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doris/be/src/olap/storage_engine.cpp

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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "olap/storage_engine.h"
// IWYU pragma: no_include <bthread/errno.h>
#include <errno.h> // IWYU pragma: keep
#include <fmt/format.h>
#include <gen_cpp/AgentService_types.h>
#include <rapidjson/document.h>
#include <rapidjson/encodings.h>
#include <rapidjson/prettywriter.h>
#include <rapidjson/stringbuffer.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <thrift/protocol/TDebugProtocol.h>
#include <algorithm>
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/container/detail/std_fwd.hpp>
#include <chrono>
#include <filesystem>
#include <iterator>
#include <list>
#include <mutex>
#include <new>
#include <ostream>
#include <random>
#include <set>
#include <thread>
#include <unordered_set>
#include <utility>
#include "agent/task_worker_pool.h"
#include "common/config.h"
#include "common/logging.h"
#include "common/status.h"
#include "gutil/strings/substitute.h"
#include "io/fs/file_system.h"
#include "io/fs/local_file_system.h"
#include "olap/base_compaction.h"
#include "olap/binlog.h"
#include "olap/cumulative_compaction.h"
#include "olap/data_dir.h"
#include "olap/full_compaction.h"
#include "olap/memtable_flush_executor.h"
#include "olap/olap_common.h"
#include "olap/olap_define.h"
#include "olap/olap_meta.h"
#include "olap/rowset/rowset_meta.h"
#include "olap/rowset/rowset_meta_manager.h"
#include "olap/rowset/unique_rowset_id_generator.h"
#include "olap/schema_cache.h"
#include "olap/segment_loader.h"
#include "olap/single_replica_compaction.h"
#include "olap/tablet_manager.h"
#include "olap/tablet_meta.h"
#include "olap/tablet_meta_manager.h"
#include "olap/task/engine_task.h"
#include "olap/txn_manager.h"
#include "runtime/memory/mem_tracker.h"
#include "runtime/stream_load/stream_load_recorder.h"
#include "util/doris_metrics.h"
#include "util/metrics.h"
#include "util/spinlock.h"
#include "util/stopwatch.hpp"
#include "util/thread.h"
#include "util/threadpool.h"
#include "util/trace.h"
#include "util/uid_util.h"
#include "util/work_thread_pool.hpp"
using std::filesystem::directory_iterator;
using std::filesystem::path;
using std::map;
using std::set;
using std::string;
using std::stringstream;
using std::vector;
namespace doris {
using namespace ErrorCode;
DEFINE_GAUGE_METRIC_PROTOTYPE_2ARG(unused_rowsets_count, MetricUnit::ROWSETS);
static Status _validate_options(const EngineOptions& options) {
if (options.store_paths.empty()) {
return Status::InternalError("store paths is empty");
}
return Status::OK();
}
Status StorageEngine::open() {
RETURN_IF_ERROR(_validate_options(_options));
LOG(INFO) << "starting backend using uid:" << _options.backend_uid.to_string();
RETURN_NOT_OK_STATUS_WITH_WARN(_open(), "open engine failed");
LOG(INFO) << "success to init storage engine.";
return Status::OK();
}
StorageEngine::StorageEngine(const EngineOptions& options)
: _options(options),
_available_storage_medium_type_count(0),
_effective_cluster_id(-1),
_is_all_cluster_id_exist(true),
_stopped(false),
_segcompaction_mem_tracker(std::make_shared<MemTracker>("SegCompaction")),
_segment_meta_mem_tracker(std::make_shared<MemTracker>(
"SegmentMeta", ExecEnv::GetInstance()->experimental_mem_tracker())),
_stop_background_threads_latch(1),
_tablet_manager(new TabletManager(config::tablet_map_shard_size)),
_txn_manager(new TxnManager(config::txn_map_shard_size, config::txn_shard_size)),
_rowset_id_generator(new UniqueRowsetIdGenerator(options.backend_uid)),
_memtable_flush_executor(nullptr),
_calc_delete_bitmap_executor(nullptr),
_default_rowset_type(BETA_ROWSET),
_heartbeat_flags(nullptr),
_stream_load_recorder(nullptr) {
REGISTER_HOOK_METRIC(unused_rowsets_count, [this]() {
// std::lock_guard<std::mutex> lock(_gc_mutex);
return _unused_rowsets.size();
});
_broken_paths = options.broken_paths;
}
StorageEngine::~StorageEngine() {
stop();
_clear();
}
Status StorageEngine::load_data_dirs(const std::vector<DataDir*>& data_dirs) {
std::vector<std::thread> threads;
std::vector<Status> results(data_dirs.size());
for (size_t i = 0; i < data_dirs.size(); ++i) {
threads.emplace_back(
[&results, data_dir = data_dirs[i]](size_t index) {
results[index] = data_dir->load();
if (!results[index].ok()) {
LOG(WARNING) << "io error when init load tables. res=" << results[index]
<< ", data dir=" << data_dir->path();
}
},
i);
}
for (auto& thread : threads) {
thread.join();
}
for (const auto& result : results) {
if (!result.ok()) {
return result;
}
}
return Status::OK();
}
Status StorageEngine::_open() {
// init store_map
RETURN_NOT_OK_STATUS_WITH_WARN(_init_store_map(), "_init_store_map failed");
_effective_cluster_id = config::cluster_id;
RETURN_NOT_OK_STATUS_WITH_WARN(_check_all_root_path_cluster_id(), "fail to check cluster id");
_update_storage_medium_type_count();
RETURN_NOT_OK_STATUS_WITH_WARN(_check_file_descriptor_number(), "check fd number failed");
auto dirs = get_stores<false>();
RETURN_IF_ERROR(load_data_dirs(dirs));
_memtable_flush_executor.reset(new MemTableFlushExecutor());
_memtable_flush_executor->init(dirs);
_calc_delete_bitmap_executor.reset(new CalcDeleteBitmapExecutor());
_calc_delete_bitmap_executor->init();
_parse_default_rowset_type();
return Status::OK();
}
Status StorageEngine::_init_store_map() {
std::vector<DataDir*> tmp_stores;
