
|
// Whenever regular compaction writer seals a new sstable, this writer will flush a new sstable as well,
|
|
// right before there's an attempt to release exhausted sstables earlier.
|
|
// Generated sstables will be temporarily added to table to make sure that a compaction crash will not
|
|
// result in data resurrection.
|
|
// When compaction finishes, all the temporary sstables generated here will be deleted and removed
|
|
// from table's sstable set.
|
|
compacted_fragments_writer get_gc_compacted_fragments_writer() {
|
|
return compacted_fragments_writer(*this,
|
|
[this] (const dht::decorated_key&) { return create_gc_compaction_writer(); },
|
|
[this] (compaction_writer* cw) { stop_gc_compaction_writer(cw); },
|
|
_stop_request_observable);
|
|
}
|
|
|
|
// Retrieves all unused garbage collected sstables that will be subsequently added
|
|
// to the SSTable set, and mark them as used.
|
|
std::vector<shared_sstable> consume_unused_garbage_collected_sstables() {
|
|
auto unused = std::exchange(_unused_garbage_collected_sstables, {});
|
|
_used_garbage_collected_sstables.insert(_used_garbage_collected_sstables.end(), unused.begin(), unused.end());
|
|
return unused;
|
|
}
|
|
|
|
const std::vector<shared_sstable>& used_garbage_collected_sstables() const {
|
|
return _used_garbage_collected_sstables;
|
|
}
|
|
|
|
bool enable_garbage_collected_sstable_writer() const noexcept {
|
|
return _contains_multi_fragment_runs && _max_sstable_size != std::numeric_limits<uint64_t>::max();
|
|
}
|
|
|
|
flat_mutation_reader_v2::filter make_partition_filter() const {
|
|
return [this] (const dht::decorated_key& dk) {
|
|
if (!_owned_ranges_checker->belongs_to_current_node(dk.token())) {
|
|
log_trace("Token {} does not belong to this node, skipping", dk.token());
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
}
|
|
public:
|
|
compaction& operator=(const compaction&) = delete;
|
|
compaction(const compaction&) = delete;
|
|
|
|
compaction(compaction&& other) = delete;
|
|
compaction& operator=(compaction&& other) = delete;
|
|
|
|
virtual ~compaction() {
|
|
}
|
|
private:
|
|
// Default range sstable reader that will only return mutation that belongs to current shard.
|
|
virtual flat_mutation_reader_v2 make_sstable_reader() const = 0;
|
|
|
|
// Make a filtering reader if needed
|
|
// FIXME: the sstable reader itself should be pass the owned ranges
|
|
// so it can skip over the disowned ranges efficiently using the index.
|
|
// Ref https://github.com/scylladb/scylladb/issues/12998
|
|
flat_mutation_reader_v2 setup_sstable_reader() const {
|
|
if (!_owned_ranges_checker) {
|
|
return make_sstable_reader();
|
|
}
|
|
return make_filtering_reader(make_sstable_reader(), make_partition_filter());
|
|
}
|
|
|
|
virtual sstables::sstable_set make_sstable_set_for_input() const {
|
|
return _table_s.get_compaction_strategy().make_sstable_set(_schema);
|
|
}
|
|
|
|
future<> setup() {
|
|
auto ssts = make_lw_shared<sstables::sstable_set>(make_sstable_set_for_input());
|
|
formatted_sstables_list formatted_msg;
|
|
formatted_msg.reserve(_sstables.size());
|
|
auto fully_expired = _table_s.fully_expired_sstables(_sstables, gc_clock::now());
|
|
min_max_tracker<api::timestamp_type> timestamp_tracker;
|
|
|
|
_input_sstable_generations.reserve(_sstables.size());
|
|
for (auto& sst : _sstables) {
|
|
co_await coroutine::maybe_yield();
|
|
auto& sst_stats = sst->get_stats_metadata();
|
|
timestamp_tracker.update(sst_stats.min_timestamp);
|
|
timestamp_tracker.update(sst_stats.max_timestamp);
|
|
|
|
// Compacted sstable keeps track of its ancestors.
|
|
_input_sstable_generations.push_back(sst->generation());
|
|
_start_size += sst->bytes_on_disk();
|
|
_cdata.total_partitions += sst->get_estimated_key_count();
|
|
formatted_msg += sst;
|
|
|
|
// Do not actually compact a sstable that is fully expired and can be safely
|
|
// dropped without ressurrecting old data.
|
|
if (tombstone_expiration_enabled() && fully_expired.contains(sst)) {
|
|
log_debug("Fully expired sstable {} will be dropped on compaction completion", sst->get_filename());
|
|
continue;
|
|
}
|
|
|
|
// We also capture the sstable, so we keep it alive while the read isn't done
|
|
ssts->insert(sst);
|
|
// FIXME: If the sstables have cardinality estimation bitmaps, use that
|
|
// for a better estimate for the number of partitions in the merged
|
|
// sstable than just adding up the lengths of individual sstables.
|
|
_estimated_partitions += sst->get_estimated_key_count();
|
|
// TODO:
|
|
// Note that this is not fully correct. Since we might be merging sstables that originated on
|
|
// another shard (#cpu changed), we might be comparing RP:s with differing shard ids,
|
|
// which might vary in "comparable" size quite a bit. However, since the worst that happens
|
|
// is that we might miss a high water mark for the commit log replayer,
|
|
// this is kind of ok, esp. since we will hopefully not be trying to recover based on
|
|
// compacted sstables anyway (CL should be clean by then).
|
|
_rp = std::max(_rp, sst_stats.position);
|
|
}
|
|
log_info("{} {}", report_start_desc(), formatted_msg);
|
|
if (ssts->size() < _sstables.size()) {
|
|
log_debug("{} out of {} input sstables are fully expired sstables that will not be actually compacted",
|
|
_sstables.size() - ssts->size(), _sstables.size());
|
|
}
|
|
|
|
_compacting = std::move(ssts);
|
|
|
|
_ms_metadata.min_timestamp = timestamp_tracker.min();
|
|
_ms_metadata.max_timestamp = timestamp_tracker.max();
|
|
}
|
|
|
|
// This consumer will perform mutation compaction on producer side using
|
|
// compacting_reader. It's useful for allowing data from different buckets
|
|
// to be compacted together.
|
|
future<> consume_without_gc_writer(gc_clock::time_point compaction_time) {
|
|
auto consumer = make_interposer_consumer([this] (flat_mutation_reader_v2 reader) mutable {
|
|
return seastar::async([this, reader = std::move(reader)] () mutable {
|
|
auto close_reader = deferred_close(reader);
|
|
auto cfc = compacted_fragments_writer(get_compacted_fragments_writer());
|
|
reader.consume_in_thread(std::move(cfc));
|
|
});
|
|
});
|
|
const auto& gc_state = _table_s.get_tombstone_gc_state();
|
|
return consumer(make_compacting_reader(setup_sstable_reader(), compaction_time, max_purgeable_func(), gc_state));
|
|
}
|
|
|
|
future<> consume() {
|
|
auto now = gc_clock::now();
|
|
// consume_without_gc_writer(), which uses compacting_reader, is ~3% slower.
