6737c88045
We have three semaphores for serialization of maintenance ops. 1) _rewrite_sstables_sem: for scrub, cleanup and upgrade. 2) _major_compaction_sem: for major 3) _custom_job_sem: for reshape, resharding and offstrategy scrub, cleanup and upgrade should be serialized with major, so rewrite sem should be merged into major one. offstrategy is also a maintenance op that should be serialized with others, to reduce compaction aggressiveness and space requirement. resharding is one-off operation, so can be merged there too. the same applies for reshape, which can take long and not serializing it with other maintenance activity can lead to exhaustion of resources and high space requirement. let's have a single semaphore to guarantee their serialization. deadlock isn't an issue because locks are always taken in same order. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com> Message-Id: <20211201182046.100942-1-raphaelsc@scylladb.com>
1216 lines
51 KiB
C++
1216 lines
51 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "compaction_manager.hh"
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#include "compaction_strategy.hh"
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#include "compaction_backlog_manager.hh"
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#include "sstables/sstables.hh"
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#include "sstables/sstables_manager.hh"
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#include "database.hh"
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#include <seastar/core/metrics.hh>
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#include <seastar/core/coroutine.hh>
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#include "sstables/exceptions.hh"
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#include "locator/abstract_replication_strategy.hh"
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#include "utils/fb_utilities.hh"
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#include "utils/UUID_gen.hh"
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#include <cmath>
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#include <boost/algorithm/cxx11/any_of.hpp>
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static logging::logger cmlog("compaction_manager");
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using namespace std::chrono_literals;
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class compacting_sstable_registration {
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compaction_manager* _cm;
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std::vector<sstables::shared_sstable> _compacting;
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public:
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compacting_sstable_registration(compaction_manager* cm, std::vector<sstables::shared_sstable> compacting)
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: _cm(cm)
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, _compacting(std::move(compacting))
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{
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_cm->register_compacting_sstables(_compacting);
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}
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compacting_sstable_registration& operator=(const compacting_sstable_registration&) = delete;
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compacting_sstable_registration(const compacting_sstable_registration&) = delete;
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compacting_sstable_registration& operator=(compacting_sstable_registration&& other) noexcept {
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if (this != &other) {
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this->~compacting_sstable_registration();
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new (this) compacting_sstable_registration(std::move(other));
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}
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return *this;
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}
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compacting_sstable_registration(compacting_sstable_registration&& other) noexcept
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: _cm(other._cm)
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, _compacting(std::move(other._compacting))
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{
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other._cm = nullptr;
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}
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~compacting_sstable_registration() {
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if (_cm) {
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_cm->deregister_compacting_sstables(_compacting);
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}
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}
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// Explicitly release compacting sstables
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void release_compacting(const std::vector<sstables::shared_sstable>& sstables) {
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_cm->deregister_compacting_sstables(sstables);
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for (auto& sst : sstables) {
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_compacting.erase(boost::remove(_compacting, sst), _compacting.end());
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}
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}
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};
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sstables::compaction_data compaction_manager::create_compaction_data() {
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sstables::compaction_data cdata = {};
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cdata.compaction_uuid = utils::UUID_gen::get_time_UUID();
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return cdata;
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}
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compaction_weight_registration::compaction_weight_registration(compaction_manager* cm, int weight)
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: _cm(cm)
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, _weight(weight)
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{
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_cm->register_weight(_weight);
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}
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compaction_weight_registration& compaction_weight_registration::operator=(compaction_weight_registration&& other) noexcept {
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if (this != &other) {
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this->~compaction_weight_registration();
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new (this) compaction_weight_registration(std::move(other));
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}
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return *this;
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}
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compaction_weight_registration::compaction_weight_registration(compaction_weight_registration&& other) noexcept
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: _cm(other._cm)
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, _weight(other._weight)
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{
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other._cm = nullptr;
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other._weight = 0;
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}
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compaction_weight_registration::~compaction_weight_registration() {
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if (_cm) {
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_cm->deregister_weight(_weight);
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}
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}
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void compaction_weight_registration::deregister() {
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_cm->deregister_weight(_weight);
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_cm = nullptr;
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}
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int compaction_weight_registration::weight() const {
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return _weight;
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}
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// Calculate weight of compaction job.
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static inline int calculate_weight(uint64_t total_size) {
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// At the moment, '4' is being used as log base for determining the weight
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// of a compaction job. With base of 4, what happens is that when you have
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// a 40-second compaction in progress, and a tiny 10-second compaction
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// comes along, you do them in parallel.
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// TODO: Find a possibly better log base through experimentation.
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static constexpr int WEIGHT_LOG_BASE = 4;
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// Fixed tax is added to size before taking the log, to make sure all jobs
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// smaller than the tax (i.e. 1MB) will be serialized.
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static constexpr int fixed_size_tax = 1024*1024;
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// computes the logarithm (base WEIGHT_LOG_BASE) of total_size.
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return int(std::log(total_size + fixed_size_tax) / std::log(WEIGHT_LOG_BASE));
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}
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static inline int calculate_weight(const sstables::compaction_descriptor& descriptor) {
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// Use weight 0 for compactions that are comprised solely of completely expired sstables.
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// We want these compactions to be in a separate weight class because they are very lightweight, fast and efficient.
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if (descriptor.sstables.empty() || descriptor.has_only_fully_expired) {
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return 0;
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}
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return calculate_weight(boost::accumulate(descriptor.sstables | boost::adaptors::transformed(std::mem_fn(&sstables::sstable::data_size)), uint64_t(0)));
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}
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unsigned compaction_manager::current_compaction_fan_in_threshold() const {
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if (_tasks.empty()) {
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return 0;
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}
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auto largest_fan_in = std::ranges::max(_tasks | boost::adaptors::transformed([] (auto& task) {
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return task->compaction_running ? task->compaction_data.compaction_fan_in : 0;
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}));
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// conservatively limit fan-in threshold to 32, such that tons of small sstables won't accumulate if
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// running major on a leveled table, which can even have more than one thousand files.
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return std::min(unsigned(32), largest_fan_in);
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}
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bool compaction_manager::can_register_compaction(table* t, int weight, unsigned fan_in) const {
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// Only one weight is allowed if parallel compaction is disabled.
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if (!t->get_compaction_strategy().parallel_compaction() && has_table_ongoing_compaction(t)) {
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return false;
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}
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// TODO: Maybe allow only *smaller* compactions to start? That can be done
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// by returning true only if weight is not in the set and is lower than any
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// entry in the set.
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if (_weight_tracker.contains(weight)) {
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// If reached this point, it means that there is an ongoing compaction
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// with the weight of the compaction job.
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return false;
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}
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// A compaction cannot proceed until its fan-in is greater than or equal to the current largest fan-in.
