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72f308235819d4f99546a08c95b62d51ec356bdf
doris/be/src/olap/storage_engine.cpp
Yingchun Lai 72f3082358 [Metrics] Add some metrics for container size in BE (#3246) 
We can observe the workload of BE, and also it's a way to check
whether there is any problem in BE, like some container increase
too large and lead to OOM.

This patch add the following metrics:
```
Name                                   Description
rowset_count_generated_and_in_use      The total count of rowset id generated and in use since BE last start
unused_rowsets_count                   The total count of unused rowset waiting to be GC
broker_count                           The total count of brokers in management
data_stream_receiver_count             The total count of data stream receivers in management
fragment_endpoint_count                The total count of fragment endpoints of data stream in management, should always equal to data_stream_receiver_count
active_scan_context_count              The total count of active scan contexts
plan_fragment_count                    The total count of plan fragments in executing
load_channel_count                     The total count of load channels in management
result_buffer_block_count              The total count of result buffer blocks for queries, each block has a limited queue size (default 1024)
result_block_queue_count               The total count of queues for fragments, each queue has a limited size (default 20, by config::max_memory_sink_batch_count)
routine_load_task_count                The total count of routine load tasks in executing
small_file_cache_count                 The total count of cached small files' digest info
stream_load_pipe_count                 The total count of stream load pipes, each pipe has a limited buffer size (default 1M)
tablet_writer_count                    The total count of tablet writers
brpc_endpoint_stub_count               The total count of brpc endpoints
```
2020-04-25 16:13:39 +08:00

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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"
#include <signal.h>
#include <algorithm>
#include <cstdio>
#include <new>
#include <queue>
#include <set>
#include <random>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/filesystem.hpp>
#include <rapidjson/document.h>
#include <thrift/protocol/TDebugProtocol.h>
#include "env/env.h"
#include "olap/base_compaction.h"
#include "olap/cumulative_compaction.h"
#include "olap/lru_cache.h"
#include "olap/memtable_flush_executor.h"
#include "olap/tablet_meta.h"
#include "olap/tablet_meta_manager.h"
#include "olap/push_handler.h"
#include "olap/reader.h"
#include "olap/rowset/rowset_meta_manager.h"
#include "olap/rowset/alpha_rowset.h"
#include "olap/schema_change.h"
#include "olap/data_dir.h"
#include "olap/utils.h"
#include "olap/rowset/alpha_rowset_meta.h"
#include "olap/rowset/column_data_writer.h"
#include "olap/olap_snapshot_converter.h"
#include "olap/rowset/unique_rowset_id_generator.h"
#include "olap/fs/file_block_manager.h"
#include "util/time.h"
#include "util/doris_metrics.h"
#include "util/pretty_printer.h"
#include "util/file_utils.h"
#include "agent/cgroups_mgr.h"
using apache::thrift::ThriftDebugString;
using boost::filesystem::canonical;
using boost::filesystem::directory_iterator;
using boost::filesystem::path;
using boost::filesystem::recursive_directory_iterator;
using std::back_inserter;
using std::copy;
using std::inserter;
using std::list;
using std::map;
using std::nothrow;
using std::pair;
using std::priority_queue;
using std::set;
using std::set_difference;
using std::string;
using std::stringstream;
using std::vector;
namespace doris {
StorageEngine* StorageEngine::_s_instance = nullptr;
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(const EngineOptions& options, StorageEngine** engine_ptr) {
RETURN_IF_ERROR(_validate_options(options));
LOG(INFO) << "starting backend using uid:" << options.backend_uid.to_string();
std::unique_ptr<StorageEngine> engine(new StorageEngine(options));
auto st = engine->_open();
if (st != OLAP_SUCCESS) {
LOG(WARNING) << "engine open failed, res=" << st;
return Status::InternalError("open engine failed");
}
st = engine->_start_bg_worker();
if (st != OLAP_SUCCESS) {
LOG(WARNING) << "engine start background failed, res=" << st;
