aa1270a00c
assert() is traditionally disabled in release builds, but not in
scylladb. This hasn't caused problems so far, but the latest abseil
release includes a commit [1] that causes a 1000 insn/op regression when
NDEBUG is not defined.
Clearly, we must move towards a build system where NDEBUG is defined in
release builds. But we can't just define it blindly without vetting
all the assert() calls, as some were written with the expectation that
they are enabled in release mode.
To solve the conundrum, change all assert() calls to a new SCYLLA_ASSERT()
macro in utils/assert.hh. This macro is always defined and is not conditional
on NDEBUG, so we can later (after vetting Seastar) enable NDEBUG in release
mode.
[1] 66ef711d68
Closes scylladb/scylladb#20006
1945 lines
89 KiB
C++
1945 lines
89 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 <seastar/core/shard_id.hh>
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#include "dht/i_partitioner.hh"
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#include "sstables/exceptions.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 "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/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/assert.hh"
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#include "utils/error_injection.hh"
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#include "utils/pretty_printers.hh"
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#include "readers/multi_range.hh"
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#include "readers/compacting.hh"
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#include "tombstone_gc.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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{ compaction_type::Split, "SPLIT" },
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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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case compaction_type::Split: return "Split";
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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::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::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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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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const api::timestamp_type compacting_max_timestamp) {
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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 = api::max_timestamp;
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auto memtable_min_timestamp = table_s.min_memtable_timestamp();
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// Use memtable timestamp if it contains data older than the sstables being compacted,
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// and if the memtable also contains the key we're calculating max purgeable timestamp for.
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// First condition helps to not penalize the common scenario where memtable only contains
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// newer data.
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if (memtable_min_timestamp <= compacting_max_timestamp && table_s.memtable_has_key(dk)) {
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timestamp = memtable_min_timestamp;
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}
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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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// There's no point in looking up the key in the sstable filter if
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// it does not contain data older than the minimum timestamp.
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if (sst->get_stats_metadata().min_timestamp >= timestamp) {
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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 = 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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SCYLLA_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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using use_backlog_tracker = bool_class<class use_backlog_tracker_tag>;
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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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use_backlog_tracker _use_backlog_tracker;
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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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if (_use_backlog_tracker) {
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_table_s.get_backlog_tracker().register_compacting_sstable(_sst, *this);
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}
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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 && _use_backlog_tracker) {
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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, use_backlog_tracker use_backlog_tracker)
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: _sst(std::move(sst)), _table_s(table_s), _use_backlog_tracker(use_backlog_tracker) { }
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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 && _use_backlog_tracker) {
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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, _use_backlog_tracker));
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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, use_backlog_tracker use_backlog_tracker = use_backlog_tracker::yes)
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: _table_s(table_s), _use_backlog_tracker(use_backlog_tracker) {}
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uint64_t compacted() const {
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return boost::accumulate(_generated_monitors | boost::adaptors::map_values | boost::adaptors::transformed([](auto& monitor) { return monitor.compacted(); }), uint64_t(0));
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}
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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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use_backlog_tracker _use_backlog_tracker;
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friend class compaction_progress_monitor;
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};
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void compaction_progress_monitor::set_generator(std::unique_ptr<read_monitor_generator> generator) {
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_generator = std::move(generator);
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}
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void compaction_progress_monitor::reset_generator() {
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if (_generator) {
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_progress = dynamic_cast<compaction_read_monitor_generator&>(*_generator).compacted();
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}
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_generator = nullptr;
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}
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uint64_t compaction_progress_monitor::get_progress() const {
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if (_generator) {
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return dynamic_cast<compaction_read_monitor_generator&>(*_generator).compacted();
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}
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return _progress;
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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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const compaction_sstable_creator_fn _sstable_creator;
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const schema_ptr _schema;
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const 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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const sstables::compaction_type _type;
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const uint64_t _max_sstable_size;
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const uint32_t _sstable_level;
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uint64_t _start_size = 0;
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uint64_t _end_size = 0;
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// fully expired files, which are skipped, aren't taken into account.
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uint64_t _compacting_data_file_size = 0;
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api::timestamp_type _compacting_max_timestamp = api::min_timestamp;
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uint64_t _estimated_partitions = 0;
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double _estimated_droppable_tombstone_ratio = 0;
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uint64_t _bloom_filter_checks = 0;
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db::replay_position _rp;
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encoding_stats_collector _stats_collector;
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const bool _can_split_large_partition = false;
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bool _contains_multi_fragment_runs = false;
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mutation_source_metadata _ms_metadata = {};
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const compaction_sstable_replacer_fn _replacer;
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const run_id _run_identifier;
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// optional clone of sstable set to be used for expiration purposes, so it will be set if expiration is enabled.