std::vector<std::thread> threads;
SpinLock error_msg_lock;
std::string error_msg;
for (auto& path : _options.store_paths) {
DataDir* store = new DataDir(path.path, path.capacity_bytes, path.storage_medium,
_tablet_manager.get(), _txn_manager.get());
tmp_stores.emplace_back(store);
threads.emplace_back([store, &error_msg_lock, &error_msg]() {
auto st = store->init();
if (!st.ok()) {
{
std::lock_guard<SpinLock> l(error_msg_lock);
error_msg.append(st.to_string() + ";");
}
LOG(WARNING) << "Store load failed, status=" << st.to_string()
<< ", path=" << store->path();
}
});
}
for (auto& thread : threads) {
thread.join();
}
if (!error_msg.empty()) {
for (auto store : tmp_stores) {
delete store;
}
return Status::InternalError("init path failed, error={}", error_msg);
}
for (auto store : tmp_stores) {
_store_map.emplace(store->path(), store);
}
std::string stream_load_record_path;
if (!tmp_stores.empty()) {
stream_load_record_path = tmp_stores[0]->path();
}
RETURN_NOT_OK_STATUS_WITH_WARN(_init_stream_load_recorder(stream_load_record_path),
"init StreamLoadRecorder failed");
return Status::OK();
}
Status StorageEngine::_init_stream_load_recorder(const std::string& stream_load_record_path) {
LOG(INFO) << "stream load record path: " << stream_load_record_path;
// init stream load record rocksdb
_stream_load_recorder = StreamLoadRecorder::create_unique(stream_load_record_path);
if (_stream_load_recorder == nullptr) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::MemoryAllocFailed("allocate memory for StreamLoadRecorder failed"),
"new StreamLoadRecorder failed");
}
auto st = _stream_load_recorder->init();
if (!st.ok()) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError("open StreamLoadRecorder rocksdb failed, path={}",
stream_load_record_path),
"init StreamLoadRecorder failed");
}
return Status::OK();
}
void StorageEngine::_update_storage_medium_type_count() {
set<TStorageMedium::type> available_storage_medium_types;
std::lock_guard<std::mutex> l(_store_lock);
for (auto& it : _store_map) {
if (it.second->is_used()) {
available_storage_medium_types.insert(it.second->storage_medium());
}
}
_available_storage_medium_type_count = available_storage_medium_types.size();
}
Status StorageEngine::_judge_and_update_effective_cluster_id(int32_t cluster_id) {
if (cluster_id == -1 && _effective_cluster_id == -1) {
// maybe this is a new cluster, cluster id will get from heartbeat message
return Status::OK();
} else if (cluster_id != -1 && _effective_cluster_id == -1) {
_effective_cluster_id = cluster_id;
return Status::OK();
} else if (cluster_id == -1 && _effective_cluster_id != -1) {
// _effective_cluster_id is the right effective cluster id
return Status::OK();
} else {
if (cluster_id != _effective_cluster_id) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::Corruption("multiple cluster ids is not equal. one={}, other={}",
_effective_cluster_id, cluster_id),
"cluster id not equal");
}
}
return Status::OK();
}
template <bool include_unused>
std::vector<DataDir*> StorageEngine::get_stores() {
std::vector<DataDir*> stores;
stores.reserve(_store_map.size());
std::lock_guard<std::mutex> l(_store_lock);
if constexpr (include_unused) {
for (auto& it : _store_map) {
stores.push_back(it.second);
}
} else {
for (auto& it : _store_map) {
if (it.second->is_used()) {
stores.push_back(it.second);
}
}
}
return stores;
}
template std::vector<DataDir*> StorageEngine::get_stores<false>();
template std::vector<DataDir*> StorageEngine::get_stores<true>();
Status StorageEngine::get_all_data_dir_info(std::vector<DataDirInfo>* data_dir_infos,
bool need_update) {
Status res = Status::OK();
data_dir_infos->clear();
MonotonicStopWatch timer;
timer.start();
// 1. update available capacity of each data dir
// get all root path info and construct a path map.
// path -> DataDirInfo
std::map<std::string, DataDirInfo> path_map;
{
std::lock_guard<std::mutex> l(_store_lock);
for (auto& it : _store_map) {
if (need_update) {
RETURN_IF_ERROR(it.second->update_capacity());
}
path_map.emplace(it.first, it.second->get_dir_info());
}
}
// 2. get total tablets' size of each data dir
size_t tablet_count = 0;
_tablet_manager->update_root_path_info(&path_map, &tablet_count);
// 3. update metrics in DataDir
for (auto& path : path_map) {
std::lock_guard<std::mutex> l(_store_lock);
auto data_dir = _store_map.find(path.first);
DCHECK(data_dir != _store_map.end());
data_dir->second->update_local_data_size(path.second.local_used_capacity);
data_dir->second->update_remote_data_size(path.second.remote_used_capacity);
}
// add path info to data_dir_infos
for (auto& entry : path_map) {
data_dir_infos->emplace_back(entry.second);
}
timer.stop();
LOG(INFO) << "get root path info cost: " << timer.elapsed_time() / 1000000
<< " ms. tablet counter: " << tablet_count;
return res;
}
int64_t StorageEngine::get_file_or_directory_size(const std::string& file_path) {
if (!std::filesystem::exists(file_path)) {
return 0;
}
if (!std::filesystem::is_directory(file_path)) {
return std::filesystem::file_size(file_path);
}
int64_t sum_size = 0;
for (const auto& it : std::filesystem::directory_iterator(file_path)) {
sum_size += get_file_or_directory_size(it.path());
}
return sum_size;
}
void StorageEngine::_start_disk_stat_monitor() {
for (auto& it : _store_map) {
it.second->health_check();
}
_update_storage_medium_type_count();
_exit_if_too_many_disks_are_failed();
}
// TODO(lingbin): Should be in EnvPosix?