|
|
// let's only use it when GC writer is disabled and interposer consumer is enabled, as we
|
|
// wouldn't like others to pay the penalty for something they don't need.
|
|
if (!enable_garbage_collected_sstable_writer() && use_interposer_consumer()) {
|
|
return consume_without_gc_writer(now);
|
|
}
|
|
auto consumer = make_interposer_consumer([this, now] (flat_mutation_reader_v2 reader) mutable
|
|
{
|
|
return seastar::async([this, reader = std::move(reader), now] () mutable {
|
|
auto close_reader = deferred_close(reader);
|
|
|
|
if (enable_garbage_collected_sstable_writer()) {
|
|
using compact_mutations = compact_for_compaction_v2<compacted_fragments_writer, compacted_fragments_writer>;
|
|
auto cfc = compact_mutations(*schema(), now,
|
|
max_purgeable_func(),
|
|
_table_s.get_tombstone_gc_state(),
|
|
get_compacted_fragments_writer(),
|
|
get_gc_compacted_fragments_writer());
|
|
|
|
reader.consume_in_thread(std::move(cfc));
|
|
return;
|
|
}
|
|
using compact_mutations = compact_for_compaction_v2<compacted_fragments_writer, noop_compacted_fragments_consumer>;
|
|
auto cfc = compact_mutations(*schema(), now,
|
|
max_purgeable_func(),
|
|
_table_s.get_tombstone_gc_state(),
|
|
get_compacted_fragments_writer(),
|
|
noop_compacted_fragments_consumer());
|
|
reader.consume_in_thread(std::move(cfc));
|
|
});
|
|
});
|
|
return consumer(setup_sstable_reader());
|
|
}
|
|
|
|
virtual reader_consumer_v2 make_interposer_consumer(reader_consumer_v2 end_consumer) {
|
|
return _table_s.get_compaction_strategy().make_interposer_consumer(_ms_metadata, std::move(end_consumer));
|
|
}
|
|
|
|
virtual bool use_interposer_consumer() const {
|
|
return _table_s.get_compaction_strategy().use_interposer_consumer();
|
|
}
|
|
protected:
|
|
virtual compaction_result finish(std::chrono::time_point<db_clock> started_at, std::chrono::time_point<db_clock> ended_at) {
|
|
compaction_result ret {
|
|
.new_sstables = std::move(_all_new_sstables),
|
|
.stats {
|
|
.ended_at = ended_at,
|
|
.start_size = _start_size,
|
|
.end_size = _end_size,
|
|
.bloom_filter_checks = _bloom_filter_checks,
|
|
},
|
|
};
|
|
|
|
auto ratio = double(_end_size) / double(_start_size);
|
|
auto duration = std::chrono::duration<float>(ended_at - started_at);
|
|
// Don't report NaN or negative number.
|
|
|
|
on_end_of_compaction();
|
|
|
|
formatted_sstables_list new_sstables_msg(ret.new_sstables, false);
|
|
|
|
// FIXME: there is some missing information in the log message below.
|
|
// look at CompactionTask::runMayThrow() in origin for reference.
|
|
// - add support to merge summary (message: Partition merge counts were {%s}.).
|
|
// - there is no easy way, currently, to know the exact number of total partitions.
|
|
// By the time being, using estimated key count.
|
|
log_info("{} {} sstables to {}. {} to {} (~{}% of original) in {}ms = {}. ~{} total partitions merged to {}.",
|
|
report_finish_desc(),
|
|
_input_sstable_generations.size(), new_sstables_msg, utils::pretty_printed_data_size(_start_size), utils::pretty_printed_data_size(_end_size), int(ratio * 100),
|
|
std::chrono::duration_cast<std::chrono::milliseconds>(duration).count(), utils::pretty_printed_throughput(_end_size, duration),
|
|
_cdata.total_partitions, _cdata.total_keys_written);
|
|
|
|
return ret;
|
|
}
|
|
private:
|
|
void on_interrupt(std::exception_ptr ex) {
|
|
log_info("{} of {} sstables interrupted due to: {}", report_start_desc(), _input_sstable_generations.size(), ex);
|
|
delete_sstables_for_interrupted_compaction();
|
|
}
|
|
|
|
virtual std::string_view report_start_desc() const = 0;
|
|
virtual std::string_view report_finish_desc() const = 0;
|
|
|
|
std::function<api::timestamp_type(const dht::decorated_key&)> max_purgeable_func() {
|
|
if (!tombstone_expiration_enabled()) {
|
|
return [] (const dht::decorated_key& dk) {
|
|
return api::min_timestamp;
|
|
};
|
|
}
|
|
return [this] (const dht::decorated_key& dk) {
|
|
return get_max_purgeable_timestamp(_table_s, *_selector, _compacting_for_max_purgeable_func, dk, _bloom_filter_checks);
|
|
};
|
|
}
|
|
|
|
virtual void on_new_partition() {}
|
|
|
|
virtual void on_end_of_compaction() {};
|
|
|
|
// create a writer based on decorated key.
|
|
virtual compaction_writer create_compaction_writer(const dht::decorated_key& dk) = 0;
|
|
// stop current writer
|
|
virtual void stop_sstable_writer(compaction_writer* writer) = 0;
|
|
|
|
compacted_fragments_writer get_compacted_fragments_writer() {
|
|
return compacted_fragments_writer(*this,
|
|
[this] (const dht::decorated_key& dk) { return create_compaction_writer(dk); },
|
|
[this] (compaction_writer* cw) { stop_sstable_writer(cw); });
|
|
}
|
|
|
|
const schema_ptr& schema() const {
|
|
return _schema;
|
|
}
|
|
|
|
void delete_sstables_for_interrupted_compaction() {
|
|
// Delete either partially or fully written sstables of a compaction that
|
|
// was either stopped abruptly (e.g. out of disk space) or deliberately
|
|
// (e.g. nodetool stop COMPACTION).