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std::optional<sstable_set> _sstable_set;
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// used to incrementally calculate max purgeable timestamp, as we iterate through decorated keys.
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std::optional<sstable_set::incremental_selector> _selector;
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std::unordered_set<shared_sstable> _compacting_for_max_purgeable_func;
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// optional owned_ranges vector for cleanup;
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const owned_ranges_ptr _owned_ranges = {};
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// required for reshard compaction.
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const dht::sharder* _sharder = nullptr;
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const std::optional<dht::incremental_owned_ranges_checker> _owned_ranges_checker;
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// Garbage collected sstables that are sealed but were not added to SSTable set yet.
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std::vector<shared_sstable> _unused_garbage_collected_sstables;
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// Garbage collected sstables that were added to SSTable set and should be eventually removed from it.
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std::vector<shared_sstable> _used_garbage_collected_sstables;
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utils::observable<> _stop_request_observable;
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private:
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// Keeps track of monitors for input sstable.
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// If _update_backlog_tracker is set to true, monitors are responsible for adjusting backlog as compaction progresses.
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compaction_progress_monitor& _progress_monitor;
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compaction_data& init_compaction_data(compaction_data& cdata, const compaction_descriptor& descriptor) const {
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cdata.compaction_fan_in = descriptor.fan_in();
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return cdata;
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}
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// Called in a seastar thread
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dht::partition_range_vector
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get_ranges_for_invalidation(const std::vector<shared_sstable>& sstables) {
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// If owned ranges is disengaged, it means no cleanup work was done and
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// so nothing needs to be invalidated.
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if (!_owned_ranges) {
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return dht::partition_range_vector{};
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}
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auto owned_ranges = dht::to_partition_ranges(*_owned_ranges, utils::can_yield::yes);
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auto non_owned_ranges = boost::copy_range<dht::partition_range_vector>(sstables
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| boost::adaptors::transformed([] (const shared_sstable& sst) {
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seastar::thread::maybe_yield();
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return dht::partition_range::make({sst->get_first_decorated_key(), true},
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{sst->get_last_decorated_key(), true});
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}));
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return dht::subtract_ranges(*_schema, non_owned_ranges, std::move(owned_ranges)).get();
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}
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protected:
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compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_progress_monitor& progress_monitor, use_backlog_tracker use_backlog_tracker)
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: _cdata(init_compaction_data(cdata, descriptor))
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, _table_s(table_s)
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, _sstable_creator(std::move(descriptor.creator))
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, _schema(_table_s.schema())
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, _permit(_table_s.make_compaction_reader_permit())
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, _sstables(std::move(descriptor.sstables))
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, _type(descriptor.options.type())
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, _max_sstable_size(descriptor.max_sstable_bytes)
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, _sstable_level(descriptor.level)
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, _can_split_large_partition(descriptor.can_split_large_partition)
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, _replacer(std::move(descriptor.replacer))
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, _run_identifier(descriptor.run_identifier)
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, _sstable_set(std::move(descriptor.all_sstables_snapshot))
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, _selector(_sstable_set ? _sstable_set->make_incremental_selector() : std::optional<sstable_set::incremental_selector>{})
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, _compacting_for_max_purgeable_func(std::unordered_set<shared_sstable>(_sstables.begin(), _sstables.end()))
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, _owned_ranges(std::move(descriptor.owned_ranges))
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, _sharder(descriptor.sharder)
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, _owned_ranges_checker(_owned_ranges ? std::optional<dht::incremental_owned_ranges_checker>(*_owned_ranges) : std::nullopt)
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, _progress_monitor(progress_monitor)
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{
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std::unordered_set<run_id> ssts_run_ids;
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_contains_multi_fragment_runs = std::any_of(_sstables.begin(), _sstables.end(), [&ssts_run_ids] (shared_sstable& sst) {
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return !ssts_run_ids.insert(sst->run_identifier()).second;
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});
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_progress_monitor.set_generator(std::make_unique<compaction_read_monitor_generator>(_table_s, use_backlog_tracker));
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}
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read_monitor_generator& unwrap_monitor_generator() const {
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if (_progress_monitor._generator) {
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return *_progress_monitor._generator;
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}
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return default_read_monitor_generator();
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}
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virtual uint64_t partitions_per_sstable() const {
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// some tests use _max_sstable_size == 0 for force many one partition per sstable
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auto max_sstable_size = std::max<uint64_t>(_max_sstable_size, 1);
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uint64_t estimated_sstables = std::max(1UL, uint64_t(ceil(double(_compacting_data_file_size) / max_sstable_size)));
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return std::min(uint64_t(ceil(double(_estimated_partitions) / estimated_sstables)),
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_table_s.get_compaction_strategy().adjust_partition_estimate(_ms_metadata, _estimated_partitions, _schema));
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}