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// That's done to prevent a less efficient compaction from "diluting" a more efficient one.
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// Compactions with the same efficiency can run in parallel as long as they aren't similar sized,
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// i.e. an efficient small-sized job can proceed in parallel to an efficient big-sized one.
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if (fan_in < current_compaction_fan_in_threshold()) {
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return false;
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}
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return true;
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}
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void compaction_manager::register_weight(int weight) {
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_weight_tracker.insert(weight);
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}
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void compaction_manager::deregister_weight(int weight) {
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_weight_tracker.erase(weight);
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reevaluate_postponed_compactions();
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}
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std::vector<sstables::shared_sstable> compaction_manager::get_candidates(const table& t) {
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std::vector<sstables::shared_sstable> candidates;
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candidates.reserve(t.sstables_count());
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// prevents sstables that belongs to a partial run being generated by ongoing compaction from being
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// selected for compaction, which could potentially result in wrong behavior.
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auto partial_run_identifiers = boost::copy_range<std::unordered_set<utils::UUID>>(_tasks
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| boost::adaptors::filtered(std::mem_fn(&task::generating_output_run))
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| boost::adaptors::transformed(std::mem_fn(&task::output_run_id)));
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auto& cs = t.get_compaction_strategy();
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// Filter out sstables that are being compacted.
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for (auto& sst : t.in_strategy_sstables()) {
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if (_compacting_sstables.contains(sst)) {
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continue;
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}
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if (partial_run_identifiers.contains(sst->run_identifier())) {
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continue;
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}
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candidates.push_back(sst);
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}
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return candidates;
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}
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void compaction_manager::register_compacting_sstables(const std::vector<sstables::shared_sstable>& sstables) {
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std::unordered_set<sstables::shared_sstable> sstables_to_merge;
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sstables_to_merge.reserve(sstables.size());
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for (auto& sst : sstables) {
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sstables_to_merge.insert(sst);
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}
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// make all required allocations in advance to merge
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// so it should not throw
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_compacting_sstables.reserve(_compacting_sstables.size() + sstables.size());
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try {
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_compacting_sstables.merge(sstables_to_merge);
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} catch (...) {
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cmlog.error("Unexpected error when registering compacting SSTables: {}. Ignored...", std::current_exception());
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}
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}
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void compaction_manager::deregister_compacting_sstables(const std::vector<sstables::shared_sstable>& sstables) {
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// Remove compacted sstables from the set of compacting sstables.
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for (auto& sst : sstables) {
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_compacting_sstables.erase(sst);
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}
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}
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class user_initiated_backlog_tracker final : public compaction_backlog_tracker::impl {
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public:
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explicit user_initiated_backlog_tracker(float added_backlog, size_t available_memory) : _added_backlog(added_backlog), _available_memory(available_memory) {}
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private:
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float _added_backlog;
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size_t _available_memory;
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virtual double backlog(const compaction_backlog_tracker::ongoing_writes& ow, const compaction_backlog_tracker::ongoing_compactions& oc) const override {
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return _added_backlog * _available_memory;
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}
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virtual void add_sstable(sstables::shared_sstable sst) override { }
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virtual void remove_sstable(sstables::shared_sstable sst) override { }
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};
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compaction_manager::compaction_state& compaction_manager::get_compaction_state(table* t) {
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try {
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return _compaction_state.at(t);
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} catch (std::out_of_range&) {
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// Note: don't dereference t as it might not exist
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throw std::out_of_range(format("Compaction state for table [{}] not found", fmt::ptr(t)));
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}
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}
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future<> compaction_manager::perform_major_compaction(table* t) {
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if (_state != state::enabled) {
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return make_ready_future<>();
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}
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auto task = make_lw_shared<compaction_manager::task>(t, sstables::compaction_type::Compaction, get_compaction_state(t));
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_tasks.push_back(task);
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cmlog.debug("Major compaction task {} table={}: started", fmt::ptr(task.get()), fmt::ptr(t));
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// first take major compaction semaphore, then exclusely take compaction lock for table.
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// it cannot be the other way around, or minor compaction for this table would be
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// prevented while an ongoing major compaction doesn't release the semaphore.
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task->compaction_done = with_semaphore(_maintenance_ops_sem, 1, [this, task, t] {
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return with_lock(task->compaction_state.lock.for_write(), [this, task, t] {
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_stats.active_tasks++;
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if (!can_proceed(task)) {
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return make_ready_future<>();
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}
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// candidates are sstables that aren't being operated on by other compaction types.
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// those are eligible for major compaction.
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sstables::compaction_strategy cs = t->get_compaction_strategy();
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sstables::compaction_descriptor descriptor = cs.get_major_compaction_job(t->as_table_state(), get_candidates(*t));
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auto compacting = make_lw_shared<compacting_sstable_registration>(this, descriptor.sstables);
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descriptor.release_exhausted = [compacting] (const std::vector<sstables::shared_sstable>& exhausted_sstables) {
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compacting->release_compacting(exhausted_sstables);
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};
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task->setup_new_compaction();
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task->output_run_identifier = descriptor.run_identifier;
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cmlog.info0("User initiated compaction started on behalf of {}.{}", t->schema()->ks_name(), t->schema()->cf_name());
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compaction_backlog_tracker user_initiated(std::make_unique<user_initiated_backlog_tracker>(_compaction_controller.backlog_of_shares(200), _available_memory));
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return do_with(std::move(user_initiated), [this, t, descriptor = std::move(descriptor), task] (compaction_backlog_tracker& bt) mutable {
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register_backlog_tracker(bt);
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return with_scheduling_group(_compaction_controller.sg(), [this, t, descriptor = std::move(descriptor), task] () mutable {
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return t->compact_sstables(std::move(descriptor), task->compaction_data);
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});
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}).then([compacting = std::move(compacting)] {});
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});
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}).then_wrapped([this, task] (future<> f) {
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_stats.active_tasks--;
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_tasks.remove(task);
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cmlog.debug("Major compaction task {} table={}: done", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
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try {
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f.get();
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_stats.completed_tasks++;
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} catch (sstables::compaction_stopped_exception& e) {
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cmlog.info("major compaction stopped, reason: {}", e.what());
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} catch (...) {
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cmlog.error("major compaction failed, reason: {}", std::current_exception());
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_stats.errors++;
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}
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});
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return task->compaction_done.get_future().then([task] {});
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}
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future<> compaction_manager::run_custom_job(table* t, sstables::compaction_type type, noncopyable_function<future<>(sstables::compaction_data&)> job) {
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if (_state != state::enabled) {
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return make_ready_future<>();
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}
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auto task = make_lw_shared<compaction_manager::task>(t, type, get_compaction_state(t));
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_tasks.push_back(task);
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cmlog.debug("{} task {} table={}: started", type, fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
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auto job_ptr = std::make_unique<noncopyable_function<future<>(sstables::compaction_data&)>>(std::move(job));
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task->compaction_done = with_semaphore(_maintenance_ops_sem, 1, [this, task, &job = *job_ptr] () mutable {
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// take read lock for table, so major compaction and resharding can't proceed in parallel.