Status StorageEngine::_check_file_descriptor_number() {
struct rlimit l;
int ret = getrlimit(RLIMIT_NOFILE, &l);
if (ret != 0) {
LOG(WARNING) << "call getrlimit() failed. errno=" << strerror(errno)
<< ", use default configuration instead.";
return Status::OK();
}
if (l.rlim_cur < config::min_file_descriptor_number) {
LOG(ERROR) << "File descriptor number is less than " << config::min_file_descriptor_number
<< ". Please use (ulimit -n) to set a value equal or greater than "
<< config::min_file_descriptor_number;
return Status::Error<ErrorCode::EXCEEDED_LIMIT>(
"file descriptors limit {} is small than {}", l.rlim_cur,
config::min_file_descriptor_number);
}
return Status::OK();
}
Status StorageEngine::_check_all_root_path_cluster_id() {
int32_t cluster_id = -1;
for (auto& it : _store_map) {
int32_t tmp_cluster_id = it.second->cluster_id();
if (it.second->cluster_id_incomplete()) {
_is_all_cluster_id_exist = false;
} else if (tmp_cluster_id == cluster_id) {
// both have right cluster id, do nothing
} else if (cluster_id == -1) {
cluster_id = tmp_cluster_id;
} else {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::Corruption("multiple cluster ids is not equal. one={}, other={}",
cluster_id, tmp_cluster_id),
"cluster id not equal");
}
}
// judge and get effective cluster id
RETURN_IF_ERROR(_judge_and_update_effective_cluster_id(cluster_id));
// write cluster id into cluster_id_path if get effective cluster id success
if (_effective_cluster_id != -1 && !_is_all_cluster_id_exist) {
RETURN_IF_ERROR(set_cluster_id(_effective_cluster_id));
}
return Status::OK();
}
Status StorageEngine::set_cluster_id(int32_t cluster_id) {
std::lock_guard<std::mutex> l(_store_lock);
for (auto& it : _store_map) {
RETURN_IF_ERROR(it.second->set_cluster_id(cluster_id));
}
_effective_cluster_id = cluster_id;
_is_all_cluster_id_exist = true;
return Status::OK();
}
std::vector<DataDir*> StorageEngine::get_stores_for_create_tablet(
TStorageMedium::type storage_medium) {
struct DirInfo {
DataDir* data_dir;
size_t disk_available;
//if disk_available is high, then available_level is small
int available_level;
int tablet_num;
bool operator<(const DirInfo& other) const {
if (available_level != other.available_level) {
return available_level < other.available_level;
}
if (tablet_num != other.tablet_num) {
return tablet_num < other.tablet_num;
}
return data_dir->path_hash() < other.data_dir->path_hash();
}
};
std::map<size_t, int> available_levels;
std::vector<DirInfo> dir_infos;
int next_index = 0;
size_t max_disk_capacity = 0;
{
std::lock_guard<std::mutex> l(_store_lock);
next_index = _store_next_index[storage_medium]++;
if (next_index < 0) {
next_index = 0;
_store_next_index[storage_medium] = next_index + 1;
}
for (auto& it : _store_map) {
DataDir* data_dir = it.second;
if (data_dir->is_used()) {
if (_available_storage_medium_type_count == 1 ||
data_dir->storage_medium() == storage_medium) {
size_t disk_available = data_dir->disk_available();
DirInfo dir_info;
dir_info.data_dir = data_dir;
dir_info.available_level = disk_available;
dir_infos.push_back(dir_info);
available_levels[disk_available] = 0;
size_t disk_capacity = data_dir->disk_capacity();
if (max_disk_capacity < disk_capacity) {
max_disk_capacity = disk_capacity;
}
}
}
}
}
std::vector<DataDir*> stores;
if (dir_infos.empty()) {
return stores;
}
// if two disk available diff not exceeds 20% capacity, then they are the same available level.
size_t same_level_available_diff = std::max<size_t>(max_disk_capacity / 5, 1);
int level = 0;
size_t level_start_available = available_levels.rbegin()->first;
for (auto rit = available_levels.rbegin(); rit != available_levels.rend(); rit++) {
if (level_start_available - rit->first >= same_level_available_diff) {
level_start_available = rit->first;
level++;
}
rit->second = level;
}
for (auto& dir_info : dir_infos) {
dir_info.tablet_num = dir_info.data_dir->tablet_num();
dir_info.available_level = available_levels[dir_info.disk_available];
}
std::sort(dir_infos.begin(), dir_infos.end());
// Suppose there are five data dirs (D1, D2, D3, D4, D5).
// D1/D2/D3 contain 1 tablet, D4/D5 contain 2 tablets.
// If three creating tablets threads simultaneously invoke this function to get stores,
// then the return stores will be as below:
// thread 1: (D1, D2, D3, D4, D5)
// thread 2: (D2, D3, D1, D5, D4)
// thread 3: (D3, D1, D2, D4, D5)
stores.reserve(dir_infos.size());
for (size_t i = 0; i < dir_infos.size();) {
size_t end = i + 1;
while (end < dir_infos.size() && dir_infos[i].tablet_num == dir_infos[end].tablet_num &&
dir_infos[i].available_level == dir_infos[end].available_level) {
end++;
}
// data dirs [i, end) have the same tablet size, round robin range [i, end)
size_t count = end - i;
for (size_t k = 0; k < count; k++) {
size_t index = i + (k + next_index) % count;
stores.push_back(dir_infos[index].data_dir);
}
i = end;
}
return stores;
}
DataDir* StorageEngine::get_store(const std::string& path) {
// _store_map is unchanged, no need to lock
auto it = _store_map.find(path);
if (it == _store_map.end()) {
return nullptr;
}
return it->second;
}
static bool too_many_disks_are_failed(uint32_t unused_num, uint32_t total_num) {
return ((total_num == 0) ||
(unused_num * 100 / total_num > config::max_percentage_of_error_disk));
}
void StorageEngine::_exit_if_too_many_disks_are_failed() {
uint32_t unused_root_path_num = 0;
uint32_t total_root_path_num = 0;
{
// TODO(yingchun): _store_map is only updated in main and ~StorageEngine, maybe we can remove it?