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void setup_new_sstable(shared_sstable& sst) {
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_all_new_sstables.push_back(sst);
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_new_partial_sstables.insert(sst);
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for (auto ancestor : _input_sstable_generations) {
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sst->add_ancestor(ancestor);
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}
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}
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void finish_new_sstable(compaction_writer* writer) {
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writer->writer.consume_end_of_stream();
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writer->sst->open_data().get();
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_end_size += writer->sst->bytes_on_disk();
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_new_unused_sstables.push_back(writer->sst);
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_new_partial_sstables.erase(writer->sst);
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}
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sstable_writer_config make_sstable_writer_config(compaction_type type) {
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auto s = compaction_name(type);
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std::transform(s.begin(), s.end(), s.begin(), [] (char c) {
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return std::tolower(c);
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});
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sstable_writer_config cfg = _table_s.configure_writer(std::move(s));
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cfg.max_sstable_size = _max_sstable_size;
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cfg.monitor = &default_write_monitor();
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cfg.run_identifier = _run_identifier;
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cfg.replay_position = _rp;
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cfg.sstable_level = _sstable_level;
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return cfg;
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}
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api::timestamp_type maximum_timestamp() const {
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auto m = std::max_element(_sstables.begin(), _sstables.end(), [] (const shared_sstable& sst1, const shared_sstable& sst2) {
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return sst1->get_stats_metadata().max_timestamp < sst2->get_stats_metadata().max_timestamp;
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});
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return (*m)->get_stats_metadata().max_timestamp;
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}
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encoding_stats get_encoding_stats() const {
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return _stats_collector.get();
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}
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compaction_completion_desc
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get_compaction_completion_desc(std::vector<shared_sstable> input_sstables, std::vector<shared_sstable> output_sstables) {
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auto ranges_for_for_invalidation = get_ranges_for_invalidation(input_sstables);
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return compaction_completion_desc{std::move(input_sstables), std::move(output_sstables), std::move(ranges_for_for_invalidation)};
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}
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// Tombstone expiration is enabled based on the presence of sstable set.
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// If it's not present, we cannot purge tombstones without the risk of resurrecting data.
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bool tombstone_expiration_enabled() const {
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return bool(_sstable_set) && _table_s.tombstone_gc_enabled();
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}
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compaction_writer create_gc_compaction_writer(run_id gc_run) const {
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auto sst = _sstable_creator(this_shard_id());
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auto monitor = std::make_unique<compaction_write_monitor>(sst, _table_s, maximum_timestamp(), _sstable_level);
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sstable_writer_config cfg = _table_s.configure_writer("garbage_collection");
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cfg.run_identifier = gc_run;
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cfg.monitor = monitor.get();
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uint64_t estimated_partitions = std::max(1UL, uint64_t(ceil(partitions_per_sstable() * _estimated_droppable_tombstone_ratio)));
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auto writer = sst->get_writer(*schema(), estimated_partitions, cfg, get_encoding_stats());
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return compaction_writer(std::move(monitor), std::move(writer), std::move(sst));
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}
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void stop_gc_compaction_writer(compaction_writer* c_writer) {
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c_writer->writer.consume_end_of_stream();
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auto sst = c_writer->sst;
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sst->open_data().get();
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_unused_garbage_collected_sstables.push_back(std::move(sst));
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}
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// Writes a temporary sstable run containing only garbage collected data.
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// Whenever regular compaction writer seals a new sstable, this writer will flush a new sstable as well,
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// right before there's an attempt to release exhausted sstables earlier.
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// Generated sstables will be temporarily added to table to make sure that a compaction crash will not
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// result in data resurrection.
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// When compaction finishes, all the temporary sstables generated here will be deleted and removed
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// from table's sstable set.
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compacted_fragments_writer get_gc_compacted_fragments_writer() {
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// because the temporary sstable run can overlap with the non-gc sstables run created by
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// get_compacted_fragments_writer(), we have to use a different run_id. the gc_run_id is
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// created here as:
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// 1. it can be shared across all sstables created by this writer
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// 2. it is optional, as gc writer is not always used
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auto gc_run = run_id::create_random_id();
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return compacted_fragments_writer(*this,
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[this, gc_run] (const dht::decorated_key&) { return create_gc_compaction_writer(gc_run); },
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[this] (compaction_writer* cw) { stop_gc_compaction_writer(cw); },
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_stop_request_observable);
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}
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// Retrieves all unused garbage collected sstables that will be subsequently added
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// to the SSTable set, and mark them as used.