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return with_lock(task->compaction_state.lock.for_read(), [this, task, &job] () mutable {
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_stats.active_tasks++;
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if (!can_proceed(task)) {
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return make_ready_future<>();
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}
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task->setup_new_compaction();
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// NOTE:
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// no need to register shared sstables because they're excluded from non-resharding
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// compaction and some of them may not even belong to current shard.
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return job(task->compaction_data);
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});
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}).then_wrapped([this, task, job_ptr = std::move(job_ptr), type] (future<> f) {
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_stats.active_tasks--;
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_tasks.remove(task);
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cmlog.debug("{} task {} table={}: done", type, fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
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try {
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f.get();
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} catch (sstables::compaction_stopped_exception& e) {
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cmlog.info("{} was abruptly stopped, reason: {}", task->type, e.what());
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throw;
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} catch (...) {
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cmlog.error("{} failed: {}", task->type, std::current_exception());
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throw;
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}
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});
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return task->compaction_done.get_future().then([task] {});
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}
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future<>
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compaction_manager::run_with_compaction_disabled(table* t, std::function<future<> ()> func) {
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auto& c_state = _compaction_state[t];
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auto holder = c_state.gate.hold();
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c_state.compaction_disabled_counter++;
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std::exception_ptr err;
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try {
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co_await stop_ongoing_compactions("user-triggered operation", t);
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co_await func();
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} catch (...) {
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err = std::current_exception();
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}
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#ifdef DEBUG
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assert(_compaction_state.contains(t));
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#endif
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// submit compaction request if we're the last holder of the gate which is still opened.
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if (--c_state.compaction_disabled_counter == 0 && !c_state.gate.is_closed()) {
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submit(t);
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}
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if (err) {
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std::rethrow_exception(err);
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}
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co_return;
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}
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void compaction_manager::task::setup_new_compaction() {
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compaction_data = create_compaction_data();
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compaction_running = true;
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}
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void compaction_manager::task::finish_compaction() {
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compaction_running = false;
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output_run_identifier = {};
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}
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future<> compaction_manager::task_stop(lw_shared_ptr<compaction_manager::task> task, sstring reason) {
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cmlog.debug("Stopping task {} table={}", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
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task->stopping = true;
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task->compaction_data.stop(reason);
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auto f = task->compaction_done.get_future();
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return f.then_wrapped([task] (future<> f) {
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task->stopping = false;
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if (f.failed()) {
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auto ex = f.get_exception();
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cmlog.debug("Stopping task {} table={}: task returned error: {}", fmt::ptr(task.get()), fmt::ptr(task->compacting_table), ex);
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return make_exception_future<>(std::move(ex));
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}
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cmlog.debug("Stopping task {} table={}: done", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
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return make_ready_future<>();
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});
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}
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compaction_manager::compaction_manager(compaction_scheduling_group csg, maintenance_scheduling_group msg, size_t available_memory, abort_source& as)
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: _compaction_controller(csg.cpu, csg.io, 250ms, [this, available_memory] () -> float {
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_last_backlog = backlog();
|
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auto b = _last_backlog / available_memory;
|
|
// This means we are using an unimplemented strategy
|
|
if (compaction_controller::backlog_disabled(b)) {
|
|
// returning the normalization factor means that we'll return the maximum
|
|
// output in the _control_points. We can get rid of this when we implement
|
|
// all strategies.
|
|
return compaction_controller::normalization_factor;
|
|
}
|
|
return b;
|
|
})
|
|
, _backlog_manager(_compaction_controller)
|
|
, _maintenance_sg(msg)
|
|
, _available_memory(available_memory)
|
|
, _early_abort_subscription(as.subscribe([this] () noexcept {
|
|
do_stop();
|
|
}))
|
|
{
|
|
register_metrics();
|
|
}
|
|
|
|
compaction_manager::compaction_manager(compaction_scheduling_group csg, maintenance_scheduling_group msg, size_t available_memory, uint64_t shares, abort_source& as)
|
|
: _compaction_controller(csg.cpu, csg.io, shares)
|
|
, _backlog_manager(_compaction_controller)
|
|
, _maintenance_sg(msg)
|
|
, _available_memory(available_memory)
|
|
, _early_abort_subscription(as.subscribe([this] () noexcept {
|
|
do_stop();
|
|
}))
|
|
{
|
|
register_metrics();
|
|
}
|
|
|
|
compaction_manager::compaction_manager()
|
|
: _compaction_controller(seastar::default_scheduling_group(), default_priority_class(), 1)
|
|
, _backlog_manager(_compaction_controller)
|
|
, _maintenance_sg(maintenance_scheduling_group{default_scheduling_group(), default_priority_class()})
|
|
, _available_memory(1)
|
|
{
|
|
// No metric registration because this constructor is supposed to be used only by the testing
|
|
// infrastructure.
|
|
}
|
|
|
|
compaction_manager::~compaction_manager() {
|
|
// Assert that compaction manager was explicitly stopped, if started.
|
|
// Otherwise, fiber(s) will be alive after the object is stopped.
|
|
assert(_state == state::none || _state == state::stopped);
|
|
}
|
|
|
|
void compaction_manager::register_metrics() {
|
|
namespace sm = seastar::metrics;
|
|
|
|
_metrics.add_group("compaction_manager", {
|
|
sm::make_gauge("compactions", [this] { return _stats.active_tasks; },
|
|
sm::description("Holds the number of currently active compactions.")),
|
|
sm::make_gauge("pending_compactions", [this] { return _stats.pending_tasks; },
|
|
sm::description("Holds the number of compaction tasks waiting for an opportunity to run.")),
|
|
sm::make_gauge("backlog", [this] { return _last_backlog; },
|
|
sm::description("Holds the sum of compaction backlog for all tables in the system.")),
|
|
});
|
|
}
|
|
|
|
void compaction_manager::enable() {
|
|
assert(_state == state::none || _state == state::disabled);
|
|
_state = state::enabled;
|
|
_compaction_submission_timer.arm(periodic_compaction_submission_interval());
|
|
postponed_compactions_reevaluation();
|
|
}
|
|
|
|
void compaction_manager::disable() {
|
|
assert(_state == state::none || _state == state::enabled);
|
|
_state = state::disabled;
|
|
_compaction_submission_timer.cancel();
|
|
}
|
|
|
|
std::function<void()> compaction_manager::compaction_submission_callback() {
|
|
return [this] () mutable {
|
|
for (auto& e: _compaction_state) {
|
|
submit(e.first);
|
|
}
|
|
};
|
|
}
|
|
|
|
void compaction_manager::postponed_compactions_reevaluation() {
|
|
_waiting_reevalution = repeat([this] {
|
|
return _postponed_reevaluation.wait().then([this] {
|
|
if (_state != state::enabled) {
|
|
_postponed.clear();
|
|
return stop_iteration::yes;
|
|
}
|
|
auto postponed = std::move(_postponed);
|
|
try {
|
|
for (auto& t : postponed) {
|
|
submit(t);
|
|
}
|
|
} catch (...) {
|
|
_postponed = std::move(postponed);
|
|
}
|
|
return stop_iteration::no;
|
|
});
|
|
});
|
|
}
|
|
|
|
void compaction_manager::reevaluate_postponed_compactions() {
|
|
_postponed_reevaluation.signal();
|
|
}
|
|
|
|
void compaction_manager::postpone_compaction_for_table(table* t) {
|
|
_postponed.insert(t);
|
|
}
|
|
|
|
future<> compaction_manager::stop_tasks(std::vector<lw_shared_ptr<task>> tasks, sstring reason) {
|
|
// To prevent compaction from being postponed while tasks are being stopped, let's set all
|
|
// tasks as stopping before the deferring point below.