std::lock_guard<std::mutex> l(_store_lock);
if (_store_map.empty()) {
return;
}
for (auto& it : _store_map) {
++total_root_path_num;
if (it.second->is_used()) {
continue;
}
++unused_root_path_num;
}
}
if (too_many_disks_are_failed(unused_root_path_num, total_root_path_num)) {
LOG(FATAL) << "meet too many error disks, process exit. "
<< "max_ratio_allowed=" << config::max_percentage_of_error_disk << "%"
<< ", error_disk_count=" << unused_root_path_num
<< ", total_disk_count=" << total_root_path_num;
exit(0);
}
}
void StorageEngine::stop() {
if (_stopped) {
LOG(WARNING) << "Storage engine is stopped twice.";
return;
}
// trigger the waiting threads
notify_listeners();
{
std::lock_guard<std::mutex> l(_store_lock);
for (auto& store_pair : _store_map) {
store_pair.second->stop_bg_worker();
}
}
_stop_background_threads_latch.count_down();
#define THREAD_JOIN(thread) \
if (thread) { \
thread->join(); \
}
THREAD_JOIN(_compaction_tasks_producer_thread);
THREAD_JOIN(_update_replica_infos_thread);
THREAD_JOIN(_unused_rowset_monitor_thread);
THREAD_JOIN(_garbage_sweeper_thread);
THREAD_JOIN(_disk_stat_monitor_thread);
THREAD_JOIN(_cache_clean_thread);
THREAD_JOIN(_tablet_checkpoint_tasks_producer_thread);
THREAD_JOIN(_async_publish_thread);
THREAD_JOIN(_cold_data_compaction_producer_thread);
THREAD_JOIN(_cooldown_tasks_producer_thread);
#undef THREAD_JOIN
#define THREADS_JOIN(threads) \
for (const auto& thread : threads) { \
if (thread) { \
thread->join(); \
} \
}
THREADS_JOIN(_path_gc_threads);
THREADS_JOIN(_path_scan_threads);
#undef THREADS_JOIN
if (_base_compaction_thread_pool) {
_base_compaction_thread_pool->shutdown();
}
if (_cumu_compaction_thread_pool) {
_cumu_compaction_thread_pool->shutdown();
}
if (_single_replica_compaction_thread_pool) {
_single_replica_compaction_thread_pool->shutdown();
}
if (_seg_compaction_thread_pool) {
_seg_compaction_thread_pool->shutdown();
}
if (_tablet_meta_checkpoint_thread_pool) {
_tablet_meta_checkpoint_thread_pool->shutdown();
}
if (_cold_data_compaction_thread_pool) {
_cold_data_compaction_thread_pool->shutdown();
}
_memtable_flush_executor.reset(nullptr);
_calc_delete_bitmap_executor.reset(nullptr);
_stopped = true;
LOG(INFO) << "Storage engine is stopped.";
}
void StorageEngine::_clear() {
std::lock_guard<std::mutex> l(_store_lock);
for (auto& store_pair : _store_map) {
delete store_pair.second;
store_pair.second = nullptr;
}
_store_map.clear();
}
void StorageEngine::clear_transaction_task(const TTransactionId transaction_id) {
// clear transaction task may not contains partitions ids, we should get partition id from txn manager.
std::vector<int64_t> partition_ids;
StorageEngine::instance()->txn_manager()->get_partition_ids(transaction_id, &partition_ids);
clear_transaction_task(transaction_id, partition_ids);
}
void StorageEngine::clear_transaction_task(const TTransactionId transaction_id,
const std::vector<TPartitionId>& partition_ids) {
LOG(INFO) << "begin to clear transaction task. transaction_id=" << transaction_id;
for (const TPartitionId& partition_id : partition_ids) {
std::map<TabletInfo, RowsetSharedPtr> tablet_infos;
StorageEngine::instance()->txn_manager()->get_txn_related_tablets(
transaction_id, partition_id, &tablet_infos);
// each tablet
for (auto& tablet_info : tablet_infos) {
// should use tablet uid to ensure clean txn correctly
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_info.first.tablet_id,
tablet_info.first.tablet_uid);
// The tablet may be dropped or altered, leave a INFO log and go on process other tablet
if (tablet == nullptr) {
LOG(INFO) << "tablet is no longer exist. tablet_id=" << tablet_info.first.tablet_id
<< ", tablet_uid=" << tablet_info.first.tablet_uid;
continue;
}
static_cast<void>(StorageEngine::instance()->txn_manager()->delete_txn(
partition_id, tablet, transaction_id));
}
}
LOG(INFO) << "finish to clear transaction task. transaction_id=" << transaction_id;
}
Status StorageEngine::start_trash_sweep(double* usage, bool ignore_guard) {
Status res = Status::OK();
std::unique_lock<std::mutex> l(_trash_sweep_lock, std::defer_lock);
if (!l.try_lock()) {
LOG(INFO) << "trash and snapshot sweep is running.";
if (ignore_guard) {
_need_clean_trash.store(true, std::memory_order_relaxed);
}
return res;
}
LOG(INFO) << "start trash and snapshot sweep. is_clean=" << ignore_guard;
const int32_t snapshot_expire = config::snapshot_expire_time_sec;
const int32_t trash_expire = config::trash_file_expire_time_sec;
// the guard space should be lower than storage_flood_stage_usage_percent,
// so here we multiply 0.9
// if ignore_guard is true, set guard_space to 0.
const double guard_space =
ignore_guard ? 0 : config::storage_flood_stage_usage_percent / 100.0 * 0.9;
std::vector<DataDirInfo> data_dir_infos;
RETURN_NOT_OK_STATUS_WITH_WARN(get_all_data_dir_info(&data_dir_infos, false),
"failed to get root path stat info when sweep trash.")