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std::vector<shared_sstable> consume_unused_garbage_collected_sstables() {
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auto unused = std::exchange(_unused_garbage_collected_sstables, {});
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_used_garbage_collected_sstables.insert(_used_garbage_collected_sstables.end(), unused.begin(), unused.end());
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return unused;
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}
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const std::vector<shared_sstable>& used_garbage_collected_sstables() const {
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return _used_garbage_collected_sstables;
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}
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virtual bool enable_garbage_collected_sstable_writer() const noexcept {
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return _contains_multi_fragment_runs && _max_sstable_size != std::numeric_limits<uint64_t>::max() && bool(_replacer);
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}
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public:
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compaction& operator=(const compaction&) = delete;
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compaction(const compaction&) = delete;
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compaction(compaction&& other) = delete;
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compaction& operator=(compaction&& other) = delete;
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virtual ~compaction() {
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_progress_monitor.reset_generator();
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}
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private:
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// Default range sstable reader that will only return mutation that belongs to current shard.
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virtual mutation_reader make_sstable_reader(schema_ptr s,
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reader_permit permit,
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const dht::partition_range& range,
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const query::partition_slice& slice,
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tracing::trace_state_ptr,
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streamed_mutation::forwarding fwd,
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mutation_reader::forwarding) const = 0;
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mutation_reader setup_sstable_reader() const {
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if (!_owned_ranges_checker) {
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return make_sstable_reader(_schema,
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_permit,
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query::full_partition_range,
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_schema->full_slice(),
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tracing::trace_state_ptr(),
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::streamed_mutation::forwarding::no,
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::mutation_reader::forwarding::no);
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}
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auto source = mutation_source([this] (schema_ptr s,
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reader_permit permit,
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const dht::partition_range& range,
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const query::partition_slice& slice,
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tracing::trace_state_ptr trace_state,
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streamed_mutation::forwarding fwd,
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mutation_reader::forwarding fwd_mr) {
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log_trace("Creating sstable set reader with range {}", range);
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return make_sstable_reader(std::move(s),
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std::move(permit),
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range,
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slice,
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std::move(trace_state),
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fwd,
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fwd_mr);
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});
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auto owned_range_generator = [this] () -> std::optional<dht::partition_range> {
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auto r = _owned_ranges_checker->next_owned_range();
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if (r == nullptr) {
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return std::nullopt;
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}
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log_trace("Skipping to the next owned range {}", *r);
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return dht::to_partition_range(*r);
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};
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return make_flat_multi_range_reader(_schema, _permit, std::move(source),
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std::move(owned_range_generator),
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_schema->full_slice(),
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tracing::trace_state_ptr());
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}
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virtual sstables::sstable_set make_sstable_set_for_input() const {
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return _table_s.get_compaction_strategy().make_sstable_set(_schema);
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}
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future<> setup() {
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auto ssts = make_lw_shared<sstables::sstable_set>(make_sstable_set_for_input());
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auto fully_expired = _table_s.fully_expired_sstables(_sstables, gc_clock::now());
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min_max_tracker<api::timestamp_type> timestamp_tracker;
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double sum_of_estimated_droppable_tombstone_ratio = 0;
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_input_sstable_generations.reserve(_sstables.size());
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for (auto& sst : _sstables) {
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co_await coroutine::maybe_yield();
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auto& sst_stats = sst->get_stats_metadata();
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timestamp_tracker.update(sst_stats.min_timestamp);
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timestamp_tracker.update(sst_stats.max_timestamp);
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// Compacted sstable keeps track of its ancestors.
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_input_sstable_generations.push_back(sst->generation());
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_start_size += sst->bytes_on_disk();
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_cdata.total_partitions += sst->get_estimated_key_count();
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// Do not actually compact a sstable that is fully expired and can be safely
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// dropped without resurrecting old data.
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if (tombstone_expiration_enabled() && fully_expired.contains(sst)) {
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log_debug("Fully expired sstable {} will be dropped on compaction completion", sst->get_filename());
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continue;
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}
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_stats_collector.update(sst->get_encoding_stats_for_compaction());
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_cdata.compaction_size += sst->data_size();
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// We also capture the sstable, so we keep it alive while the read isn't done
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ssts->insert(sst);
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// FIXME: If the sstables have cardinality estimation bitmaps, use that
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|
// for a better estimate for the number of partitions in the merged
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// sstable than just adding up the lengths of individual sstables.