|
|
for (auto& sst : boost::range::join(_new_partial_sstables, _new_unused_sstables)) {
|
|
log_debug("Deleting sstable {} of interrupted compaction for {}.{}", sst->get_filename(), _schema->ks_name(), _schema->cf_name());
|
|
sst->mark_for_deletion();
|
|
}
|
|
}
|
|
protected:
|
|
template <typename... Args>
|
|
void log(log_level level, std::string_view fmt, const Args&... args) const {
|
|
if (clogger.is_enabled(level)) {
|
|
auto msg = fmt::format(fmt::runtime(fmt), args...);
|
|
clogger.log(level, "[{} {}.{} {}] {}", _type, _schema->ks_name(), _schema->cf_name(), _cdata.compaction_uuid, msg);
|
|
}
|
|
}
|
|
|
|
template <typename... Args>
|
|
void log_error(std::string_view fmt, Args&&... args) const {
|
|
log(log_level::error, std::move(fmt), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void log_warning(std::string_view fmt, Args&&... args) const {
|
|
log(log_level::warn, std::move(fmt), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void log_info(std::string_view fmt, Args&&... args) const {
|
|
log(log_level::info, std::move(fmt), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void log_debug(std::string_view fmt, Args&&... args) const {
|
|
log(log_level::debug, std::move(fmt), std::forward<Args>(args)...);
|
|
}
|
|
|
|
template <typename... Args>
|
|
void log_trace(std::string_view fmt, Args&&... args) const {
|
|
log(log_level::trace, std::move(fmt), std::forward<Args>(args)...);
|
|
}
|
|
public:
|
|
static future<compaction_result> run(std::unique_ptr<compaction> c);
|
|
|
|
friend class compacted_fragments_writer;
|
|
};
|
|
|
|
compacted_fragments_writer::compacted_fragments_writer(compacted_fragments_writer&& other)
|
|
: _c(other._c)
|
|
, _compaction_writer(std::move(other._compaction_writer))
|
|
, _create_compaction_writer(std::move(other._create_compaction_writer))
|
|
, _stop_compaction_writer(std::move(other._stop_compaction_writer)) {
|
|
if (std::exchange(other._stop_request_observer, std::nullopt)) {
|
|
_stop_request_observer = make_stop_request_observer(_c._stop_request_observable);
|
|
}
|
|
}
|
|
|
|
void compacted_fragments_writer::maybe_abort_compaction() {
|
|
if (_c._cdata.is_stop_requested()) [[unlikely]] {
|
|
// Compaction manager will catch this exception and re-schedule the compaction.
|
|
throw compaction_stopped_exception(_c._schema->ks_name(), _c._schema->cf_name(), _c._cdata.stop_requested);
|
|
}
|
|
}
|
|
|
|
void compacted_fragments_writer::stop_current_writer() {
|
|
// stop sstable writer being currently used.
|
|
_stop_compaction_writer(&*_compaction_writer);
|
|
_compaction_writer = std::nullopt;
|
|
}
|
|
|
|
bool compacted_fragments_writer::can_split_large_partition() const {
|
|
return _c._can_split_large_partition;
|
|
}
|
|
|
|
void compacted_fragments_writer::track_last_position(position_in_partition_view pos) {
|
|
if (can_split_large_partition()) {
|
|
_current_partition.last_pos = pos;
|
|
}
|
|
}
|
|
|
|
void compacted_fragments_writer::split_large_partition() {
|
|
// Closes the active range tombstone if needed, before emitting partition end.
|
|
// after_key(last_pos) is used for both closing and re-opening the active tombstone, which
|
|
// will result in current fragment storing an inclusive end bound for last pos, and the
|
|
// next fragment storing an exclusive start bound for last pos. This is very important
|
|
// for not losing information on the range tombstone.
|
|
auto after_last_pos = position_in_partition::after_key(*_c.schema(), _current_partition.last_pos.key());
|
|
if (_current_partition.current_emitted_tombstone) {
|
|
auto rtc = range_tombstone_change(after_last_pos, tombstone{});
|
|
_c.log_debug("Closing active tombstone {} with {} for partition {}", _current_partition.current_emitted_tombstone, rtc, *_current_partition.dk);
|
|
_compaction_writer->writer.consume(std::move(rtc));
|
|
}
|
|
_c.log_debug("Splitting large partition {} in order to respect SSTable size limit of {}", *_current_partition.dk, utils::pretty_printed_data_size(_c._max_sstable_size));
|
|
// Close partition in current writer, and open it again in a new writer.
|
|
do_consume_end_of_partition();
|
|
stop_current_writer();
|
|
do_consume_new_partition(*_current_partition.dk);
|
|
// Replicate partition tombstone to every fragment, allowing the SSTable run reader
|
|
// to open a single fragment during the read.
|
|
if (_current_partition.tombstone) {
|
|
consume(_current_partition.tombstone);
|
|
}
|
|
if (_current_partition.current_emitted_tombstone) {
|
|
_compaction_writer->writer.consume(range_tombstone_change(after_last_pos, _current_partition.current_emitted_tombstone));
|
|
}
|
|
_current_partition.is_splitting_partition = false;
|
|
}
|
|
|
|
void compacted_fragments_writer::do_consume_new_partition(const dht::decorated_key& dk) {
|
|
maybe_abort_compaction();
|
|
if (!_compaction_writer) {
|
|
_compaction_writer = _create_compaction_writer(dk);
|
|
}
|
|
|
|
_c.on_new_partition();
|
|
_compaction_writer->writer.consume_new_partition(dk);
|
|
_unclosed_partition = true;
|
|
}
|
|
|
|
stop_iteration compacted_fragments_writer::do_consume_end_of_partition() {
|
|
_unclosed_partition = false;
|
|
return _compaction_writer->writer.consume_end_of_partition();
|
|
}
|
|
|
|
void compacted_fragments_writer::consume_new_partition(const dht::decorated_key& dk) {
|
|
_current_partition = {
|
|
.dk = dk,
|
|
.tombstone = tombstone(),
|
|
.current_emitted_tombstone = tombstone(),
|
|
.last_pos = position_in_partition::for_partition_start(),
|
|
.is_splitting_partition = false
|
|
};
|
|
do_consume_new_partition(dk);
|
|
_c._cdata.total_keys_written++;
|
|
}
|
|
|
|
void compacted_fragments_writer::consume(tombstone t) {
|
|
_current_partition.tombstone = t;
|
|
_compaction_writer->writer.consume(t);
|
|
}
|
|
|
|
stop_iteration compacted_fragments_writer::consume(clustering_row&& cr, row_tombstone, bool) {
|
|
maybe_abort_compaction();
|
|
if (_current_partition.is_splitting_partition) [[unlikely]] {
|
|
split_large_partition();
|
|
}
|
|
track_last_position(cr.position());
|
|
auto ret = _compaction_writer->writer.consume(std::move(cr));
|
|
if (can_split_large_partition() && ret == stop_iteration::yes) [[unlikely]] {
|
|
_current_partition.is_splitting_partition = true;
|
|
}
|
|
return stop_iteration::no;
|
|
}
|
|
|
|
stop_iteration compacted_fragments_writer::consume(range_tombstone_change&& rtc) {
|
|
maybe_abort_compaction();
|
|
_current_partition.current_emitted_tombstone = rtc.tombstone();
|
|
track_last_position(rtc.position());
|
|
return _compaction_writer->writer.consume(std::move(rtc));
|
|
}
|
|
|
|
stop_iteration compacted_fragments_writer::consume_end_of_partition() {
|
|
auto ret = do_consume_end_of_partition();
|
|
if (ret == stop_iteration::yes) {
|
|
stop_current_writer();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void compacted_fragments_writer::consume_end_of_stream() {
|
|
if (_compaction_writer) {
|
|
_stop_compaction_writer(&*_compaction_writer);
|
|
_compaction_writer = std::nullopt;
|
|
}
|
|
}
|
|
|
|
class reshape_compaction : public compaction {
|
|
public:
|
|
reshape_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata)
|
|
: compaction(table_s, std::move(descriptor), cdata) {
|
|
}
|
|
|
|
virtual sstables::sstable_set make_sstable_set_for_input() const override {
|
|
return sstables::make_partitioned_sstable_set(_schema, false);
|
|
}
|
|
|
|
flat_mutation_reader_v2 make_sstable_reader() const override {
|
|
return _compacting->make_local_shard_sstable_reader(_schema,
|
|
_permit,
|
|
query::full_partition_range,
|
|
_schema->full_slice(),
|
|
tracing::trace_state_ptr(),
|
|
::streamed_mutation::forwarding::no,
|
|
::mutation_reader::forwarding::no,
|
|
default_read_monitor_generator());
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Reshaping";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Reshaped";
|
|
}
|
|
|
|
virtual compaction_writer create_compaction_writer(const dht::decorated_key& dk) override {
|
|
auto sst = _sstable_creator(this_shard_id());
|
|
setup_new_sstable(sst);
|
|
|
|
sstable_writer_config cfg = make_sstable_writer_config(compaction_type::Reshape);
|
|
return compaction_writer{sst->get_writer(*_schema, partitions_per_sstable(), cfg, get_encoding_stats()), sst};
|
|
}
|
|
|
|
virtual void stop_sstable_writer(compaction_writer* writer) override {
|
|
if (writer) {
|
|
finish_new_sstable(writer);
|
|
}
|
|
}
|
|
};
|
|
|
|
class regular_compaction : public compaction {
|
|
// keeps track of monitors for input sstable, which are responsible for adjusting backlog as compaction progresses.