return Status::InternalError("open engine failed");
}
*engine_ptr = engine.release();
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),
_index_stream_lru_cache(NULL),
_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),
_block_manager(nullptr),
_default_rowset_type(ALPHA_ROWSET),
_heartbeat_flags(nullptr) {
if (_s_instance == nullptr) {
_s_instance = this;
}
REGISTER_GAUGE_DORIS_METRIC(unused_rowsets_count, [this]() {
MutexLock lock(&_gc_mutex);
return _unused_rowsets.size();
});
}
StorageEngine::~StorageEngine() {
_clear();
}
void StorageEngine::load_data_dirs(const std::vector<DataDir*>& data_dirs) {
std::vector<std::thread> threads;
for (auto data_dir : data_dirs) {
threads.emplace_back([data_dir] {
auto res = data_dir->load();
if (res != OLAP_SUCCESS) {
LOG(WARNING) << "io error when init load tables. res=" << res
<< ", data dir=" << data_dir->path();
// TODO(lingbin): why not exit progress, to force OP to change the conf
}
});
}
for (auto& thread : threads) {
thread.join();
}
}
OLAPStatus StorageEngine::_open() {
// init store_map
RETURN_NOT_OK(_init_store_map());
_effective_cluster_id = config::cluster_id;
RETURN_NOT_OK_LOG(_check_all_root_path_cluster_id(), "fail to check cluster info.");
_update_storage_medium_type_count();
RETURN_NOT_OK(_check_file_descriptor_number());
_index_stream_lru_cache = new_lru_cache(config::index_stream_cache_capacity);
auto dirs = get_stores<false>();
load_data_dirs(dirs);
_memtable_flush_executor.reset(new MemTableFlushExecutor());
_memtable_flush_executor->init(dirs);
fs::BlockManagerOptions bm_opts;
bm_opts.read_only = false;
_block_manager.reset(new fs::FileBlockManager(Env::Default(), std::move(bm_opts)));
_parse_default_rowset_type();
return OLAP_SUCCESS;
}
OLAPStatus StorageEngine::_init_store_map() {
std::vector<DataDir*> tmp_stores;
std::vector<std::thread> threads;
std::atomic<bool> init_error{false};
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, &init_error]() {
auto st = store->init();
if (!st.ok()) {
init_error = true;
LOG(WARNING) << "Store load failed, status="<< st.to_string() << ", path=" << store->path();
}
});
}
for (auto& thread : threads) {
thread.join();
}
if (init_error) {
for (auto store : tmp_stores) {
delete store;
}
return OLAP_ERR_INVALID_ROOT_PATH;
}
for (auto store : tmp_stores) {
_store_map.emplace(store->path(), store);
}
return OLAP_SUCCESS;
}
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();
}
OLAPStatus StorageEngine::_judge_and_update_effective_cluster_id(int32_t cluster_id) {
OLAPStatus res = OLAP_SUCCESS;
if (cluster_id == -1 && _effective_cluster_id == -1) {
// maybe this is a new cluster, cluster id will get from heartbeat message
return res;
} else if (cluster_id != -1 && _effective_cluster_id == -1) {
_effective_cluster_id = cluster_id;
return res;
} else if (cluster_id == -1 && _effective_cluster_id != -1) {
// _effective_cluster_id is the right effective cluster id
return res;
} else {
if (cluster_id != _effective_cluster_id) {
LOG(WARNING) << "multiple cluster ids is not equal. id1=" << _effective_cluster_id
<< " id2=" << cluster_id;
return OLAP_ERR_INVALID_CLUSTER_INFO;
}
}
return res;
}
void StorageEngine::set_store_used_flag(const string& path, bool is_used) {
std::lock_guard<std::mutex> l(_store_lock);
auto it = _store_map.find(path);
if (it == _store_map.end()) {
LOG(WARNING) << "store not exist, path=" << path;
}
it->second->set_is_used(is_used);
_update_storage_medium_type_count();
}
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 (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>();
OLAPStatus StorageEngine::get_all_data_dir_info(vector<DataDirInfo>* data_dir_infos,
bool need_update) {
OLAPStatus res = OLAP_SUCCESS;
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) {
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);
// 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;
}
void StorageEngine::_start_disk_stat_monitor() {
for (auto& it : _store_map) {
it.second->health_check();
}
_update_storage_medium_type_count();
bool some_tablets_were_dropped = _delete_tablets_on_unused_root_path();
// If some tablets were dropped, we should notify disk_state_worker_thread and
// tablet_worker_thread (see TaskWorkerPool) to make them report to FE ASAP.
if (some_tablets_were_dropped) {
trigger_report();
}
}
// TODO(lingbin): Should be in EnvPosix?