std::sort(data_dir_infos.begin(), data_dir_infos.end(), DataDirInfoLessAvailability());
time_t now = time(nullptr); //获取UTC时间
tm local_tm_now;
local_tm_now.tm_isdst = 0;
if (localtime_r(&now, &local_tm_now) == nullptr) {
return Status::Error<OS_ERROR>("fail to localtime_r time. time={}", now);
}
const time_t local_now = mktime(&local_tm_now); //得到当地日历时间
double tmp_usage = 0.0;
for (DataDirInfo& info : data_dir_infos) {
LOG(INFO) << "Start to sweep path " << info.path;
if (!info.is_used) {
continue;
}
double curr_usage = (double)(info.disk_capacity - info.available) / info.disk_capacity;
tmp_usage = std::max(tmp_usage, curr_usage);
Status curr_res = Status::OK();
auto snapshot_path = fmt::format("{}/{}", info.path, SNAPSHOT_PREFIX);
curr_res = _do_sweep(snapshot_path, local_now, snapshot_expire);
if (!curr_res.ok()) {
LOG(WARNING) << "failed to sweep snapshot. path=" << snapshot_path
<< ", err_code=" << curr_res;
res = curr_res;
}
auto trash_path = fmt::format("{}/{}", info.path, TRASH_PREFIX);
curr_res = _do_sweep(trash_path, local_now, curr_usage > guard_space ? 0 : trash_expire);
if (!curr_res.ok()) {
LOG(WARNING) << "failed to sweep trash. path=" << trash_path
<< ", err_code=" << curr_res;
res = curr_res;
}
}
if (usage != nullptr) {
*usage = tmp_usage; // update usage
}
// clear expire incremental rowset, move deleted tablet to trash
RETURN_IF_ERROR(_tablet_manager->start_trash_sweep());
// clean rubbish transactions
_clean_unused_txns();
// clean unused rowset metas in OlapMeta
_clean_unused_rowset_metas();
// clean unused binlog metas in OlapMeta
_clean_unused_binlog_metas();
// cleand unused delete bitmap for deleted tablet
_clean_unused_delete_bitmap();
// cleand unused pending publish info for deleted tablet
_clean_unused_pending_publish_info();
// clean unused rowsets in remote storage backends
for (auto data_dir : get_stores()) {
data_dir->perform_remote_rowset_gc();
data_dir->perform_remote_tablet_gc();
data_dir->update_trash_capacity();
}
return res;
}
void StorageEngine::_clean_unused_rowset_metas() {
std::vector<RowsetMetaSharedPtr> invalid_rowset_metas;
auto clean_rowset_func = [this, &invalid_rowset_metas](TabletUid tablet_uid, RowsetId rowset_id,
const std::string& meta_str) -> bool {
// return false will break meta iterator, return true to skip this error
RowsetMetaSharedPtr rowset_meta(new RowsetMeta());
bool parsed = rowset_meta->init(meta_str);
if (!parsed) {
LOG(WARNING) << "parse rowset meta string failed for rowset_id:" << rowset_id;
invalid_rowset_metas.push_back(rowset_meta);
return true;
}
if (rowset_meta->tablet_uid() != tablet_uid) {
LOG(WARNING) << "tablet uid is not equal, skip the rowset"
<< ", rowset_id=" << rowset_meta->rowset_id()
<< ", in_put_tablet_uid=" << tablet_uid
<< ", tablet_uid in rowset meta=" << rowset_meta->tablet_uid();
invalid_rowset_metas.push_back(rowset_meta);
return true;
}
TabletSharedPtr tablet = _tablet_manager->get_tablet(rowset_meta->tablet_id());
if (tablet == nullptr) {
// tablet may be dropped
// TODO(cmy): this is better to be a VLOG, because drop table is a very common case.
// leave it as INFO log for observation. Maybe change it in future.
LOG(INFO) << "failed to find tablet " << rowset_meta->tablet_id()
<< " for rowset: " << rowset_meta->rowset_id() << ", tablet may be dropped";
invalid_rowset_metas.push_back(rowset_meta);
return true;
}
if (tablet->tablet_uid() != rowset_meta->tablet_uid()) {
// In this case, we get the tablet using the tablet id recorded in the rowset meta.
// but the uid in the tablet is different from the one recorded in the rowset meta.
// How this happened:
// Replica1 of Tablet A exists on BE1. Because of the clone task, a new replica2 is createed on BE2,
// and then replica1 deleted from BE1. After some time, we created replica again on BE1,
// which will creates a new tablet with the same id but a different uid.
// And in the historical version, when we deleted the replica, we did not delete the corresponding rowset meta,
// thus causing the original rowset meta to remain(with same tablet id but different uid).
LOG(WARNING) << "rowset's tablet uid " << rowset_meta->tablet_uid()
<< " does not equal to tablet uid: " << tablet->tablet_uid();
invalid_rowset_metas.push_back(rowset_meta);
return true;
}
if (rowset_meta->rowset_state() == RowsetStatePB::VISIBLE &&
(!tablet->rowset_meta_is_useful(rowset_meta))) {
LOG(INFO) << "rowset meta is not used any more, remove it. rowset_id="
<< rowset_meta->rowset_id();
invalid_rowset_metas.push_back(rowset_meta);
}
return true;
};
auto data_dirs = get_stores();
for (auto data_dir : data_dirs) {
static_cast<void>(
RowsetMetaManager::traverse_rowset_metas(data_dir->get_meta(), clean_rowset_func));
for (auto& rowset_meta : invalid_rowset_metas) {
static_cast<void>(RowsetMetaManager::remove(
data_dir->get_meta(), rowset_meta->tablet_uid(), rowset_meta->rowset_id()));
}
LOG(INFO) << "remove " << invalid_rowset_metas.size()
<< " invalid rowset meta from dir: " << data_dir->path();
invalid_rowset_metas.clear();
}
}
void StorageEngine::_clean_unused_binlog_metas() {
std::vector<std::string> unused_binlog_key_suffixes;
auto unused_binlog_collector = [this, &unused_binlog_key_suffixes](const std::string& key,
const std::string& value,
bool need_check) -> bool {
if (need_check) {
BinlogMetaEntryPB binlog_meta_pb;
if (UNLIKELY(!binlog_meta_pb.ParseFromString(value))) {
LOG(WARNING) << "parse rowset meta string failed for binlog meta key: " << key;
} else if (_tablet_manager->get_tablet(binlog_meta_pb.tablet_id()) == nullptr) {
LOG(INFO) << "failed to find tablet " << binlog_meta_pb.tablet_id()