|
|
for (auto& t : tasks) {
|
|
t->stopping = true;
|
|
}
|
|
return do_with(std::move(tasks), [this, reason] (std::vector<lw_shared_ptr<task>>& tasks) {
|
|
return parallel_for_each(tasks, [this, reason] (auto& task) {
|
|
return this->task_stop(task, reason).then_wrapped([](future <> f) {
|
|
try {
|
|
f.get();
|
|
} catch (sstables::compaction_stopped_exception& e) {
|
|
// swallow stop exception if a given procedure decides to propagate it to the caller,
|
|
// as it happens with reshard and reshape.
|
|
} catch (...) {
|
|
throw;
|
|
}
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
future<> compaction_manager::stop_ongoing_compactions(sstring reason, table* t, std::optional<sstables::compaction_type> type_opt) {
|
|
auto ongoing_compactions = get_compactions(t).size();
|
|
auto tasks = boost::copy_range<std::vector<lw_shared_ptr<task>>>(_tasks | boost::adaptors::filtered([t, type_opt] (auto& task) {
|
|
return (!t || task->compacting_table == t) && (!type_opt || task->type == *type_opt);
|
|
}));
|
|
logging::log_level level = tasks.empty() ? log_level::debug : log_level::info;
|
|
if (cmlog.is_enabled(level)) {
|
|
std::string scope = "";
|
|
if (t) {
|
|
scope = fmt::format(" for table {}.{}", t->schema()->ks_name(), t->schema()->cf_name());
|
|
}
|
|
if (type_opt) {
|
|
scope += fmt::format(" {} type={}", scope.size() ? "and" : "for", *type_opt);
|
|
}
|
|
cmlog.log(level, "Stopping {} tasks for {} ongoing compactions{} due to {}", tasks.size(), ongoing_compactions, scope, reason);
|
|
}
|
|
return stop_tasks(std::move(tasks), std::move(reason));
|
|
}
|
|
|
|
future<> compaction_manager::drain() {
|
|
if (!*_early_abort_subscription) {
|
|
return make_ready_future<>();
|
|
}
|
|
|
|
_state = state::disabled;
|
|
return stop_ongoing_compactions("drain");
|
|
}
|
|
|
|
future<> compaction_manager::stop() {
|
|
// never started
|
|
if (_state == state::none) {
|
|
return make_ready_future<>();
|
|
} else {
|
|
do_stop();
|
|
return std::move(*_stop_future);
|
|
}
|
|
}
|
|
|
|
void compaction_manager::really_do_stop() {
|
|
if (_state == state::none || _state == state::stopped) {
|
|
return;
|
|
}
|
|
|
|
_state = state::stopped;
|
|
cmlog.info("Asked to stop");
|
|
// Reset the metrics registry
|
|
_metrics.clear();
|
|
_stop_future.emplace(stop_ongoing_compactions("shutdown").then([this] () mutable {
|
|
reevaluate_postponed_compactions();
|
|
return std::move(_waiting_reevalution);
|
|
}).then([this] {
|
|
_weight_tracker.clear();
|
|
_compaction_submission_timer.cancel();
|
|
cmlog.info("Stopped");
|
|
return _compaction_controller.shutdown();
|
|
}));
|
|
}
|
|
|
|
void compaction_manager::do_stop() noexcept {
|
|
try {
|
|
really_do_stop();
|
|
} catch (...) {
|
|
try {
|
|
cmlog.error("Failed to stop the manager: {}", std::current_exception());
|
|
} catch (...) {
|
|
// Nothing else we can do.