|
|
mutable compaction_read_monitor_generator _monitor_generator;
|
|
seastar::semaphore _replacer_lock = {1};
|
|
public:
|
|
regular_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata)
|
|
: compaction(table_s, std::move(descriptor), cdata)
|
|
, _monitor_generator(_table_s)
|
|
{
|
|
}
|
|
|
|
flat_mutation_reader_v2 make_sstable_reader() const override {
|
|
return _compacting->make_local_shard_sstable_reader(_schema,
|
|
_permit,
|
|
query::full_partition_range,
|
|
_schema->full_slice(),
|
|
tracing::trace_state_ptr(),
|
|
::streamed_mutation::forwarding::no,
|
|
::mutation_reader::forwarding::no,
|
|
_monitor_generator);
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Compacting";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Compacted";
|
|
}
|
|
|
|
virtual compaction_writer create_compaction_writer(const dht::decorated_key& dk) override {
|
|
auto sst = _sstable_creator(this_shard_id());
|
|
setup_new_sstable(sst);
|
|
|
|
auto monitor = std::make_unique<compaction_write_monitor>(sst, _table_s, maximum_timestamp(), _sstable_level);
|
|
sstable_writer_config cfg = make_sstable_writer_config(_type);
|
|
cfg.monitor = monitor.get();
|
|
return compaction_writer{std::move(monitor), sst->get_writer(*_schema, partitions_per_sstable(), cfg, get_encoding_stats()), sst};
|
|
}
|
|
|
|
virtual void stop_sstable_writer(compaction_writer* writer) override {
|
|
if (writer) {
|
|
finish_new_sstable(writer);
|
|
maybe_replace_exhausted_sstables_by_sst(writer->sst);
|
|
}
|
|
}
|
|
|
|
void on_new_partition() override {
|
|
update_pending_ranges();
|
|
}
|
|
|
|
virtual void on_end_of_compaction() override {
|
|
replace_remaining_exhausted_sstables();
|
|
}
|
|
private:
|
|
void maybe_replace_exhausted_sstables_by_sst(shared_sstable sst) {
|
|
// Skip earlier replacement of exhausted sstables if compaction works with only single-fragment runs,
|
|
// meaning incremental compaction is disabled for this compaction.
|
|
if (!enable_garbage_collected_sstable_writer()) {
|
|
return;
|
|
}
|
|
auto permit = seastar::get_units(_replacer_lock, 1).get0();
|
|
// Replace exhausted sstable(s), if any, by new one(s) in the column family.
|
|
auto not_exhausted = [s = _schema, &dk = sst->get_last_decorated_key()] (shared_sstable& sst) {
|
|
return sst->get_last_decorated_key().tri_compare(*s, dk) > 0;
|
|
};
|
|
auto exhausted = std::partition(_sstables.begin(), _sstables.end(), not_exhausted);
|
|
|
|
if (exhausted != _sstables.end()) {
|
|
// The goal is that exhausted sstables will be deleted as soon as possible,
|
|
// so we need to release reference to them.
|
|
std::for_each(exhausted, _sstables.end(), [this] (shared_sstable& sst) {
|
|
_compacting_for_max_purgeable_func.erase(sst);
|
|
// Fully expired sstable is not actually compacted, therefore it's not present in the compacting set.
|
|
_compacting->erase(sst);
|
|
});
|
|
// Make sure SSTable created by garbage collected writer is made available
|
|
// before exhausted SSTable is released, so to prevent data resurrection.
|
|
_stop_request_observable();
|
|
|
|
// Added Garbage collected SSTables to list of unused SSTables that will be added
|
|
// to SSTable set. GC SSTables should be added before compaction completes because
|
|
// a failure could result in data resurrection if data is not made available.
|
|
auto unused_gc_sstables = consume_unused_garbage_collected_sstables();
|
|
_new_unused_sstables.insert(_new_unused_sstables.end(), unused_gc_sstables.begin(), unused_gc_sstables.end());
|
|
|
|
auto exhausted_ssts = std::vector<shared_sstable>(exhausted, _sstables.end());
|
|
log_debug("Replacing earlier exhausted sstable(s) {} by new sstable(s) {}", formatted_sstables_list(exhausted_ssts, false), formatted_sstables_list(_new_unused_sstables, true));
|
|
_replacer(get_compaction_completion_desc(exhausted_ssts, std::move(_new_unused_sstables)));
|
|
_sstables.erase(exhausted, _sstables.end());
|
|
_monitor_generator.remove_exhausted_sstables(exhausted_ssts);
|
|
}
|
|
}
|
|
|
|
void replace_remaining_exhausted_sstables() {
|
|
if (!_sstables.empty() || !used_garbage_collected_sstables().empty()) {
|
|
std::vector<shared_sstable> old_sstables;
|
|
std::move(_sstables.begin(), _sstables.end(), std::back_inserter(old_sstables));
|
|
|
|
// Remove Garbage Collected SSTables from the SSTable set if any was previously added.
|
|
auto& used_gc_sstables = used_garbage_collected_sstables();
|
|
old_sstables.insert(old_sstables.end(), used_gc_sstables.begin(), used_gc_sstables.end());
|
|
|
|
_replacer(get_compaction_completion_desc(std::move(old_sstables), std::move(_new_unused_sstables)));
|
|
}
|
|
}
|
|
|
|
void update_pending_ranges() {
|
|
if (!_sstable_set || _sstable_set->all()->empty() || _cdata.pending_replacements.empty()) { // set can be empty for testing scenario.
|
|
return;
|
|
}
|
|
// Releases reference to sstables compacted by this compaction or another, both of which belongs
|
|
// to the same column family
|
|
for (auto& pending_replacement : _cdata.pending_replacements) {
|
|
for (auto& sst : pending_replacement.removed) {
|
|
// Set may not contain sstable to be removed because this compaction may have started
|
|
// before the creation of that sstable.