OLAPStatus 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 OLAP_SUCCESS;
}
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 OLAP_ERR_TOO_FEW_FILE_DESCRITPROR;
}
return OLAP_SUCCESS;
}
OLAPStatus 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 (tmp_cluster_id == -1) {
_is_all_cluster_id_exist = false;
} else if (tmp_cluster_id == cluster_id) {
// both hava right cluster id, do nothing
} else if (cluster_id == -1) {
cluster_id = tmp_cluster_id;
} else {
LOG(WARNING) << "multiple cluster ids is not equal. one=" << cluster_id
<< ", other=" << tmp_cluster_id;
return OLAP_ERR_INVALID_CLUSTER_INFO;
}
}
// judge and get effective cluster id
OLAPStatus res = OLAP_SUCCESS;
RETURN_NOT_OK(_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) {
set_cluster_id(_effective_cluster_id);
}
return res;
}
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) {
std::vector<DataDir*> stores;
{
std::lock_guard<std::mutex> l(_store_lock);
for (auto& it : _store_map) {
if (it.second->is_used()) {
if (_available_storage_medium_type_count == 1
|| it.second->storage_medium() == storage_medium) {
stores.push_back(it.second);
}
}
}
}
// TODO(lingbin): should it be a global util func?
std::random_device rd;
srand(rd());
std::random_shuffle(stores.begin(), stores.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 == std::end(_store_map)) {
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));
}
bool StorageEngine::_delete_tablets_on_unused_root_path() {
vector<TabletInfo> tablet_info_vec;
uint32_t unused_root_path_num = 0;
uint32_t total_root_path_num = 0;
std::lock_guard<std::mutex> l(_store_lock);
if (_store_map.size() == 0) {
return false;
}
for (auto& it : _store_map) {
++total_root_path_num;
if (it.second->is_used()) {
continue;
}
it.second->clear_tablets(&tablet_info_vec);
++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);
}
_tablet_manager->drop_tablets_on_error_root_path(tablet_info_vec);
// If tablet_info_vec is not empty, means we have dropped some tablets.
return !tablet_info_vec.empty();
}
void StorageEngine::_clear() {
SAFE_DELETE(_index_stream_lru_cache);
std::lock_guard<std::mutex> l(_store_lock);
for (auto& store_pair : _store_map) {
store_pair.second->stop_bg_worker();
delete store_pair.second;
store_pair.second = nullptr;
}
_store_map.clear();
_stop_bg_worker = true;
}
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 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.schema_hash, 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
<< ", schema_hash=" << tablet_info.first.schema_hash
<< ", tablet_uid=" << tablet_info.first.tablet_uid;
continue;
}
StorageEngine::instance()->txn_manager()->delete_txn(partition_id, tablet, transaction_id);
}
}
LOG(INFO) << "finish to clear transaction task. transaction_id=" << transaction_id;
}
void StorageEngine::_start_clean_fd_cache() {
VLOG(10) << "start clean file descritpor cache";
FileHandler::get_fd_cache()->prune();
VLOG(10) << "end clean file descritpor cache";
}
void StorageEngine::_perform_cumulative_compaction(DataDir* data_dir) {
TabletSharedPtr best_tablet = _tablet_manager->find_best_tablet_to_compaction(
CompactionType::CUMULATIVE_COMPACTION, data_dir);
if (best_tablet == nullptr) {
return;
}
DorisMetrics::cumulative_compaction_request_total.increment(1);
CumulativeCompaction cumulative_compaction(best_tablet);
OLAPStatus res = cumulative_compaction.compact();
if (res != OLAP_SUCCESS) {
best_tablet->set_last_cumu_compaction_failure_time(UnixMillis());
if (res != OLAP_ERR_CUMULATIVE_NO_SUITABLE_VERSIONS) {
DorisMetrics::cumulative_compaction_request_failed.increment(1);
LOG(WARNING) << "failed to do cumulative compaction. res=" << res
<< ", table=" << best_tablet->full_name();
}
return;
}
best_tablet->set_last_cumu_compaction_failure_time(0);
}
void StorageEngine::_perform_base_compaction(DataDir* data_dir) {
TabletSharedPtr best_tablet = _tablet_manager->find_best_tablet_to_compaction(