|
|
}
|
|
}
|
|
}
|
|
|
|
inline bool compaction_manager::can_proceed(const lw_shared_ptr<task>& task) {
|
|
return (_state == state::enabled) && !task->stopping && _compaction_state.contains(task->compacting_table) &&
|
|
(task->type != sstables::compaction_type::Compaction || !_compaction_state[task->compacting_table].compaction_disabled());
|
|
}
|
|
|
|
inline future<> compaction_manager::put_task_to_sleep(lw_shared_ptr<task>& task) {
|
|
cmlog.info("compaction task handler sleeping for {} seconds",
|
|
std::chrono::duration_cast<std::chrono::seconds>(task->compaction_retry.sleep_time()).count());
|
|
return task->compaction_retry.retry();
|
|
}
|
|
|
|
inline bool compaction_manager::maybe_stop_on_error(future<> f, stop_iteration will_stop) {
|
|
bool retry = false;
|
|
|
|
try {
|
|
f.get();
|
|
} catch (sstables::compaction_stopped_exception& e) {
|
|
cmlog.info("compaction info: {}: stopping", e.what());
|
|
} catch (sstables::compaction_aborted_exception& e) {
|
|
cmlog.error("compaction info: {}: stopping", e.what());
|
|
_stats.errors++;
|
|
} catch (storage_io_error& e) {
|
|
_stats.errors++;
|
|
cmlog.error("compaction failed due to storage io error: {}: stopping", e.what());
|
|
do_stop();
|
|
} catch (...) {
|
|
_stats.errors++;
|
|
retry = (will_stop == stop_iteration::no);
|
|
cmlog.error("compaction failed: {}: {}", std::current_exception(), retry ? "retrying" : "stopping");
|
|
}
|
|
return retry;
|
|
}
|
|
|
|
void compaction_manager::submit(table* t) {
|
|
if (t->is_auto_compaction_disabled_by_user()) {
|
|
return;
|
|
}
|
|
|
|
auto task = make_lw_shared<compaction_manager::task>(t, sstables::compaction_type::Compaction, get_compaction_state(t));
|
|
_tasks.push_back(task);
|
|
_stats.pending_tasks++;
|
|
cmlog.debug("Compaction task {} table={}: started", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
|
|
task->compaction_done = repeat([this, task, t] () mutable {
|
|
if (!can_proceed(task)) {
|
|
_stats.pending_tasks--;
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
return with_lock(task->compaction_state.lock.for_read(), [this, task] () mutable {
|
|
return with_scheduling_group(_compaction_controller.sg(), [this, task = std::move(task)] () mutable {
|
|
table& t = *task->compacting_table;
|
|
sstables::compaction_strategy cs = t.get_compaction_strategy();
|
|
sstables::compaction_descriptor descriptor = cs.get_sstables_for_compaction(t.as_table_state(), get_candidates(t));
|
|
int weight = calculate_weight(descriptor);
|
|
|
|
if (descriptor.sstables.empty() || !can_proceed(task) || t.is_auto_compaction_disabled_by_user()) {
|
|
_stats.pending_tasks--;
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
if (!can_register_compaction(&t, weight, descriptor.fan_in())) {
|
|
_stats.pending_tasks--;
|
|
cmlog.debug("Refused compaction job ({} sstable(s)) of weight {} for {}.{}, postponing it...",
|
|
descriptor.sstables.size(), weight, t.schema()->ks_name(), t.schema()->cf_name());
|
|
postpone_compaction_for_table(&t);
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
auto compacting = make_lw_shared<compacting_sstable_registration>(this, descriptor.sstables);
|
|
auto weight_r = compaction_weight_registration(this, weight);
|
|
descriptor.release_exhausted = [compacting] (const std::vector<sstables::shared_sstable>& exhausted_sstables) {
|
|
compacting->release_compacting(exhausted_sstables);
|
|
};
|
|
cmlog.debug("Accepted compaction job ({} sstable(s)) of weight {} for {}.{}",
|
|
descriptor.sstables.size(), weight, t.schema()->ks_name(), t.schema()->cf_name());
|
|
|
|
_stats.pending_tasks--;
|
|
_stats.active_tasks++;
|
|
task->setup_new_compaction();
|
|
task->output_run_identifier = descriptor.run_identifier;
|
|
return t.compact_sstables(std::move(descriptor), task->compaction_data).then_wrapped([this, task, compacting = std::move(compacting), weight_r = std::move(weight_r)] (future<> f) mutable {
|
|
_stats.active_tasks--;
|
|
task->finish_compaction();
|
|
|
|
if (!can_proceed(task)) {
|
|
maybe_stop_on_error(std::move(f), stop_iteration::yes);
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
if (maybe_stop_on_error(std::move(f))) {
|
|
_stats.pending_tasks++;
|
|
return put_task_to_sleep(task).then([] {
|
|
return make_ready_future<stop_iteration>(stop_iteration::no);
|
|
});
|
|
}
|
|
_stats.pending_tasks++;
|
|
_stats.completed_tasks++;
|
|
task->compaction_retry.reset();
|
|
reevaluate_postponed_compactions();
|
|
return make_ready_future<stop_iteration>(stop_iteration::no);
|
|
});
|
|
});
|
|
});
|
|
}).finally([this, task] {
|
|
_tasks.remove(task);
|
|
cmlog.debug("Compaction task {} table={}: done", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
});
|
|
}
|
|
|
|
void compaction_manager::submit_offstrategy(table* t) {
|
|
auto task = make_lw_shared<compaction_manager::task>(t, sstables::compaction_type::Reshape, get_compaction_state(t));
|
|
_tasks.push_back(task);
|
|
_stats.pending_tasks++;
|
|
cmlog.debug("Offstrategy compaction task {} table={}: started", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
|
|
task->compaction_done = repeat([this, task, t] () mutable {
|
|
if (!can_proceed(task)) {
|
|
_stats.pending_tasks--;
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
return with_semaphore(_maintenance_ops_sem, 1, [this, task, t] () mutable {
|
|
return with_lock(task->compaction_state.lock.for_read(), [this, task, t] () mutable {
|
|
_stats.pending_tasks--;
|
|
if (!can_proceed(task)) {
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
_stats.active_tasks++;
|
|
task->setup_new_compaction();
|
|
|
|
return t->run_offstrategy_compaction(task->compaction_data).then_wrapped([this, task] (future<> f) mutable {
|
|
_stats.active_tasks--;
|
|
task->finish_compaction();
|
|
try {
|
|
f.get();
|
|
_stats.completed_tasks++;
|
|
} catch (sstables::compaction_stopped_exception& e) {
|
|
cmlog.info("off-strategy compaction: {}", e.what());
|
|
} catch (sstables::compaction_aborted_exception& e) {
|
|
_stats.errors++;
|
|
cmlog.error("off-strategy compaction: {}", e.what());
|
|
} catch (...) {
|
|
_stats.errors++;
|
|
_stats.pending_tasks++;
|
|
cmlog.error("off-strategy compaction failed due to {}, retrying...", std::current_exception());
|
|
return put_task_to_sleep(task).then([] {
|
|
return make_ready_future<stop_iteration>(stop_iteration::no);
|
|
});
|
|
}
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
});
|
|
});
|
|
});
|
|
}).finally([this, task] {
|
|
_tasks.remove(task);
|
|
cmlog.debug("Offstrategy compaction task {} table={}: done", fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
});
|
|
}
|
|
|
|
future<> compaction_manager::rewrite_sstables(table* t, sstables::compaction_type_options options, get_candidates_func get_func, can_purge_tombstones can_purge) {
|
|
auto task = make_lw_shared<compaction_manager::task>(t, options.type(), get_compaction_state(t));
|
|
_tasks.push_back(task);
|
|
cmlog.debug("{} task {} table={}: started", options.type(), fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
|
|
std::vector<sstables::shared_sstable> sstables;
|
|
std::optional<compacting_sstable_registration> compacting;
|
|
|
|
// since we might potentially have ongoing compactions, and we
|
|
// must ensure that all sstables created before we run are included
|
|
// in the re-write, we need to barrier out any previously running
|
|
// compaction.
|
|
co_await run_with_compaction_disabled(t, [&] () mutable -> future<> {
|
|
sstables = co_await get_func();
|
|
compacting = compacting_sstable_registration(this, sstables);
|
|
});
|
|
// sort sstables by size in descending order, such that the smallest files will be rewritten first
|
|
// (as sstable to be rewritten is popped off from the back of container), so rewrite will have higher
|
|
// chance to succeed when the biggest files are reached.