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_estimated_partitions += sst->get_estimated_key_count();
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sum_of_estimated_droppable_tombstone_ratio += sst->estimate_droppable_tombstone_ratio(gc_clock::now(), _table_s.get_tombstone_gc_state(), _schema);
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_compacting_data_file_size += sst->ondisk_data_size();
|
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_compacting_max_timestamp = std::max(_compacting_max_timestamp, sst->get_stats_metadata().max_timestamp);
|
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if (sst->originated_on_this_node().value_or(false) && sst_stats.position.shard_id() == this_shard_id()) {
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_rp = std::max(_rp, sst_stats.position);
|
|
}
|
|
}
|
|
log_info("{} [{}]", report_start_desc(), fmt::join(_sstables | boost::adaptors::transformed([] (auto sst) { return to_string(sst, true); }), ","));
|
|
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());
|
|
}
|
|
// _estimated_droppable_tombstone_ratio could exceed 1.0 in certain cases, so limit it to 1.0.
|
|
_estimated_droppable_tombstone_ratio = std::min(1.0, sum_of_estimated_droppable_tombstone_ratio / ssts->size());
|
|
|
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_compacting = std::move(ssts);
|
|
|
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_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] (mutation_reader reader) mutable {
|
|
return seastar::async([this, reader = std::move(reader)] () mutable {
|
|
auto close_reader = deferred_close(reader);
|
|
auto cfc = 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] (mutation_reader 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();
|
|
|
|
// 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(),
|
|
fmt::join(ret.new_sstables | boost::adaptors::transformed([] (auto sst) { return to_string(sst, false); }), ","),
|
|
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(_start_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: {}, at {}", report_start_desc(), _input_sstable_generations.size(), ex, current_backtrace());
|
|
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, _compacting_max_timestamp);
|
|
};
|
|
}
|
|
|
|
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 regular_compaction : public compaction {
|
|
seastar::semaphore _replacer_lock = {1};
|
|
public:
|
|
regular_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_progress_monitor& progress_monitor, use_backlog_tracker use_backlog_tracker = use_backlog_tracker::yes)
|
|
: compaction(table_s, std::move(descriptor), cdata, progress_monitor, use_backlog_tracker)
|
|
{
|
|
}
|
|
|
|
mutation_reader make_sstable_reader(schema_ptr s,
|
|
reader_permit permit,
|
|
const dht::partition_range& range,
|
|
const query::partition_slice& slice,
|
|
tracing::trace_state_ptr trace,
|
|
streamed_mutation::forwarding sm_fwd,
|
|
mutation_reader::forwarding mr_fwd) const override {
|
|
return _compacting->make_local_shard_sstable_reader(std::move(s),
|
|
std::move(permit),
|
|
range,
|
|
slice,
|
|
std::move(trace),
|
|
sm_fwd,
|
|
mr_fwd,
|
|
unwrap_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).get();
|
|
// 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) [{}]",
|
|
fmt::join(exhausted_ssts | boost::adaptors::transformed([] (auto sst) { return to_string(sst, false); }), ","),
|
|
fmt::join(_new_unused_sstables | boost::adaptors::transformed([] (auto sst) { return to_string(sst, true); }), ","));
|
|
_replacer(get_compaction_completion_desc(exhausted_ssts, std::move(_new_unused_sstables)));
|
|
_sstables.erase(exhausted, _sstables.end());
|
|
dynamic_cast<compaction_read_monitor_generator&>(unwrap_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() {
|
|
auto pending_replacements = std::exchange(_cdata.pending_replacements, {});
|
|
if (!_sstable_set || _sstable_set->all()->empty() || 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 : 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());
|
|
}
|
|
};
|
|
|
|
class reshape_compaction : public regular_compaction {
|
|
private:
|
|
bool has_sstable_replacer() const noexcept {
|
|
return bool(_replacer);
|
|
}
|
|
public:
|
|
reshape_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_progress_monitor& progress_monitor)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata, progress_monitor, use_backlog_tracker::no) {
|
|
}
|
|
|
|
virtual sstables::sstable_set make_sstable_set_for_input() const override {
|
|
return sstables::make_partitioned_sstable_set(_schema, false);
|
|
}
|
|
|
|
// Unconditionally enable incremental compaction if the strategy specifies a max output size, e.g. LCS.