|
|
if (!_sstable_set->all()->contains(sst)) {
|
|
continue;
|
|
}
|
|
_sstable_set->erase(sst);
|
|
}
|
|
for (auto& sst : pending_replacement.added) {
|
|
_sstable_set->insert(sst);
|
|
}
|
|
}
|
|
_selector.emplace(_sstable_set->make_incremental_selector());
|
|
_cdata.pending_replacements.clear();
|
|
}
|
|
};
|
|
|
|
class cleanup_compaction final : public regular_compaction {
|
|
private:
|
|
// Called in a seastar thread
|
|
dht::partition_range_vector
|
|
get_ranges_for_invalidation(const std::vector<shared_sstable>& sstables) {
|
|
auto owned_ranges = dht::to_partition_ranges(*_owned_ranges, utils::can_yield::yes);
|
|
|
|
auto non_owned_ranges = boost::copy_range<dht::partition_range_vector>(sstables
|
|
| boost::adaptors::transformed([] (const shared_sstable& sst) {
|
|
seastar::thread::maybe_yield();
|
|
return dht::partition_range::make({sst->get_first_decorated_key(), true},
|
|
{sst->get_last_decorated_key(), true});
|
|
}));
|
|
|
|
return dht::subtract_ranges(*_schema, non_owned_ranges, std::move(owned_ranges)).get();
|
|
}
|
|
protected:
|
|
virtual compaction_completion_desc
|
|
get_compaction_completion_desc(std::vector<shared_sstable> input_sstables, std::vector<shared_sstable> output_sstables) override {
|
|
auto ranges_for_for_invalidation = get_ranges_for_invalidation(input_sstables);
|
|
return compaction_completion_desc{std::move(input_sstables), std::move(output_sstables), std::move(ranges_for_for_invalidation)};
|
|
}
|
|
|
|
public:
|
|
cleanup_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata)
|
|
{
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Cleaning";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Cleaned";
|
|
}
|
|
};
|
|
|
|
class scrub_compaction final : public regular_compaction {
|
|
public:
|
|
static void report_validation_error(compaction_type type, const ::schema& schema, sstring what, std::string_view action = "") {
|
|
clogger.error("[{} compaction {}.{}] {}{}{}", type, schema.ks_name(), schema.cf_name(), what, action.empty() ? "" : "; ", action);
|
|
}
|
|
|
|
private:
|
|
|
|
class reader : public flat_mutation_reader_v2::impl {
|
|
using skip = bool_class<class skip_tag>;
|
|
private:
|
|
compaction_type_options::scrub::mode _scrub_mode;
|
|
flat_mutation_reader_v2 _reader;
|
|
mutation_fragment_stream_validator _validator;
|
|
bool _skip_to_next_partition = false;
|
|
uint64_t& _validation_errors;
|
|
|
|
private:
|
|
void maybe_abort_scrub(std::function<void()> report_error) {
|
|
if (_scrub_mode == compaction_type_options::scrub::mode::abort) {
|
|
report_error();
|
|
throw compaction_aborted_exception(_schema->ks_name(), _schema->cf_name(), "scrub compaction found invalid data");
|
|
}
|
|
++_validation_errors;
|
|
}
|
|
|
|
void on_unexpected_partition_start(const mutation_fragment_v2& ps, sstring error) {
|
|
auto report_fn = [this, error] (std::string_view action = "") {
|
|
report_validation_error(compaction_type::Scrub, *_schema, error, action);
|
|
};
|
|
maybe_abort_scrub(report_fn);
|
|
report_fn("Rectifying by adding assumed missing partition-end");
|
|
|
|
auto pe = mutation_fragment_v2(*_schema, _permit, partition_end{});
|
|
if (!_validator(pe)) {
|
|
throw compaction_aborted_exception(
|
|
_schema->ks_name(),
|
|
_schema->cf_name(),
|
|
"scrub compaction failed to rectify unexpected partition-start, validator rejects the injected partition-end");
|
|
}
|
|
push_mutation_fragment(std::move(pe));
|
|
|
|
if (!_validator(ps)) {
|
|
throw compaction_aborted_exception(
|
|
_schema->ks_name(),
|
|
_schema->cf_name(),
|
|
"scrub compaction failed to rectify unexpected partition-start, validator rejects it even after the injected partition-end");
|
|
}
|
|
}
|
|
|
|
skip on_invalid_partition(const dht::decorated_key& new_key, sstring error) {
|
|
auto report_fn = [this, error] (std::string_view action = "") {
|
|
report_validation_error(compaction_type::Scrub, *_schema, error, action);
|
|
};
|
|
maybe_abort_scrub(report_fn);
|
|
if (_scrub_mode == compaction_type_options::scrub::mode::segregate) {
|
|
report_fn("Detected");
|
|
_validator.reset(new_key);
|
|
// Let the segregating interposer consumer handle this.
|
|
return skip::no;
|
|
}
|
|
report_fn("Skipping");
|
|
_skip_to_next_partition = true;
|
|
return skip::yes;
|
|
}
|
|
|
|
skip on_invalid_mutation_fragment(const mutation_fragment_v2& mf, sstring error) {
|
|
auto report_fn = [this, error] (std::string_view action = "") {
|
|
report_validation_error(compaction_type::Scrub, *_schema, error, action);
|
|
};
|
|
maybe_abort_scrub(report_fn);
|
|
|
|
const auto& key = _validator.previous_partition_key();
|
|
|
|
if (_validator.current_tombstone()) {
|
|
throw compaction_aborted_exception(
|
|
_schema->ks_name(),
|
|
_schema->cf_name(),
|
|
"scrub compaction cannot handle invalid fragments with an active range tombstone change");
|
|
}
|
|
|
|
// If the unexpected fragment is a partition end, we just drop it.
|
|
// The only case a partition end is invalid is when it comes after
|
|
// another partition end, and we can just drop it in that case.
|
|
if (!mf.is_end_of_partition() && _scrub_mode == compaction_type_options::scrub::mode::segregate) {
|
|
report_fn("Injecting partition start/end to segregate out-of-order fragment");
|
|
push_mutation_fragment(*_schema, _permit, partition_end{});
|
|
|
|
// We loose the partition tombstone if any, but it will be
|
|
// picked up when compaction merges these partitions back.
|
|
push_mutation_fragment(mutation_fragment_v2(*_schema, _permit, partition_start(key, {})));
|
|
|
|
_validator.reset(mf);
|
|
|
|
// Let the segregating interposer consumer handle this.
|
|
return skip::no;
|
|
}
|
|
|
|
report_fn("Skipping");
|
|
|
|
return skip::yes;
|
|
}
|
|
|
|
void on_invalid_end_of_stream(sstring error) {
|
|
auto report_fn = [this, error] (std::string_view action = "") {
|
|
report_validation_error(compaction_type::Scrub, *_schema, error, action);
|
|
};
|
|
maybe_abort_scrub(report_fn);
|
|
// Handle missing partition_end
|
|
push_mutation_fragment(mutation_fragment_v2(*_schema, _permit, partition_end{}));
|
|
report_fn("Rectifying by adding missing partition-end to the end of the stream");
|
|
}
|
|
|
|
void fill_buffer_from_underlying() {
|
|
utils::get_local_injector().inject("rest_api_keyspace_scrub_abort", [] { throw compaction_aborted_exception("", "", "scrub compaction found invalid data"); });
|
|
while (!_reader.is_buffer_empty() && !is_buffer_full()) {
|
|
auto mf = _reader.pop_mutation_fragment();
|
|
if (mf.is_partition_start()) {
|
|
// First check that fragment kind monotonicity stands.