<< " for binlog rowset: " << binlog_meta_pb.rowset_id()
<< ", tablet may be dropped";
} else {
return false;
}
}
unused_binlog_key_suffixes.emplace_back(key.substr(kBinlogMetaPrefix.size()));
return true;
};
auto data_dirs = get_stores();
for (auto data_dir : data_dirs) {
static_cast<void>(RowsetMetaManager::traverse_binlog_metas(data_dir->get_meta(),
unused_binlog_collector));
for (const auto& suffix : unused_binlog_key_suffixes) {
static_cast<void>(RowsetMetaManager::remove_binlog(data_dir->get_meta(), suffix));
}
LOG(INFO) << "remove " << unused_binlog_key_suffixes.size()
<< " invalid binlog meta from dir: " << data_dir->path();
unused_binlog_key_suffixes.clear();
}
}
void StorageEngine::_clean_unused_delete_bitmap() {
std::unordered_set<int64_t> removed_tablets;
auto clean_delete_bitmap_func = [this, &removed_tablets](int64_t tablet_id, int64_t version,
const std::string& val) -> bool {
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id);
if (tablet == nullptr) {
if (removed_tablets.insert(tablet_id).second) {
LOG(INFO) << "clean ununsed delete bitmap for deleted tablet, tablet_id: "
<< tablet_id;
}
}
return true;
};
auto data_dirs = get_stores();
for (auto data_dir : data_dirs) {
static_cast<void>(TabletMetaManager::traverse_delete_bitmap(data_dir->get_meta(),
clean_delete_bitmap_func));
for (auto id : removed_tablets) {
static_cast<void>(
TabletMetaManager::remove_old_version_delete_bitmap(data_dir, id, INT64_MAX));
}
LOG(INFO) << "removed invalid delete bitmap from dir: " << data_dir->path()
<< ", deleted tablets size: " << removed_tablets.size();
removed_tablets.clear();
}
}
void StorageEngine::_clean_unused_pending_publish_info() {
std::vector<std::pair<int64_t, int64_t>> removed_infos;
auto clean_pending_publish_info_func = [this, &removed_infos](int64_t tablet_id,
int64_t publish_version,
const string& info) -> bool {
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id);
if (tablet == nullptr) {
removed_infos.emplace_back(tablet_id, publish_version);
}
return true;
};
auto data_dirs = get_stores();
for (auto data_dir : data_dirs) {
static_cast<void>(TabletMetaManager::traverse_pending_publish(
data_dir->get_meta(), clean_pending_publish_info_func));
for (auto& [tablet_id, publish_version] : removed_infos) {
static_cast<void>(TabletMetaManager::remove_pending_publish_info(data_dir, tablet_id,
publish_version));
}
LOG(INFO) << "removed invalid pending publish info from dir: " << data_dir->path()
<< ", deleted pending publish info size: " << removed_infos.size();
removed_infos.clear();
}
}
void StorageEngine::gc_binlogs(const std::unordered_map<int64_t, int64_t>& gc_tablet_infos) {
for (auto [tablet_id, version] : gc_tablet_infos) {
LOG(INFO) << fmt::format("start to gc binlogs for tablet_id: {}, version: {}", tablet_id,
version);
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id);
if (tablet == nullptr) {
LOG(WARNING) << fmt::format("tablet_id: {} not found", tablet_id);
continue;
}
tablet->gc_binlogs(version);
}
}
void StorageEngine::_clean_unused_txns() {
std::set<TabletInfo> tablet_infos;
_txn_manager->get_all_related_tablets(&tablet_infos);
for (auto& tablet_info : tablet_infos) {
TabletSharedPtr tablet =
_tablet_manager->get_tablet(tablet_info.tablet_id, tablet_info.tablet_uid, true);
if (tablet == nullptr) {
// TODO(ygl) : should check if tablet still in meta, it's a improvement
// case 1: tablet still in meta, just remove from memory
// case 2: tablet not in meta store, remove rowset from meta
// currently just remove them from memory
// nullptr to indicate not remove them from meta store
_txn_manager->force_rollback_tablet_related_txns(nullptr, tablet_info.tablet_id,
tablet_info.tablet_uid);
}
}
}
Status StorageEngine::_do_sweep(const std::string& scan_root, const time_t& local_now,
const int32_t expire) {
Status res = Status::OK();
bool exists = true;
RETURN_IF_ERROR(io::global_local_filesystem()->exists(scan_root, &exists));
if (!exists) {
// dir not existed. no need to sweep trash.
return res;
}
int curr_sweep_batch_size = 0;
try {
// Sort pathes by name, that is by delete time.
std::vector<path> sorted_pathes;
std::copy(directory_iterator(scan_root), directory_iterator(),
std::back_inserter(sorted_pathes));
std::sort(sorted_pathes.begin(), sorted_pathes.end());
for (const auto& sorted_path : sorted_pathes) {
string dir_name = sorted_path.filename().string();
string str_time = dir_name.substr(0, dir_name.find('.'));
tm local_tm_create;
local_tm_create.tm_isdst = 0;
if (strptime(str_time.c_str(), "%Y%m%d%H%M%S", &local_tm_create) == nullptr) {
res = Status::Error<OS_ERROR>("fail to strptime time. time={}", str_time);
continue;
}
int32_t actual_expire = expire;
// try get timeout in dir name, the old snapshot dir does not contain timeout
// eg: 20190818221123.3.86400, the 86400 is timeout, in second
size_t pos = dir_name.find('.', str_time.size() + 1);
if (pos != string::npos) {
actual_expire = std::stoi(dir_name.substr(pos + 1));
}
VLOG_TRACE << "get actual expire time " << actual_expire << " of dir: " << dir_name;
string path_name = sorted_path.string();
if (difftime(local_now, mktime(&local_tm_create)) >= actual_expire) {
res = io::global_local_filesystem()->delete_directory(path_name);
if (!res.ok()) {
continue;
}
curr_sweep_batch_size++;
if (config::garbage_sweep_batch_size > 0 &&
curr_sweep_batch_size >= config::garbage_sweep_batch_size) {
curr_sweep_batch_size = 0;
std::this_thread::sleep_for(std::chrono::milliseconds(1));
}
} else {
// Because files are ordered by filename, i.e. by create time, so all the left files are not expired.