|
|
std::sort(sstables.begin(), sstables.end(), [](sstables::shared_sstable& a, sstables::shared_sstable& b) {
|
|
return a->data_size() > b->data_size();
|
|
});
|
|
|
|
_stats.pending_tasks += sstables.size();
|
|
|
|
task->compaction_done = do_until([this, &sstables, task] { return sstables.empty() || !can_proceed(task); },
|
|
[this, task, options, &sstables, &compacting, can_purge] () mutable {
|
|
auto sst = sstables.back();
|
|
sstables.pop_back();
|
|
|
|
return repeat([this, task, options, sst = std::move(sst), &compacting, can_purge] () mutable {
|
|
table& t = *task->compacting_table;
|
|
auto sstable_level = sst->get_sstable_level();
|
|
auto run_identifier = sst->run_identifier();
|
|
auto sstable_set_snapshot = can_purge ? std::make_optional(t.get_sstable_set()) : std::nullopt;
|
|
auto descriptor = sstables::compaction_descriptor({ sst }, std::move(sstable_set_snapshot), _maintenance_sg.io,
|
|
sstable_level, sstables::compaction_descriptor::default_max_sstable_bytes, run_identifier, options);
|
|
|
|
// Releases reference to cleaned sstable such that respective used disk space can be freed.
|
|
descriptor.release_exhausted = [&compacting] (const std::vector<sstables::shared_sstable>& exhausted_sstables) {
|
|
compacting->release_compacting(exhausted_sstables);
|
|
};
|
|
|
|
return with_semaphore(_maintenance_ops_sem, 1, [this, task, &t, descriptor = std::move(descriptor)] () mutable {
|
|
// Take write lock for table to serialize cleanup/upgrade sstables/scrub with major compaction/reshape/reshard.
|
|
return with_lock(_compaction_state[&t].lock.for_write(), [this, task, &t, descriptor = std::move(descriptor)] () mutable {
|
|
_stats.pending_tasks--;
|
|
_stats.active_tasks++;
|
|
task->setup_new_compaction();
|
|
task->output_run_identifier = descriptor.run_identifier;
|
|
compaction_backlog_tracker user_initiated(std::make_unique<user_initiated_backlog_tracker>(_compaction_controller.backlog_of_shares(200), _available_memory));
|
|
return do_with(std::move(user_initiated), [this, &t, descriptor = std::move(descriptor), task] (compaction_backlog_tracker& bt) mutable {
|
|
return with_scheduling_group(_maintenance_sg.cpu, [this, &t, descriptor = std::move(descriptor), task]() mutable {
|
|
return t.compact_sstables(std::move(descriptor), task->compaction_data);
|
|
});
|
|
});
|
|
});
|
|
}).then_wrapped([this, task] (future<> f) mutable {
|
|
task->finish_compaction();
|
|
_stats.active_tasks--;
|
|
if (!can_proceed(task)) {
|
|
maybe_stop_on_error(std::move(f), stop_iteration::yes);
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
}
|
|
if (maybe_stop_on_error(std::move(f))) {
|
|
_stats.pending_tasks++;
|
|
return put_task_to_sleep(task).then([] {
|
|
return make_ready_future<stop_iteration>(stop_iteration::no);
|
|
});
|
|
}
|
|
_stats.completed_tasks++;
|
|
reevaluate_postponed_compactions();
|
|
return make_ready_future<stop_iteration>(stop_iteration::yes);
|
|
});
|
|
});
|
|
}).finally([this, task, type = options.type(), &sstables] {
|
|
_stats.pending_tasks -= sstables.size();
|
|
_tasks.remove(task);
|
|
cmlog.debug("{} task {} table={}: done", type, fmt::ptr(task.get()), fmt::ptr(task->compacting_table));
|
|
});
|
|
|
|
co_return co_await task->compaction_done.get_future();
|
|
}
|
|
|
|
future<> compaction_manager::perform_sstable_scrub_validate_mode(table* t) {
|
|
// All sstables must be included, even the ones being compacted, such that everything in table is validated.
|
|
auto all_sstables = boost::copy_range<std::vector<sstables::shared_sstable>>(*t->get_sstables());
|
|
return run_custom_job(t, sstables::compaction_type::Scrub, [this, &t = *t, sstables = std::move(all_sstables)] (sstables::compaction_data& info) mutable -> future<> {
|
|
class pending_tasks {
|
|
compaction_manager::stats& _stats;
|
|
size_t _n;
|
|
public:
|
|
pending_tasks(compaction_manager::stats& stats, size_t n) : _stats(stats), _n(n) { _stats.pending_tasks += _n; }
|
|
~pending_tasks() { _stats.pending_tasks -= _n; }
|
|
void operator--(int) {
|
|
--_stats.pending_tasks;
|
|
--_n;
|
|
}
|
|
};
|
|
pending_tasks pending(_stats, sstables.size());
|
|
|
|
while (!sstables.empty()) {
|
|
auto sst = sstables.back();
|
|
sstables.pop_back();
|
|
|
|
try {
|
|
co_await with_scheduling_group(_maintenance_sg.cpu, [&] () {
|
|
auto desc = sstables::compaction_descriptor(
|
|
{ sst },
|
|
{},
|
|
_maintenance_sg.io,
|
|
sst->get_sstable_level(),
|
|
sstables::compaction_descriptor::default_max_sstable_bytes,
|
|
sst->run_identifier(),
|
|
sstables::compaction_type_options::make_scrub(sstables::compaction_type_options::scrub::mode::validate));
|
|
return compact_sstables(std::move(desc), info, t.as_table_state());
|
|
});
|
|
} catch (sstables::compaction_stopped_exception&) {
|
|
throw; // let run_custom_job() handle this
|
|
} catch (storage_io_error&) {
|
|
throw; // let run_custom_job() handle this
|
|
} catch (...) {
|
|
// We are validating potentially corrupt sstables, errors are
|
|
// expected, just continue with the other sstables when seeing
|
|
// one.
|
|
_stats.errors++;
|
|
cmlog.error("Scrubbing in validate mode {} failed due to {}, continuing.", sst->get_filename(), std::current_exception());
|
|
}
|
|
|
|
pending--;
|
|
}
|
|
});
|
|
}
|
|
|
|
bool needs_cleanup(const sstables::shared_sstable& sst,
|
|
const dht::token_range_vector& sorted_owned_ranges,
|
|
schema_ptr s) {
|
|
auto first = sst->get_first_partition_key();
|
|
auto last = sst->get_last_partition_key();
|
|
auto first_token = dht::get_token(*s, first);
|
|
auto last_token = dht::get_token(*s, last);
|
|
dht::token_range sst_token_range = dht::token_range::make(first_token, last_token);
|
|
|
|
auto r = std::lower_bound(sorted_owned_ranges.begin(), sorted_owned_ranges.end(), first_token,
|
|
[] (const range<dht::token>& a, const dht::token& b) {
|
|
// check that range a is before token b.