|
|
virtual bool enable_garbage_collected_sstable_writer() const noexcept override {
|
|
return _max_sstable_size != std::numeric_limits<uint64_t>::max() && bool(_replacer);
|
|
}
|
|
|
|
mutation_reader make_sstable_reader(schema_ptr s,
|
|
reader_permit permit,
|
|
const dht::partition_range& range,
|
|
const query::partition_slice& slice,
|
|
tracing::trace_state_ptr trace,
|
|
streamed_mutation::forwarding sm_fwd,
|
|
mutation_reader::forwarding mr_fwd) const override {
|
|
return _compacting->make_local_shard_sstable_reader(std::move(s),
|
|
std::move(permit),
|
|
range,
|
|
slice,
|
|
std::move(trace),
|
|
sm_fwd,
|
|
mr_fwd,
|
|
unwrap_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) {
|
|
if (has_sstable_replacer()) {
|
|
regular_compaction::stop_sstable_writer(writer);
|
|
} else {
|
|
finish_new_sstable(writer);
|
|
}
|
|
}
|
|
}
|
|
|
|
virtual void on_end_of_compaction() override {
|
|
if (has_sstable_replacer()) {
|
|
regular_compaction::on_end_of_compaction();
|
|
}
|
|
}
|
|
};
|
|
|
|
class cleanup_compaction final : public regular_compaction {
|
|
public:
|
|
cleanup_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_progress_monitor& progress_monitor)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata, progress_monitor)
|
|
{
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Cleaning";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Cleaned";
|
|
}
|
|
};
|
|
|
|
class split_compaction final : public regular_compaction {
|
|
compaction_type_options::split _options;
|
|
public:
|
|
split_compaction(table_state& table_s, compaction_descriptor descriptor, compaction_data& cdata, compaction_type_options::split options,
|
|
compaction_progress_monitor& progress_monitor)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata, progress_monitor)
|
|
, _options(std::move(options))
|
|
{
|
|
}
|
|
|
|
reader_consumer_v2 make_interposer_consumer(reader_consumer_v2 end_consumer) override {
|
|
return [this, end_consumer = std::move(end_consumer)] (mutation_reader reader) mutable -> future<> {
|
|
return mutation_writer::segregate_by_token_group(std::move(reader),
|
|
_options.classifier,
|
|
_table_s.get_compaction_strategy().make_interposer_consumer(_ms_metadata, std::move(end_consumer)));
|
|
};
|
|
}
|
|
|
|
bool use_interposer_consumer() const override {
|
|
return true;
|
|
}
|
|
|
|
std::string_view report_start_desc() const override {
|
|
return "Splitting";
|
|
}
|
|
|
|
std::string_view report_finish_desc() const override {
|
|
return "Split";
|
|
}
|
|
};
|
|
|
|
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 mutation_reader::impl {
|
|
using skip = bool_class<class skip_tag>;
|
|
private:
|
|
compaction_type_options::scrub::mode _scrub_mode;
|
|
mutation_reader _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(mutation_reader 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, compaction_progress_monitor& progress_monitor)
|
|
: regular_compaction(table_s, std::move(descriptor), cdata, progress_monitor, use_backlog_tracker::no)
|
|
, _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;
|
|
}
|
|
|
|
mutation_reader make_sstable_reader(schema_ptr s,
|
|
reader_permit permit,
|
|
const dht::partition_range& range,
|
|
const query::partition_slice& slice,
|
|
tracing::trace_state_ptr trace,
|
|
streamed_mutation::forwarding sm_fwd,
|
|
mutation_reader::forwarding mr_fwd) const override {
|
|
if (!range.is_full()) {
|
|
on_internal_error(clogger, fmt::format("Scrub compaction in mode {} expected full partition range, but got {} instead", _options.operation_mode, range));
|
|
}
|
|
auto crawling_reader = _compacting->make_crawling_reader(std::move(s), std::move(permit), nullptr, unwrap_monitor_generator());
|
|
return make_mutation_reader<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)] (mutation_reader 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] (mutation_reader 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 mutation_reader make_scrubbing_reader(mutation_reader rd, compaction_type_options::scrub::mode scrub_mode, uint64_t& validation_errors);
|
|
};
|
|
|
|
mutation_reader make_scrubbing_reader(mutation_reader rd, compaction_type_options::scrub::mode scrub_mode, uint64_t& validation_errors) {
|
|
return make_mutation_reader<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, _schema));
|
|
}
|
|
public:
|
|
resharding_compaction(table_state& table_s, sstables::compaction_descriptor descriptor, compaction_data& cdata, compaction_progress_monitor& progress_monitor)
|
|
: compaction(table_s, std::move(descriptor), cdata, progress_monitor, use_backlog_tracker::no)
|
|
, _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.