break;
}
}
} catch (...) {
res = Status::Error<IO_ERROR>("Exception occur when scan directory. path_desc={}",
scan_root);
}
return res;
}
// invalid rowset type config will return ALPHA_ROWSET for system to run smoothly
void StorageEngine::_parse_default_rowset_type() {
std::string default_rowset_type_config = config::default_rowset_type;
boost::to_upper(default_rowset_type_config);
if (default_rowset_type_config == "BETA") {
_default_rowset_type = BETA_ROWSET;
} else if (default_rowset_type_config == "ALPHA") {
_default_rowset_type = ALPHA_ROWSET;
LOG(WARNING) << "default_rowset_type in be.conf should be set to beta, alpha is not "
"supported any more";
} else {
LOG(FATAL) << "unknown value " << default_rowset_type_config
<< " in default_rowset_type in be.conf";
}
}
void StorageEngine::start_delete_unused_rowset() {
std::vector<RowsetSharedPtr> unused_rowsets_copy;
unused_rowsets_copy.reserve(_unused_rowsets.size());
{
std::lock_guard<std::mutex> lock(_gc_mutex);
for (auto it = _unused_rowsets.begin(); it != _unused_rowsets.end();) {
uint64_t now = UnixSeconds();
auto&& rs = it->second;
if (rs.use_count() == 1 && rs->need_delete_file() &&
// We delay the GC time of this rowset since it's maybe still needed, see #20732
now > rs->delayed_expired_timestamp()) {
evict_querying_rowset(it->second->rowset_id());
// remote rowset data will be reclaimed by `remove_unused_remote_files`
if (rs->is_local()) {
unused_rowsets_copy.push_back(std::move(rs));
}
it = _unused_rowsets.erase(it);
} else {
++it;
}
}
}
for (auto&& rs : unused_rowsets_copy) {
VLOG_NOTICE << "start to remove rowset:" << rs->rowset_id()
<< ", version:" << rs->version();
// delete delete_bitmap of unused rowsets
if (auto tablet = _tablet_manager->get_tablet(rs->rowset_meta()->tablet_id());
tablet && tablet->enable_unique_key_merge_on_write()) {
tablet->tablet_meta()->delete_bitmap().remove({rs->rowset_id(), 0, 0},
{rs->rowset_id(), UINT32_MAX, 0});
}
Status status = rs->remove();
VLOG_NOTICE << "remove rowset:" << rs->rowset_id() << " finished. status:" << status;
}
}
void StorageEngine::add_unused_rowset(RowsetSharedPtr rowset) {
if (rowset == nullptr) {
return;
}
VLOG_NOTICE << "add unused rowset, rowset id:" << rowset->rowset_id()
<< ", version:" << rowset->version();
std::lock_guard<std::mutex> lock(_gc_mutex);
auto it = _unused_rowsets.find(rowset->rowset_id());
if (it == _unused_rowsets.end()) {
rowset->set_need_delete_file();
rowset->close();
_unused_rowsets[rowset->rowset_id()] = std::move(rowset);
}
}
// TODO(zc): refactor this funciton
Status StorageEngine::create_tablet(const TCreateTabletReq& request, RuntimeProfile* profile) {
// Get all available stores, use ref_root_path if the caller specified
std::vector<DataDir*> stores;
{
SCOPED_TIMER(ADD_TIMER(profile, "GetStores"));
stores = get_stores_for_create_tablet(request.storage_medium);
}
if (stores.empty()) {
return Status::Error<CE_CMD_PARAMS_ERROR>(
"there is no available disk that can be used to create tablet.");
}
return _tablet_manager->create_tablet(request, stores, profile);
}
Status StorageEngine::obtain_shard_path(TStorageMedium::type storage_medium, int64_t path_hash,
std::string* shard_path, DataDir** store) {
LOG(INFO) << "begin to process obtain root path. storage_medium=" << storage_medium;
if (shard_path == nullptr) {
return Status::Error<CE_CMD_PARAMS_ERROR>(
"invalid output parameter which is null pointer.");
}
auto stores = get_stores_for_create_tablet(storage_medium);
if (stores.empty()) {
return Status::Error<NO_AVAILABLE_ROOT_PATH>(
"no available disk can be used to create tablet.");
}
*store = nullptr;
if (path_hash != -1) {
for (auto data_dir : stores) {
if (data_dir->path_hash() == path_hash) {
*store = data_dir;
break;
}
}
}
if (*store == nullptr) {
*store = stores[0];
}
uint64_t shard = (*store)->get_shard();
std::stringstream root_path_stream;
root_path_stream << (*store)->path() << "/" << DATA_PREFIX << "/" << shard;
*shard_path = root_path_stream.str();
LOG(INFO) << "success to process obtain root path. path=" << shard_path;
return Status::OK();
}
Status StorageEngine::load_header(const string& shard_path, const TCloneReq& request,
bool restore) {
LOG(INFO) << "begin to process load headers."
<< "tablet_id=" << request.tablet_id << ", schema_hash=" << request.schema_hash;
Status res = Status::OK();
DataDir* store = nullptr;
{
// TODO(zc)
try {
auto store_path =
std::filesystem::path(shard_path).parent_path().parent_path().string();
store = get_store(store_path);
if (store == nullptr) {
return Status::Error<INVALID_ROOT_PATH>("invalid shard path, path={}", shard_path);
}
} catch (...) {
return Status::Error<INVALID_ROOT_PATH>("invalid shard path, path={}", shard_path);
}
}
std::stringstream schema_hash_path_stream;
schema_hash_path_stream << shard_path << "/" << request.tablet_id << "/" << request.schema_hash;
// not surely, reload and restore tablet action call this api
// reset tablet uid here
string header_path = TabletMeta::construct_header_file_path(schema_hash_path_stream.str(),
request.tablet_id);
res = _tablet_manager->load_tablet_from_dir(store, request.tablet_id, request.schema_hash,
schema_hash_path_stream.str(), false, restore);
if (!res.ok()) {
LOG(WARNING) << "fail to process load headers. res=" << res;
return res;
}
LOG(INFO) << "success to process load headers.";
return res;
}
void StorageEngine::register_report_listener(ReportWorker* listener) {
std::lock_guard<std::mutex> l(_report_mtx);
if (std::find(_report_listeners.begin(), _report_listeners.end(), listener) !=
_report_listeners.end()) [[unlikely]] {
return;
}
_report_listeners.push_back(listener);
}
void StorageEngine::deregister_report_listener(ReportWorker* listener) {
std::lock_guard<std::mutex> l(_report_mtx);
if (auto it = std::find(_report_listeners.begin(), _report_listeners.end(), listener);
it != _report_listeners.end()) {
_report_listeners.erase(it);
}
}
void StorageEngine::notify_listeners() {
std::lock_guard<std::mutex> l(_report_mtx);