|
|
return a.after(b, dht::token_comparator());
|
|
});
|
|
|
|
// return true iff sst partition range isn't fully contained in any of the owned ranges.
|
|
if (r != sorted_owned_ranges.end()) {
|
|
if (r->contains(sst_token_range, dht::token_comparator())) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
future<> compaction_manager::perform_cleanup(database& db, table* t) {
|
|
auto check_for_cleanup = [this, t] {
|
|
return boost::algorithm::any_of(_tasks, [t] (auto& task) {
|
|
return task->compacting_table == t && task->type == sstables::compaction_type::Cleanup;
|
|
});
|
|
};
|
|
if (check_for_cleanup()) {
|
|
return make_exception_future<>(std::runtime_error(format("cleanup request failed: there is an ongoing cleanup on {}.{}",
|
|
t->schema()->ks_name(), t->schema()->cf_name())));
|
|
}
|
|
|
|
auto sorted_owned_ranges = db.get_keyspace_local_ranges(t->schema()->ks_name());
|
|
auto get_sstables = [this, &db, t, sorted_owned_ranges] () -> future<std::vector<sstables::shared_sstable>> {
|
|
return seastar::async([this, &db, t, sorted_owned_ranges = std::move(sorted_owned_ranges)] {
|
|
auto schema = t->schema();
|
|
auto sstables = std::vector<sstables::shared_sstable>{};
|
|
const auto candidates = get_candidates(*t);
|
|
std::copy_if(candidates.begin(), candidates.end(), std::back_inserter(sstables), [&sorted_owned_ranges, schema] (const sstables::shared_sstable& sst) {
|
|
seastar::thread::maybe_yield();
|
|
return sorted_owned_ranges.empty() || needs_cleanup(sst, sorted_owned_ranges, schema);
|
|
});
|
|
return sstables;
|
|
});
|
|
};
|
|
|
|
return rewrite_sstables(t, sstables::compaction_type_options::make_cleanup(std::move(sorted_owned_ranges)), std::move(get_sstables));
|
|
}
|
|
|
|
// Submit a table to be upgraded and wait for its termination.
|
|
future<> compaction_manager::perform_sstable_upgrade(database& db, table* t, bool exclude_current_version) {
|
|
auto get_sstables = [this, &db, t, exclude_current_version] {
|
|
std::vector<sstables::shared_sstable> tables;
|
|
|
|
auto last_version = t->get_sstables_manager().get_highest_supported_format();
|
|
|
|
for (auto& sst : get_candidates(*t)) {
|
|
// if we are a "normal" upgrade, we only care about
|
|
// tables with older versions, but potentially
|
|
// we are to actually rewrite everything. (-a)
|
|
if (!exclude_current_version || sst->get_version() < last_version) {
|
|
tables.emplace_back(sst);
|
|
}
|
|
}
|
|
|
|
return make_ready_future<std::vector<sstables::shared_sstable>>(tables);
|
|
};
|
|
|
|
// doing a "cleanup" is about as compacting as we need
|
|
// to be, provided we get to decide the tables to process,
|
|
// and ignoring any existing operations.
|
|
// Note that we potentially could be doing multiple
|
|
// upgrades here in parallel, but that is really the users
|
|
// problem.
|
|
return rewrite_sstables(t, sstables::compaction_type_options::make_upgrade(db.get_keyspace_local_ranges(t->schema()->ks_name())), std::move(get_sstables));
|
|
}
|
|
|
|
// Submit a table to be scrubbed and wait for its termination.
|
|
future<> compaction_manager::perform_sstable_scrub(table* t, sstables::compaction_type_options::scrub opts) {
|
|
auto scrub_mode = opts.operation_mode;
|
|
if (scrub_mode == sstables::compaction_type_options::scrub::mode::validate) {
|
|
return perform_sstable_scrub_validate_mode(t);
|
|
}
|
|
return rewrite_sstables(t, sstables::compaction_type_options::make_scrub(scrub_mode), [this, t, opts] {
|
|
auto all_sstables = t->get_sstable_set().all();
|
|
std::vector<sstables::shared_sstable> sstables = boost::copy_range<std::vector<sstables::shared_sstable>>(*all_sstables
|
|
| boost::adaptors::filtered([&opts] (const sstables::shared_sstable& sst) {
|
|
if (sst->requires_view_building()) {
|
|
return false;
|
|
}
|
|
switch (opts.quarantine_operation_mode) {
|
|
case sstables::compaction_type_options::scrub::quarantine_mode::include:
|
|
return true;
|
|
case sstables::compaction_type_options::scrub::quarantine_mode::exclude:
|
|
return !sst->is_quarantined();
|
|
case sstables::compaction_type_options::scrub::quarantine_mode::only:
|
|
return sst->is_quarantined();
|
|
}
|
|
}));
|
|
return make_ready_future<std::vector<sstables::shared_sstable>>(std::move(sstables));
|
|
}, can_purge_tombstones::no);
|
|
}
|
|
|
|
void compaction_manager::add(table* t) {
|
|
auto [_, inserted] = _compaction_state.insert({t, compaction_state{}});
|
|
if (!inserted) {
|
|
auto s = t->schema();
|
|
on_internal_error(cmlog, format("compaction_state for table {}.{} [{}] already exists", s->ks_name(), s->cf_name(), fmt::ptr(t)));
|
|
}
|
|
}
|
|
|
|
future<> compaction_manager::remove(table* t) {
|
|
auto handle = _compaction_state.extract(t);
|
|
|
|
if (!handle.empty()) {
|
|
auto& c_state = handle.mapped();
|
|
|
|
// We need to guarantee that a task being stopped will not retry to compact
|
|
// a table being removed.
|
|
// The requirement above is provided by stop_ongoing_compactions().
|
|
_postponed.erase(t);
|
|
|
|
// Wait for the termination of an ongoing compaction on table T, if any.
|
|
co_await stop_ongoing_compactions("table removal", t);
|
|
|
|
// Wait for all functions running under gate to terminate.