|
|
mutation_reader make_sstable_reader(schema_ptr s,
|
|
reader_permit permit,
|
|
const dht::partition_range& range,
|
|
const query::partition_slice& slice,
|
|
tracing::trace_state_ptr trace,
|
|
streamed_mutation::forwarding sm_fwd,
|
|
mutation_reader::forwarding mr_fwd) const override {
|
|
return _compacting->make_range_sstable_reader(std::move(s),
|
|
std::move(permit),
|
|
range,
|
|
slice,
|
|
nullptr,
|
|
sm_fwd,
|
|
mr_fwd,
|
|
unwrap_monitor_generator());
|
|
|
|
}
|
|
|
|
reader_consumer_v2 make_interposer_consumer(reader_consumer_v2 end_consumer) override {
|
|
return [end_consumer = std::move(end_consumer)] (mutation_reader 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 shards = _sharder->shard_for_writes(dk.token());
|
|
if (shards.size() != 1) {
|
|
// Resharding is not supposed to run on tablets, so this case does not have to be supported.
|
|
on_internal_error(clogger, fmt::format("Got {} shards for token {} in table {}.{}", shards.size(), dk.token(), _schema->ks_name(), _schema->cf_name()));
|
|
}
|
|
auto shard = shards[0];
|
|
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,
|
|
compaction_type::Split,
|
|
};
|
|
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, compaction_progress_monitor& progress_monitor) {
|
|
struct {
|
|
table_state& table_s;
|
|
sstables::compaction_descriptor&& descriptor;
|
|
compaction_data& cdata;
|
|
compaction_progress_monitor& progress_monitor;
|
|
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::reshape) {
|
|
return std::make_unique<reshape_compaction>(table_s, std::move(descriptor), cdata, progress_monitor);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::reshard) {
|
|
return std::make_unique<resharding_compaction>(table_s, std::move(descriptor), cdata, progress_monitor);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::regular) {
|
|
return std::make_unique<regular_compaction>(table_s, std::move(descriptor), cdata, progress_monitor);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::cleanup) {
|
|
return std::make_unique<cleanup_compaction>(table_s, std::move(descriptor), cdata, progress_monitor);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::upgrade) {
|
|
return std::make_unique<cleanup_compaction>(table_s, std::move(descriptor), cdata, progress_monitor);
|
|
}
|
|
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, progress_monitor);
|
|
}
|
|
std::unique_ptr<compaction> operator()(compaction_type_options::split split_options) {
|
|
return std::make_unique<split_compaction>(table_s, std::move(descriptor), cdata, std::move(split_options), progress_monitor);
|
|
}
|
|
} visitor_factory{table_s, std::move(descriptor), cdata, progress_monitor};
|
|
|
|
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, read_monitor_generator& monitor_generator) {
|
|
auto schema = table_s.schema();
|
|
auto permit = table_s.make_compaction_reader_permit();
|
|
|
|
uint64_t validation_errors = 0;
|
|
cdata.compaction_size = boost::accumulate(descriptor.sstables | boost::adaptors::transformed([] (auto& sst) { return sst->data_size(); }), int64_t(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);
|
|
}, monitor_generator(sst));
|
|
// 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");
|
|
}
|
|
|
|
using scrub = sstables::compaction_type_options::scrub;
|
|
if (validation_errors != 0 && descriptor.options.as<scrub>().quarantine_sstables == scrub::quarantine_invalid_sstables::yes) {
|
|
for (auto& sst : descriptor.sstables) {
|
|
co_await sst->change_state(sstables::sstable_state::quarantine);
|
|
}
|
|
}
|
|
|
|
co_return compaction_result {
|
|
.new_sstables = {},
|
|
.stats = {
|
|
.ended_at = db_clock::now(),
|
|
.validation_errors = validation_errors,
|
|
},
|
|
};
|
|
}
|
|
|
|
future<compaction_result> scrub_sstables_validate_mode(sstables::compaction_descriptor descriptor, compaction_data& cdata, table_state& table_s, compaction_progress_monitor& progress_monitor) {
|
|
progress_monitor.set_generator(std::make_unique<compaction_read_monitor_generator>(table_s, use_backlog_tracker::no));
|
|
auto d = defer([&] { progress_monitor.reset_generator(); });
|
|
auto res = co_await scrub_sstables_validate_mode(descriptor, cdata, table_s, *progress_monitor._generator);
|
|
co_return res;
|
|
}
|
|
|
|
future<compaction_result>
|
|
compact_sstables(sstables::compaction_descriptor descriptor, compaction_data& cdata, table_state& table_s, compaction_progress_monitor& progress_monitor) {
|
|
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, progress_monitor);
|
|
}
|
|
return compaction::run(make_compaction(table_s, std::move(descriptor), cdata, progress_monitor));
|
|
}
|
|
|
|
std::unordered_set<sstables::shared_sstable>
|
|
get_fully_expired_sstables(const table_state& table_s, const std::vector<sstables::shared_sstable>& compacting, gc_clock::time_point compaction_time) {
|
|
clogger.debug("Checking droppable sstables in {}.{}", table_s.schema()->ks_name(), table_s.schema()->cf_name());
|
|
|
|
if (compacting.empty()) {
|
|
return {};
|
|
}
|
|
|
|
std::unordered_set<sstables::shared_sstable> candidates;
|
|
auto uncompacting_sstables = get_uncompacting_sstables(table_s, compacting);
|
|
// Get list of uncompacting sstables that overlap the ones being compacted.