for (auto& listener : _report_listeners) {
listener->notify();
}
}
bool StorageEngine::notify_listener(std::string_view name) {
bool found = false;
std::lock_guard<std::mutex> l(_report_mtx);
for (auto& listener : _report_listeners) {
if (listener->name() == name) {
listener->notify();
found = true;
}
}
return found;
}
// check whether any unused rowsets's id equal to rowset_id
bool StorageEngine::check_rowset_id_in_unused_rowsets(const RowsetId& rowset_id) {
std::lock_guard<std::mutex> lock(_gc_mutex);
return _unused_rowsets.contains(rowset_id);
}
PendingRowsetGuard StorageEngine::add_pending_rowset(const RowsetWriterContext& ctx) {
if (!ctx.fs || ctx.fs->type() == io::FileSystemType::LOCAL) {
return _pending_local_rowsets.add(ctx.rowset_id);
}
return _pending_remote_rowsets.add(ctx.rowset_id);
}
bool StorageEngine::get_peer_replica_info(int64_t tablet_id, TReplicaInfo* replica,
std::string* token) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id);
if (tablet == nullptr) {
LOG(WARNING) << "tablet is no longer exist: tablet_id=" << tablet_id;
return false;
}
std::unique_lock<std::mutex> lock(_peer_replica_infos_mutex);
if (_peer_replica_infos.count(tablet_id) &&
_peer_replica_infos[tablet_id].replica_id != tablet->replica_id()) {
*replica = _peer_replica_infos[tablet_id];
*token = _token;
return true;
}
return false;
}
bool StorageEngine::should_fetch_from_peer(int64_t tablet_id) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id);
if (tablet == nullptr) {
LOG(WARNING) << "tablet is no longer exist: tablet_id=" << tablet_id;
return false;
}
std::unique_lock<std::mutex> lock(_peer_replica_infos_mutex);
if (_peer_replica_infos.count(tablet_id)) {
return _peer_replica_infos[tablet_id].replica_id != tablet->replica_id();
}
return false;
}
// Return json:
// {
// "CumulativeCompaction": {
// "/home/disk1" : [10001, 10002],
// "/home/disk2" : [10003]
// },
// "BaseCompaction": {
// "/home/disk1" : [10001, 10002],
// "/home/disk2" : [10003]
// }
// }
Status StorageEngine::get_compaction_status_json(std::string* result) {
rapidjson::Document root;
root.SetObject();
std::unique_lock<std::mutex> lock(_tablet_submitted_compaction_mutex);
const std::string& cumu = "CumulativeCompaction";
rapidjson::Value cumu_key;
cumu_key.SetString(cumu.c_str(), cumu.length(), root.GetAllocator());
// cumu
rapidjson::Document path_obj;
path_obj.SetObject();
for (auto& it : _tablet_submitted_cumu_compaction) {
const std::string& dir = it.first->path();
rapidjson::Value path_key;
path_key.SetString(dir.c_str(), dir.length(), path_obj.GetAllocator());
rapidjson::Document arr;
arr.SetArray();
for (auto& tablet_id : it.second) {
rapidjson::Value key;
const std::string& key_str = std::to_string(tablet_id);
key.SetString(key_str.c_str(), key_str.length(), path_obj.GetAllocator());
arr.PushBack(key, root.GetAllocator());
}
path_obj.AddMember(path_key, arr, path_obj.GetAllocator());
}
root.AddMember(cumu_key, path_obj, root.GetAllocator());
// base
const std::string& base = "BaseCompaction";
rapidjson::Value base_key;
base_key.SetString(base.c_str(), base.length(), root.GetAllocator());
rapidjson::Document path_obj2;
path_obj2.SetObject();
for (auto& it : _tablet_submitted_base_compaction) {
const std::string& dir = it.first->path();
rapidjson::Value path_key;
path_key.SetString(dir.c_str(), dir.length(), path_obj2.GetAllocator());
rapidjson::Document arr;
arr.SetArray();
for (auto& tablet_id : it.second) {
rapidjson::Value key;
const std::string& key_str = std::to_string(tablet_id);
key.SetString(key_str.c_str(), key_str.length(), path_obj2.GetAllocator());
arr.PushBack(key, root.GetAllocator());
}
path_obj2.AddMember(path_key, arr, path_obj2.GetAllocator());
}
root.AddMember(base_key, path_obj2, root.GetAllocator());
rapidjson::StringBuffer strbuf;
rapidjson::PrettyWriter<rapidjson::StringBuffer> writer(strbuf);
root.Accept(writer);
*result = std::string(strbuf.GetString());
return Status::OK();
}
void StorageEngine::add_quering_rowset(RowsetSharedPtr rs) {
std::lock_guard<std::mutex> lock(_quering_rowsets_mutex);
_querying_rowsets.emplace(rs->rowset_id(), rs);
}
RowsetSharedPtr StorageEngine::get_quering_rowset(RowsetId rs_id) {
std::lock_guard<std::mutex> lock(_quering_rowsets_mutex);
auto it = _querying_rowsets.find(rs_id);
if (it != _querying_rowsets.end()) {
return it->second;
}
return nullptr;
}
void StorageEngine::evict_querying_rowset(RowsetId rs_id) {
std::lock_guard<std::mutex> lock(_quering_rowsets_mutex);
_querying_rowsets.erase(rs_id);
}
bool StorageEngine::add_broken_path(std::string path) {
std::lock_guard<std::mutex> lock(_broken_paths_mutex);
auto success = _broken_paths.emplace(path).second;
if (success) {
static_cast<void>(_persist_broken_paths());
}
return success;
}
bool StorageEngine::remove_broken_path(std::string path) {
std::lock_guard<std::mutex> lock(_broken_paths_mutex);
auto count = _broken_paths.erase(path);
if (count > 0) {
static_cast<void>(_persist_broken_paths());
}
return count > 0;
}
Status StorageEngine::_persist_broken_paths() {
std::string config_value;
for (const std::string& path : _broken_paths) {
config_value += path + ";";
}
if (config_value.length() > 0) {
auto st = config::set_config("broken_storage_path", config_value, true);
LOG(INFO) << "persist broken_storae_path " << config_value << st;
return st;
}
return Status::OK();
}
bool StorageEngine::_increase_low_priority_task_nums(DataDir* dir) {
if (!config::enable_compaction_priority_scheduling) {
return true;
}
std::lock_guard l(_low_priority_task_nums_mutex);
if (_low_priority_task_nums[dir] < config::low_priority_compaction_task_num_per_disk) {
_low_priority_task_nums[dir]++;
return true;
}
return false;
}
void StorageEngine::_decrease_low_priority_task_nums(DataDir* dir) {
if (config::enable_compaction_priority_scheduling) {
std::lock_guard l(_low_priority_task_nums_mutex);
_low_priority_task_nums[dir]--;
DCHECK(_low_priority_task_nums[dir] >= 0);
}
}
} // namespace doris
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