|
|
co_await c_state.gate.close();
|
|
}
|
|
#ifdef DEBUG
|
|
auto found = false;
|
|
sstring msg;
|
|
for (auto& task : _tasks) {
|
|
if (task->compacting_table == t) {
|
|
if (!msg.empty()) {
|
|
msg += "\n";
|
|
}
|
|
msg += format("Found compaction task {} table={} after remove", fmt::ptr(task.get()), fmt::ptr(t));
|
|
found = true;
|
|
}
|
|
}
|
|
if (found) {
|
|
on_internal_error_noexcept(cmlog, msg);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
const std::vector<sstables::compaction_info> compaction_manager::get_compactions(table* t) const {
|
|
auto to_info = [] (const lw_shared_ptr<task>& task) {
|
|
sstables::compaction_info ret;
|
|
ret.compaction_uuid = task->compaction_data.compaction_uuid;
|
|
ret.type = task->type;
|
|
ret.ks_name = task->compacting_table->schema()->ks_name();
|
|
ret.cf_name = task->compacting_table->schema()->cf_name();
|
|
ret.total_partitions = task->compaction_data.total_partitions;
|
|
ret.total_keys_written = task->compaction_data.total_keys_written;
|
|
return ret;
|
|
};
|
|
using ret = std::vector<sstables::compaction_info>;
|
|
return boost::copy_range<ret>(_tasks | boost::adaptors::filtered([t] (const lw_shared_ptr<task>& task) {
|
|
return (!t || task->compacting_table == t) && task->compaction_running;
|
|
}) | boost::adaptors::transformed(to_info));
|
|
}
|
|
|
|
future<> compaction_manager::stop_compaction(sstring type) {
|
|
sstables::compaction_type target_type;
|
|
try {
|
|
target_type = sstables::to_compaction_type(type);
|
|
} catch (...) {
|
|
throw std::runtime_error(format("Compaction of type {} cannot be stopped by compaction manager: {}", type.c_str(), std::current_exception()));
|
|
}
|
|
return stop_ongoing_compactions("user request", nullptr, target_type);
|
|
}
|
|
|
|
void compaction_manager::propagate_replacement(table* t,
|
|
const std::vector<sstables::shared_sstable>& removed, const std::vector<sstables::shared_sstable>& added) {
|
|
for (auto& task : _tasks) {
|
|
if (task->compacting_table == t && task->compaction_running) {
|
|
task->compaction_data.pending_replacements.push_back({ removed, added });
|
|
}
|
|
}
|
|
}
|
|
|
|
double compaction_backlog_tracker::backlog() const {
|
|
return _disabled ? compaction_controller::disable_backlog : _impl->backlog(_ongoing_writes, _ongoing_compactions);
|
|
}
|
|
|
|
void compaction_backlog_tracker::add_sstable(sstables::shared_sstable sst) {
|
|
if (_disabled || !sstable_belongs_to_tracker(sst)) {
|
|
return;
|
|
}
|
|
_ongoing_writes.erase(sst);
|
|
try {
|
|
_impl->add_sstable(std::move(sst));
|
|
} catch (...) {
|
|
cmlog.warn("Disabling backlog tracker due to exception {}", std::current_exception());
|
|
disable();
|
|
}
|
|
}
|
|
|
|
void compaction_backlog_tracker::remove_sstable(sstables::shared_sstable sst) {
|
|
if (_disabled || !sstable_belongs_to_tracker(sst)) {
|
|
return;
|
|
}
|
|
|
|
_ongoing_compactions.erase(sst);
|
|
try {
|
|
_impl->remove_sstable(std::move(sst));
|
|
} catch (...) {
|
|
cmlog.warn("Disabling backlog tracker due to exception {}", std::current_exception());
|
|
disable();
|
|
}
|
|
}
|
|
|
|
bool compaction_backlog_tracker::sstable_belongs_to_tracker(const sstables::shared_sstable& sst) {
|
|
return sstables::is_eligible_for_compaction(sst);
|
|
}
|
|
|
|
void compaction_backlog_tracker::register_partially_written_sstable(sstables::shared_sstable sst, backlog_write_progress_manager& wp) {
|
|
if (_disabled) {
|
|
return;
|
|
}
|
|
try {
|
|
_ongoing_writes.emplace(sst, &wp);
|
|
} catch (...) {
|
|
// We can potentially recover from adding ongoing compactions or writes when the process
|
|
// ends. The backlog will just be temporarily wrong. If we are are suffering from something
|
|
// more serious like memory exhaustion we will soon fail again in either add / remove and
|
|
// then we'll disable the tracker. For now, try our best.
|
|
cmlog.warn("backlog tracker couldn't register partially written SSTable to exception {}", std::current_exception());
|
|
}
|
|
}
|
|
|
|
void compaction_backlog_tracker::register_compacting_sstable(sstables::shared_sstable sst, backlog_read_progress_manager& rp) {
|
|
if (_disabled) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
_ongoing_compactions.emplace(sst, &rp);
|
|
} catch (...) {
|
|
cmlog.warn("backlog tracker couldn't register partially compacting SSTable to exception {}", std::current_exception());
|
|
}
|
|
}
|
|
|
|
void compaction_backlog_tracker::transfer_ongoing_charges(compaction_backlog_tracker& new_bt, bool move_read_charges) {
|
|
for (auto&& w : _ongoing_writes) {
|
|
new_bt.register_partially_written_sstable(w.first, *w.second);
|
|
}
|
|
|
|
if (move_read_charges) {
|
|
for (auto&& w : _ongoing_compactions) {
|
|
new_bt.register_compacting_sstable(w.first, *w.second);
|
|
}
|
|
}
|
|
_ongoing_writes = {};
|
|
_ongoing_compactions = {};
|
|
}
|
|
|
|
void compaction_backlog_tracker::revert_charges(sstables::shared_sstable sst) {
|
|
_ongoing_writes.erase(sst);
|
|
_ongoing_compactions.erase(sst);
|
|
}
|
|
|
|
compaction_backlog_tracker::~compaction_backlog_tracker() {
|
|
if (_manager) {
|
|
_manager->remove_backlog_tracker(this);
|
|
}
|
|
}
|
|
|
|
void compaction_backlog_manager::remove_backlog_tracker(compaction_backlog_tracker* tracker) {
|
|
_backlog_trackers.erase(tracker);
|
|
}
|
|
|
|
double compaction_backlog_manager::backlog() const {
|
|
try {
|
|
double backlog = 0;
|
|
|
|
for (auto& tracker: _backlog_trackers) {
|
|
backlog += tracker->backlog();
|
|
}
|
|
if (compaction_controller::backlog_disabled(backlog)) {
|
|
return compaction_controller::disable_backlog;
|
|
} else {
|
|
return backlog;
|
|
}
|
|
} catch (...) {
|
|
return _compaction_controller->backlog_of_shares(1000);
|
|
}
|
|
}
|
|
|
|
void compaction_backlog_manager::register_backlog_tracker(compaction_backlog_tracker& tracker) {
|
|
tracker._manager = this;
|
|
_backlog_trackers.insert(&tracker);
|
|
}
|
|
|
|
compaction_backlog_manager::~compaction_backlog_manager() {
|
|
for (auto* tracker : _backlog_trackers) {
|
|
tracker->_manager = nullptr;
|
|
}
|
|
}
|