CompactionType::BASE_COMPACTION, data_dir);
if (best_tablet == nullptr) {
return;
}
DorisMetrics::base_compaction_request_total.increment(1);
BaseCompaction base_compaction(best_tablet);
OLAPStatus res = base_compaction.compact();
if (res != OLAP_SUCCESS) {
best_tablet->set_last_base_compaction_failure_time(UnixMillis());
if (res != OLAP_ERR_BE_NO_SUITABLE_VERSION) {
DorisMetrics::base_compaction_request_failed.increment(1);
LOG(WARNING) << "failed to init base compaction. res=" << res
<< ", table=" << best_tablet->full_name();
}
return;
}
best_tablet->set_last_base_compaction_failure_time(0);
}
void StorageEngine::get_cache_status(rapidjson::Document* document) const {
return _index_stream_lru_cache->get_cache_status(document);
}
OLAPStatus StorageEngine::_start_trash_sweep(double* usage) {
OLAPStatus res = OLAP_SUCCESS;
LOG(INFO) << "start trash and snapshot sweep.";
const int32_t snapshot_expire = config::snapshot_expire_time_sec;
const int32_t trash_expire = config::trash_file_expire_time_sec;
const double guard_space = config::storage_flood_stage_usage_percent / 100.0;
std::vector<DataDirInfo> data_dir_infos;
RETURN_NOT_OK_LOG(get_all_data_dir_info(&data_dir_infos, false),
"failed to get root path stat info when sweep trash.")
time_t now = time(nullptr); //获取UTC时间
tm local_tm_now;
if (localtime_r(&now, &local_tm_now) == nullptr) {
LOG(WARNING) << "fail to localtime_r time. time=" << now;
return OLAP_ERR_OS_ERROR;
}
const time_t local_now = mktime(&local_tm_now); //得到当地日历时间
for (DataDirInfo& info : data_dir_infos) {
if (!info.is_used) {
continue;
}
double curr_usage = (double) (info.disk_capacity - info.available) / info.disk_capacity;
*usage = *usage > curr_usage ? *usage : curr_usage;
OLAPStatus curr_res = OLAP_SUCCESS;
string snapshot_path = info.path + SNAPSHOT_PREFIX;
curr_res = _do_sweep(snapshot_path, local_now, snapshot_expire);
if (curr_res != OLAP_SUCCESS) {
LOG(WARNING) << "failed to sweep snapshot. path=" << snapshot_path
<< ", err_code=" << curr_res;
res = curr_res;
}
string trash_path = info.path + TRASH_PREFIX;
curr_res = _do_sweep(trash_path, local_now,
curr_usage > guard_space ? 0 : trash_expire);
if (curr_res != OLAP_SUCCESS) {
LOG(WARNING) << "failed to sweep trash. [path=%s" << trash_path
<< ", err_code=" << curr_res;
res = curr_res;
}
}
// clear expire incremental rowset, move deleted tablet to trash
_tablet_manager->start_trash_sweep();
// clean rubbish transactions
_clean_unused_txns();
// clean unused rowset metas in OlapMeta
_clean_unused_rowset_metas();
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 {
RowsetMetaSharedPtr rowset_meta(new AlphaRowsetMeta());
bool parsed = rowset_meta->init(meta_str);
if (!parsed) {
LOG(WARNING) << "parse rowset meta string failed for rowset_id:" << rowset_id;
// return false will break meta iterator, return true to skip this error
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();
return true;
}
TabletSharedPtr tablet = _tablet_manager->get_tablet(rowset_meta->tablet_id(), rowset_meta->tablet_schema_hash(), tablet_uid);
if (tablet == nullptr) {
return true;
}
if (rowset_meta->rowset_state() == RowsetStatePB::VISIBLE && (!tablet->rowset_meta_is_useful(rowset_meta))) {
LOG(INFO) << "rowset meta is useless any more, remote 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) {
RowsetMetaManager::traverse_rowset_metas(data_dir->get_meta(), clean_rowset_func);
for (auto& rowset_meta : invalid_rowset_metas) {
RowsetMetaManager::remove(data_dir->get_meta(), rowset_meta->tablet_uid(), rowset_meta->rowset_id());
}
invalid_rowset_metas.clear();
}
}
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.schema_hash, 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.schema_hash,
tablet_info.tablet_uid);
}
}
}
OLAPStatus StorageEngine::_do_sweep(
const string& scan_root, const time_t& local_now, const int32_t expire) {
OLAPStatus res = OLAP_SUCCESS;
if (!FileUtils::check_exist(scan_root)) {
// dir not existed. no need to sweep trash.