|
|
// When skipping to another partition the fragment
|
|
// monotonicity of the partition-start doesn't have to be
|
|
// and shouldn't be verified. We know the last fragment the
|
|
// validator saw is a partition-start, passing it another one
|
|
// will confuse it.
|
|
if (!_skip_to_next_partition) {
|
|
if (auto res = _validator(mf); !res) {
|
|
on_unexpected_partition_start(mf, res.what());
|
|
}
|
|
// Continue processing this partition start.
|
|
}
|
|
_skip_to_next_partition = false;
|
|
// Then check that the partition monotonicity stands.
|
|
const auto& dk = mf.as_partition_start().key();
|
|
if (auto res = _validator(dk); !res) {
|
|
if (on_invalid_partition(dk, res.what()) == skip::yes) {
|
|
continue;
|
|
}
|
|
}
|
|
} else if (_skip_to_next_partition) {
|
|
continue;
|
|
} else {
|
|
if (auto res = _validator(mf); !res) {
|
|
if (on_invalid_mutation_fragment(mf, res.what()) == skip::yes) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
push_mutation_fragment(std::move(mf));
|
|
}
|
|
|
|
_end_of_stream = _reader.is_end_of_stream() && _reader.is_buffer_empty();
|
|
|
|
if (_end_of_stream) {
|
|
if (auto res = _validator.on_end_of_stream(); !res) {
|
|
on_invalid_end_of_stream(res.what());
|
|
}
|
|
}
|
|
}
|
|
|
|
public:
|
|
reader(flat_mutation_reader_v2 underlying, compaction_type_options::scrub::mode scrub_mode, uint64_t& validation_errors)
|
|
: impl(underlying.schema(), underlying.permit())
|
|
, _scrub_mode(scrub_mode)
|
|
, _reader(std::move(underlying))
|
|
, _validator(*_schema)
|
|
, _validation_errors(validation_errors)
|
|
{ }
|
|
virtual future<> fill_buffer() override {
|
|
if (_end_of_stream) {
|
|
return make_ready_future<>();
|
|
}
|
|
return repeat([this] {
|
|
return _reader.fill_buffer().then([this] {
|
|
fill_buffer_from_underlying();
|
|
return stop_iteration(is_buffer_full() || _end_of_stream);
|
|
});
|
|
}).handle_exception([this] (std::exception_ptr e) {
|
|
try {
|
|
std::rethrow_exception(std::move(e));
|
|
} catch (const compaction_job_exception&) {
|
|
// Propagate these unchanged.
|
|
throw;
|
|
} catch (const storage_io_error&) {
|
|
// Propagate these unchanged.
|
|
throw;
|
|
} catch (...) {
|
|
// We don't want failed scrubs to be retried.
|
|
throw compaction_aborted_exception(
|
|
_schema->ks_name(),
|
|
_schema->cf_name(),
|
|
format("scrub compaction failed due to unrecoverable error: {}", std::current_exception()));
|
|
}
|
|
});
|
|
}
|
|
virtual future<> next_partition() override {
|
|
return make_exception_future<>(make_backtraced_exception_ptr<std::bad_function_call>());
|
|
}
|
|
virtual future<> fast_forward_to(const dht::partition_range& pr) override {
|
|
return make_exception_future<>(make_backtraced_exception_ptr<std::bad_function_call>());
|
|
}
|
|
virtual future<> fast_forward_to(position_range pr) override {
|
|
return make_exception_future<>(make_backtraced_exception_ptr<std::bad_function_call>());
|
|
}
|
|
virtual future<> close() noexcept override {
|
|
return _reader.close();
|
|
}
|
|
};
|
|
|
|
private:
|
|
compaction_type_options::scrub _options;
|
|
std::string _scrub_start_description;
|
|
mutable std::string _scrub_finish_description;
|
|
uint64_t _bucket_count = 0;
|
|
mutable uint64_t _validation_errors = 0;
|
|
|
|
public:
|
|
scrub_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_type_options::scrub options)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata)
|
|
, _options(options)
|
|
, _scrub_start_description(fmt::format("Scrubbing in {} mode", _options.operation_mode))
|
|
, _scrub_finish_description(fmt::format("Finished scrubbing in {} mode", _options.operation_mode)) {
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return _scrub_start_description;
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
if (_options.operation_mode == compaction_type_options::scrub::mode::segregate) {
|
|
_scrub_finish_description = fmt::format("Finished scrubbing in {} mode{}", _options.operation_mode, _bucket_count ? fmt::format(" (segregated input into {} bucket(s))", _bucket_count) : "");
|
|
}
|
|
return _scrub_finish_description;
|
|
}
|
|
|
|
flat_mutation_reader_v2 make_sstable_reader() const override {
|
|
auto crawling_reader = _compacting->make_crawling_reader(_schema, _permit, nullptr);
|
|
return make_flat_mutation_reader_v2<reader>(std::move(crawling_reader), _options.operation_mode, _validation_errors);
|
|
}
|
|
|
|
uint64_t partitions_per_sstable() const override {
|
|
const auto original_estimate = compaction::partitions_per_sstable();
|
|
if (_bucket_count <= 1) {
|
|
return original_estimate;
|
|
} else {
|
|
const auto shift = std::min(uint64_t(63), _bucket_count - 1);
|
|
return std::max(uint64_t(1), original_estimate >> shift);
|
|
}
|
|
}
|
|
|
|
reader_consumer_v2 make_interposer_consumer(reader_consumer_v2 end_consumer) override {
|
|
if (!use_interposer_consumer()) {
|
|
return end_consumer;
|
|
}
|
|
return [this, end_consumer = std::move(end_consumer)] (flat_mutation_reader_v2 reader) mutable -> future<> {
|
|
auto cfg = mutation_writer::segregate_config{memory::stats().total_memory() / 10};
|
|
return mutation_writer::segregate_by_partition(std::move(reader), cfg,
|
|
[consumer = std::move(end_consumer), this] (flat_mutation_reader_v2 rd) {
|
|
++_bucket_count;
|
|
return consumer(std::move(rd));
|
|
});
|
|
};
|
|
}
|
|
|
|
bool use_interposer_consumer() const override {
|
|
return _options.operation_mode == compaction_type_options::scrub::mode::segregate;
|
|
}
|
|
|
|
compaction_result finish(std::chrono::time_point<db_clock> started_at, std::chrono::time_point<db_clock> ended_at) override {
|
|
auto ret = compaction::finish(started_at, ended_at);
|
|
ret.stats.validation_errors = _validation_errors;
|
|
return ret;
|
|
}
|
|
|
|
friend flat_mutation_reader_v2 make_scrubbing_reader(flat_mutation_reader_v2 rd, compaction_type_options::scrub::mode scrub_mode, uint64_t& validation_errors);
|
|
};
|
|
|
|
flat_mutation_reader_v2 make_scrubbing_reader(flat_mutation_reader_v2 rd, compaction_type_options::scrub::mode scrub_mode, uint64_t& validation_errors) {
|
|
return make_flat_mutation_reader_v2<scrub_compaction::reader>(std::move(rd), scrub_mode, validation_errors);
|
|
}
|
|
|
|
class resharding_compaction final : public compaction {
|
|
// Partition count estimation for a shard S:
|
|
//
|
|
// TE, the total estimated partition count for a shard S, is defined as
|
|
// TE = Sum(i = 0...N) { Ei / Si }.