|
|
std::vector<sstables::shared_sstable> overlapping = leveled_manifest::overlapping(*table_s.schema(), compacting, uncompacting_sstables);
|
|
int64_t min_timestamp = std::numeric_limits<int64_t>::max();
|
|
|
|
for (auto& sstable : overlapping) {
|
|
auto gc_before = sstable->get_gc_before_for_fully_expire(compaction_time, table_s.get_tombstone_gc_state(), table_s.schema());
|
|
if (sstable->get_max_local_deletion_time() >= gc_before) {
|
|
min_timestamp = std::min(min_timestamp, sstable->get_stats_metadata().min_timestamp);
|
|
}
|
|
}
|
|
|
|
auto compacted_undeleted_gens = boost::copy_range<std::unordered_set<generation_type>>(table_s.compacted_undeleted_sstables()
|
|
| boost::adaptors::transformed(std::mem_fn(&sstables::sstable::generation)));
|
|
auto has_undeleted_ancestor = [&compacted_undeleted_gens] (auto& candidate) {
|
|
// Get ancestors from sstable which is empty after restart. It works for this purpose because
|
|
// we only need to check that a sstable compacted *in this instance* hasn't an ancestor undeleted.
|
|
// Not getting it from sstable metadata because mc format hasn't it available.
|
|
return boost::algorithm::any_of(candidate->compaction_ancestors(), [&compacted_undeleted_gens] (const generation_type& gen) {
|
|
return compacted_undeleted_gens.contains(gen);
|
|
});
|
|
};
|
|
|
|
// SStables that do not contain live data is added to list of possibly expired sstables.
|
|
for (auto& candidate : compacting) {
|
|
auto gc_before = candidate->get_gc_before_for_fully_expire(compaction_time, table_s.get_tombstone_gc_state(), table_s.schema());
|
|
clogger.debug("Checking if candidate of generation {} and max_deletion_time {} is expired, gc_before is {}",
|
|
candidate->generation(), candidate->get_stats_metadata().max_local_deletion_time, gc_before);
|
|
// A fully expired sstable which has an ancestor undeleted shouldn't be compacted because
|
|
// 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.
|
|
if (candidate->get_max_local_deletion_time() < gc_before && !has_undeleted_ancestor(candidate)) {
|
|
clogger.debug("Adding candidate of generation {} to list of possibly expired sstables", candidate->generation());
|
|
candidates.insert(candidate);
|
|
} else {
|
|
min_timestamp = std::min(min_timestamp, candidate->get_stats_metadata().min_timestamp);
|
|
}
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
}
|
|
|
|
auto fmt::formatter<sstables::compaction_type>::format(sstables::compaction_type type, fmt::format_context& ctx) const
|
|
-> decltype(ctx.out()) {
|
|
return fmt::format_to(ctx.out(), "{}", to_string(type));
|
|
}
|
|
|
|
auto fmt::formatter<sstables::compaction_type_options::scrub::mode>::format(sstables::compaction_type_options::scrub::mode mode, fmt::format_context& ctx) const
|
|
-> decltype(ctx.out()) {
|
|
return fmt::format_to(ctx.out(), "{}", to_string(mode));
|
|
}
|
|
|
|
auto fmt::formatter<sstables::compaction_type_options::scrub::quarantine_mode>::format(sstables::compaction_type_options::scrub::quarantine_mode mode, fmt::format_context& ctx) const
|
|
-> decltype(ctx.out()) {
|
|
return fmt::format_to(ctx.out(), "{}", to_string(mode));
|
|
}
|