return res;
}
try {
path boost_scan_root(scan_root);
directory_iterator item(boost_scan_root);
directory_iterator item_end;
for (; item != item_end; ++item) {
string path_name = item->path().string();
string dir_name = item->path().filename().string();
string str_time = dir_name.substr(0, dir_name.find('.'));
tm local_tm_create;
if (strptime(str_time.c_str(), "%Y%m%d%H%M%S", &local_tm_create) == nullptr) {
LOG(WARNING) << "fail to strptime time. [time=" << str_time << "]";
res = OLAP_ERR_OS_ERROR;
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(10) << "get actual expire time " << actual_expire << " of dir: " << dir_name;
if (difftime(local_now, mktime(&local_tm_create)) >= actual_expire) {
Status ret = FileUtils::remove_all(path_name);
if (!ret.ok()) {
LOG(WARNING) << "fail to remove file or directory. path=" << path_name
<< ", error=" << ret.to_string();
res = OLAP_ERR_OS_ERROR;
continue;
}
}
}
} catch (...) {
LOG(WARNING) << "Exception occur when scan directory. path=" << scan_root;
res = OLAP_ERR_IO_ERROR;
}
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 {
_default_rowset_type = ALPHA_ROWSET;
}
}
void StorageEngine::start_delete_unused_rowset() {
MutexLock lock(&_gc_mutex);
for (auto it = _unused_rowsets.begin(); it != _unused_rowsets.end();) {
if (it->second.use_count() != 1) {
++it;
} else if (it->second->need_delete_file()) {
VLOG(3) << "start to remove rowset:" << it->second->rowset_id()
<< ", version:" << it->second->version().first << "-"
<< it->second->version().second;
OLAPStatus status = it->second->remove();
VLOG(3) << "remove rowset:" << it->second->rowset_id()
<< " finished. status:" << status;
it = _unused_rowsets.erase(it);
}
}
}
void StorageEngine::add_unused_rowset(RowsetSharedPtr rowset) {
if (rowset == nullptr) {
return;
}
VLOG(3) << "add unused rowset, rowset id:" << rowset->rowset_id()
<< ", version:" << rowset->version().first << "-" << rowset->version().second
<< ", unique id:" << rowset->unique_id();
auto rowset_id = rowset->rowset_id().to_string();
MutexLock lock(&_gc_mutex);
auto it = _unused_rowsets.find(rowset_id);
if (it == _unused_rowsets.end()) {
rowset->set_need_delete_file();
rowset->close();
_unused_rowsets[rowset_id] = rowset;
release_rowset_id(rowset->rowset_id());
}
}
// TODO(zc): refactor this funciton
OLAPStatus StorageEngine::create_tablet(const TCreateTabletReq& request) {
// Get all available stores, use ref_root_path if the caller specified
std::vector<DataDir*> stores;
stores = get_stores_for_create_tablet(request.storage_medium);
if (stores.empty()) {
LOG(WARNING) << "there is no available disk that can be used to create tablet.";
return OLAP_ERR_CE_CMD_PARAMS_ERROR;
}
return _tablet_manager->create_tablet(request, stores);
}
OLAPStatus StorageEngine::recover_tablet_until_specfic_version(
const TRecoverTabletReq& recover_tablet_req) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(recover_tablet_req.tablet_id,
recover_tablet_req.schema_hash);
if (tablet == nullptr) { return OLAP_ERR_TABLE_NOT_FOUND; }
RETURN_NOT_OK(tablet->recover_tablet_until_specfic_version(recover_tablet_req.version,
recover_tablet_req.version_hash));
return OLAP_SUCCESS;
}
OLAPStatus StorageEngine::obtain_shard_path(
TStorageMedium::type storage_medium, std::string* shard_path, DataDir** store) {
LOG(INFO) << "begin to process obtain root path. storage_medium=" << storage_medium;
if (shard_path == NULL) {
LOG(WARNING) << "invalid output parameter which is null pointer.";
return OLAP_ERR_CE_CMD_PARAMS_ERROR;
}
auto stores = get_stores_for_create_tablet(storage_medium);
if (stores.empty()) {
LOG(WARNING) << "no available disk can be used to create tablet.";
return OLAP_ERR_NO_AVAILABLE_ROOT_PATH;
}
OLAPStatus res = OLAP_SUCCESS;
uint64_t shard = 0;
res = stores[0]->get_shard(&shard);
if (res != OLAP_SUCCESS) {
LOG(WARNING) << "fail to get root path shard. res=" << res;
return res;
}
stringstream root_path_stream;
root_path_stream << stores[0]->path() << DATA_PREFIX << "/" << shard;
*shard_path = root_path_stream.str();
*store = stores[0];
LOG(INFO) << "success to process obtain root path. path=" << shard_path;
return res;
}
OLAPStatus StorageEngine::load_header(
const string& shard_path,
const TCloneReq& request) {
LOG(INFO) << "begin to process load headers."