|
|
//
|
|
// where i is an input sstable that belongs to shard S,
|
|
// Ei is the estimated partition count for sstable i,
|
|
// Si is the total number of shards that own sstable i.
|
|
//
|
|
struct estimated_values {
|
|
uint64_t estimated_size = 0;
|
|
uint64_t estimated_partitions = 0;
|
|
};
|
|
std::vector<estimated_values> _estimation_per_shard;
|
|
std::vector<run_id> _run_identifiers;
|
|
private:
|
|
// return estimated partitions per sstable for a given shard
|
|
uint64_t partitions_per_sstable(shard_id s) const {
|
|
uint64_t estimated_sstables = std::max(uint64_t(1), uint64_t(ceil(double(_estimation_per_shard[s].estimated_size) / _max_sstable_size)));
|
|
return std::min(uint64_t(ceil(double(_estimation_per_shard[s].estimated_partitions) / estimated_sstables)),
|
|
_table_s.get_compaction_strategy().adjust_partition_estimate(_ms_metadata, _estimation_per_shard[s].estimated_partitions));
|
|
}
|
|
public:
|
|
resharding_compaction(table_state& table_s, sstables::compaction_descriptor descriptor, compaction_data& cdata)
|
|
: compaction(table_s, std::move(descriptor), cdata)
|
|
, _estimation_per_shard(smp::count)
|
|
, _run_identifiers(smp::count)
|
|
{
|
|
for (auto& sst : _sstables) {
|
|
const auto& shards = sst->get_shards_for_this_sstable();
|
|
auto size = sst->bytes_on_disk();
|
|
auto estimated_partitions = sst->get_estimated_key_count();
|
|
for (auto& s : shards) {
|
|
_estimation_per_shard[s].estimated_size += std::max(uint64_t(1), uint64_t(ceil(double(size) / shards.size())));
|
|
_estimation_per_shard[s].estimated_partitions += std::max(uint64_t(1), uint64_t(ceil(double(estimated_partitions) / shards.size())));
|
|
}
|
|
}
|
|
for (auto i : boost::irange(0u, smp::count)) {
|
|
_run_identifiers[i] = run_id::create_random_id();
|
|
}
|
|
}
|
|
|
|
~resharding_compaction() { }
|
|
|
|
// Use reader that makes sure no non-local mutation will not be filtered out.
|
|
flat_mutation_reader_v2 make_sstable_reader() const override {
|
|
return _compacting->make_range_sstable_reader(_schema,
|
|
_permit,
|
|
query::full_partition_range,
|
|
_schema->full_slice(),
|
|
nullptr,
|
|
::streamed_mutation::forwarding::no,
|
|
::mutation_reader::forwarding::no);
|
|
|
|
}
|
|
|
|
reader_consumer_v2 make_interposer_consumer(reader_consumer_v2 end_consumer) override {
|
|
return [end_consumer = std::move(end_consumer)] (flat_mutation_reader_v2 reader) mutable -> future<> {
|
|
return mutation_writer::segregate_by_shard(std::move(reader), std::move(end_consumer));
|
|
};
|
|
}
|
|
|
|
bool use_interposer_consumer() const override {
|
|
return true;
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Resharding";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Resharded";
|
|
}
|
|
|
|
compaction_writer create_compaction_writer(const dht::decorated_key& dk) override {
|
|
auto shard = _sharder->shard_of(dk.token());
|
|
auto sst = _sstable_creator(shard);
|
|
setup_new_sstable(sst);
|
|
|
|
auto cfg = make_sstable_writer_config(compaction_type::Reshard);
|
|
// sstables generated for a given shard will share the same run identifier.
|
|
cfg.run_identifier = _run_identifiers.at(shard);
|
|
return compaction_writer{sst->get_writer(*_schema, partitions_per_sstable(shard), cfg, get_encoding_stats(), shard), sst};
|
|
}
|
|
|
|
void stop_sstable_writer(compaction_writer* writer) override {
|
|
if (writer) {
|
|
finish_new_sstable(writer);
|
|
}
|
|
}
|
|
};
|
|
|
|
future<compaction_result> compaction::run(std::unique_ptr<compaction> c) {
|
|
return seastar::async([c = std::move(c)] () mutable {
|
|
c->setup().get();
|
|
auto consumer = c->consume();
|
|
|
|
auto start_time = db_clock::now();
|
|
try {
|
|
consumer.get();
|
|
} catch (...) {
|
|
c->on_interrupt(std::current_exception());
|
|
c = nullptr; // make sure writers are stopped while running in thread context. This is because of calls to file.close().get();
|
|
throw;
|
|
}
|
|
|
|
return c->finish(std::move(start_time), db_clock::now());
|
|
});
|
|
}
|
|
|
|
compaction_type compaction_type_options::type() const {
|
|
// Maps options_variant indexes to the corresponding compaction_type member.
|
|
static const compaction_type index_to_type[] = {
|
|
compaction_type::Compaction,
|
|
compaction_type::Cleanup,
|
|
compaction_type::Upgrade,
|
|
compaction_type::Scrub,
|
|
compaction_type::Reshard,
|
|
compaction_type::Reshape,
|
|
};
|
|
static_assert(std::variant_size_v<compaction_type_options::options_variant> == std::size(index_to_type));
|
|
return index_to_type[_options.index()];
|
|
}
|
|
|
|
static std::unique_ptr<compaction> make_compaction(table_state& table_s, sstables::compaction_descriptor descriptor, compaction_data& cdata) {
|
|
struct {
|
|
table_state& table_s;
|
|
sstables::compaction_descriptor&& descriptor;
|
|
compaction_data& cdata;
|
|
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::reshape) {
|
|
return std::make_unique<reshape_compaction>(table_s, std::move(descriptor), cdata);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::reshard) {
|
|
return std::make_unique<resharding_compaction>(table_s, std::move(descriptor), cdata);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::regular) {
|
|
return std::make_unique<regular_compaction>(table_s, std::move(descriptor), cdata);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::cleanup) {
|
|
return std::make_unique<cleanup_compaction>(table_s, std::move(descriptor), cdata);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::upgrade) {
|
|
return std::make_unique<cleanup_compaction>(table_s, std::move(descriptor), cdata);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::scrub scrub_options) {
|
|
return std::make_unique<scrub_compaction>(table_s, std::move(descriptor), cdata, scrub_options);
|
|
}
|
|
} visitor_factory{table_s, std::move(descriptor), cdata};
|
|
|
|
return descriptor.options.visit(visitor_factory);
|
|
}
|
|
|
|
static future<compaction_result> scrub_sstables_validate_mode(sstables::compaction_descriptor descriptor, compaction_data& cdata, table_state& table_s) {
|
|
auto schema = table_s.schema();
|
|
auto permit = table_s.make_compaction_reader_permit();
|
|
|
|
uint64_t validation_errors = 0;
|
|
|
|
for (const auto& sst : descriptor.sstables) {
|
|
clogger.info("Scrubbing in validate mode {}", sst->get_filename());
|
|
|
|
validation_errors += co_await sst->validate(permit, cdata.abort, [&schema] (sstring what) {
|
|
scrub_compaction::report_validation_error(compaction_type::Scrub, *schema, what);
|
|
});
|
|
// Did validation actually finish because aborted?
|
|
if (cdata.is_stop_requested()) {
|
|
// Compaction manager will catch this exception and re-schedule the compaction.
|
|
throw compaction_stopped_exception(schema->ks_name(), schema->cf_name(), cdata.stop_requested);
|
|
}
|
|
|
|
clogger.info("Finished scrubbing in validate mode {} - sstable is {}", sst->get_filename(), validation_errors == 0 ? "valid" : "invalid");
|
|
}
|
|
|
|
if (validation_errors != 0) {
|
|
for (auto& sst : descriptor.sstables) {
|
|
co_await sst->change_state(sstables::quarantine_dir);
|
|
}
|
|
}
|
|
|
|
co_return compaction_result {
|
|
.new_sstables = {},
|
|
.stats = {
|
|
.ended_at = db_clock::now(),
|
|
.validation_errors = validation_errors,
|
|
},
|
|
};
|
|
}
|
|
|
|
future<compaction_result>
|
|
compact_sstables(sstables::compaction_descriptor descriptor, compaction_data& cdata, table_state& table_s) {
|
|
if (descriptor.sstables.empty()) {
|
|
return make_exception_future<compaction_result>(std::runtime_error(format("Called {} compaction with empty set on behalf of {}.{}",
|
|
compaction_name(descriptor.options.type()), table_s.schema()->ks_name(), table_s.schema()->cf_name())));
|
|
}
|
|
if (descriptor.options.type() == compaction_type::Scrub
|
|
&& std::get<compaction_type_options::scrub>(descriptor.options.options()).operation_mode == compaction_type_options::scrub::mode::validate) {
|
|
// Bypass the usual compaction machinery for dry-mode scrub
|
|
return scrub_sstables_validate_mode(std::move(descriptor), cdata, table_s);
|
|
}
|
|
return compaction::run(make_compaction(table_s, std::move(descriptor), cdata));
|
|
}
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std::unordered_set<sstables::shared_sstable>
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get_fully_expired_sstables(const table_state& table_s, const std::vector<sstables::shared_sstable>& compacting, gc_clock::time_point compaction_time) {
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clogger.debug("Checking droppable sstables in {}.{}", table_s.schema()->ks_name(), table_s.schema()->cf_name());
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if (compacting.empty()) {
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return {};
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}
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std::unordered_set<sstables::shared_sstable> candidates;
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auto uncompacting_sstables = get_uncompacting_sstables(table_s, compacting);
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// Get list of uncompacting sstables that overlap the ones being compacted.
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std::vector<sstables::shared_sstable> overlapping = leveled_manifest::overlapping(*table_s.schema(), compacting, uncompacting_sstables);
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int64_t min_timestamp = std::numeric_limits<int64_t>::max();
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for (auto& sstable : overlapping) {
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auto gc_before = sstable->get_gc_before_for_fully_expire(compaction_time, table_s.get_tombstone_gc_state());
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if (sstable->get_max_local_deletion_time() >= gc_before) {
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min_timestamp = std::min(min_timestamp, sstable->get_stats_metadata().min_timestamp);
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}
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}
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auto compacted_undeleted_gens = boost::copy_range<std::unordered_set<generation_type>>(table_s.compacted_undeleted_sstables()
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| boost::adaptors::transformed(std::mem_fn(&sstables::sstable::generation)));
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auto has_undeleted_ancestor = [&compacted_undeleted_gens] (auto& candidate) {
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// Get ancestors from sstable which is empty after restart. It works for this purpose because
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// we only need to check that a sstable compacted *in this instance* hasn't an ancestor undeleted.
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// Not getting it from sstable metadata because mc format hasn't it available.
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return boost::algorithm::any_of(candidate->compaction_ancestors(), [&compacted_undeleted_gens] (const generation_type& gen) {
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return compacted_undeleted_gens.contains(gen);
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});
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};
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// SStables that do not contain live data is added to list of possibly expired sstables.
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|
for (auto& candidate : compacting) {
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auto gc_before = candidate->get_gc_before_for_fully_expire(compaction_time, table_s.get_tombstone_gc_state());
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clogger.debug("Checking if candidate of generation {} and max_deletion_time {} is expired, gc_before is {}",
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candidate->generation(), candidate->get_stats_metadata().max_local_deletion_time, gc_before);
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// A fully expired sstable which has an ancestor undeleted shouldn't be compacted because
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// expired data won't be purged because undeleted sstables are taken into account when
|
|
// calculating max purgeable timestamp, and not doing it could lead to a compaction loop.
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if (candidate->get_max_local_deletion_time() < gc_before && !has_undeleted_ancestor(candidate)) {
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clogger.debug("Adding candidate of generation {} to list of possibly expired sstables", candidate->generation());
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|
candidates.insert(candidate);
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} else {
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|
min_timestamp = std::min(min_timestamp, candidate->get_stats_metadata().min_timestamp);
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|
}
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|
}
|
|
|
|
auto it = candidates.begin();
|
|
while (it != candidates.end()) {
|
|
auto& candidate = *it;
|
|
// Remove from list any candidate that may contain a tombstone that covers older data.
|
|
if (candidate->get_stats_metadata().max_timestamp >= min_timestamp) {
|
|
it = candidates.erase(it);
|
|
} else {
|
|
clogger.debug("Dropping expired SSTable {} (maxLocalDeletionTime={})",
|
|
candidate->get_filename(), candidate->get_stats_metadata().max_local_deletion_time);
|
|
it++;
|
|
}
|
|
}
|
|
clogger.debug("Checking droppable sstables in {}.{}, candidates={}", table_s.schema()->ks_name(), table_s.schema()->cf_name(), candidates.size());
|
|
return candidates;
|
|
}
|
|
|
|
unsigned compaction_descriptor::fan_in() const {
|
|
return boost::copy_range<std::unordered_set<run_id>>(sstables | boost::adaptors::transformed(std::mem_fn(&sstables::sstable::run_identifier))).size();
|
|
}
|
|
|
|
uint64_t compaction_descriptor::sstables_size() const {
|
|
return boost::accumulate(sstables | boost::adaptors::transformed(std::mem_fn(&sstables::sstable::data_size)), uint64_t(0));
|
|
}
|
|
|
|
}
|