<< "tablet_id=" << request.tablet_id
<< ", schema_hash=" << request.schema_hash;
OLAPStatus res = OLAP_SUCCESS;
DataDir* store = nullptr;
{
// TODO(zc)
try {
auto store_path =
boost::filesystem::path(shard_path).parent_path().parent_path().string();
store = get_store(store_path);
if (store == nullptr) {
LOG(WARNING) << "invalid shard path, path=" << shard_path;
return OLAP_ERR_INVALID_ROOT_PATH;
}
} catch (...) {
LOG(WARNING) << "invalid shard path, path=" << shard_path;
return OLAP_ERR_INVALID_ROOT_PATH;
}
}
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 = TabletMeta::reset_tablet_uid(header_path);
if (res != OLAP_SUCCESS) {
LOG(WARNING) << "fail reset tablet uid file path = " << header_path
<< " res=" << res;
return res;
}
res = _tablet_manager->load_tablet_from_dir(
store,
request.tablet_id, request.schema_hash,
schema_hash_path_stream.str(), false);
if (res != OLAP_SUCCESS) {
LOG(WARNING) << "fail to process load headers. res=" << res;
return res;
}
LOG(INFO) << "success to process load headers.";
return res;
}
OLAPStatus StorageEngine::execute_task(EngineTask* task) {
// 1. add wlock to related tablets
// 2. do prepare work
// 3. release wlock
{
vector<TabletInfo> tablet_infos;
task->get_related_tablets(&tablet_infos);
sort(tablet_infos.begin(), tablet_infos.end());
vector<TabletSharedPtr> related_tablets;
for (TabletInfo& tablet_info : tablet_infos) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(
tablet_info.tablet_id, tablet_info.schema_hash);
if (tablet != nullptr) {
related_tablets.push_back(tablet);
tablet->obtain_header_wrlock();
} else {
LOG(WARNING) << "could not get tablet before prepare tabletid: "
<< tablet_info.tablet_id;
}
}
// add write lock to all related tablets
OLAPStatus prepare_status = task->prepare();
for (TabletSharedPtr& tablet : related_tablets) {
tablet->release_header_lock();
}
if (prepare_status != OLAP_SUCCESS) {
return prepare_status;
}
}
// do execute work without lock
OLAPStatus exec_status = task->execute();
if (exec_status != OLAP_SUCCESS) {
return exec_status;
}
// 1. add wlock to related tablets
// 2. do finish work
// 3. release wlock
{
vector<TabletInfo> tablet_infos;
// related tablets may be changed after execute task, so that get them here again
task->get_related_tablets(&tablet_infos);
sort(tablet_infos.begin(), tablet_infos.end());
vector<TabletSharedPtr> related_tablets;
for (TabletInfo& tablet_info : tablet_infos) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(
tablet_info.tablet_id, tablet_info.schema_hash);
if (tablet != nullptr) {
related_tablets.push_back(tablet);
tablet->obtain_header_wrlock();
} else {
LOG(WARNING) << "could not get tablet before finish tabletid: "
<< tablet_info.tablet_id;
}
}
// add write lock to all related tablets
OLAPStatus fin_status = task->finish();
for (TabletSharedPtr& tablet : related_tablets) {
tablet->release_header_lock();
}
return fin_status;
}
}
// check whether any unused rowsets's id equal to rowset_id
bool StorageEngine::check_rowset_id_in_unused_rowsets(const RowsetId& rowset_id) {
MutexLock lock(&_gc_mutex);
auto search = _unused_rowsets.find(rowset_id.to_string());
return search != _unused_rowsets.end();
}
} // namespace doris
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