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doris/be/src/olap/data_dir.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/data_dir.h"
#include <ctype.h>
#include <mntent.h>
#include <stdio.h>
#include <sys/file.h>
#include <sys/statfs.h>
#include <utime.h>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/trim.hpp>
#include <boost/filesystem.hpp>
#include <boost/interprocess/sync/file_lock.hpp>
#include <fstream>
#include <set>
#include <sstream>
#include "env/env.h"
#include "gutil/strings/substitute.h"
#include "olap/file_helper.h"
#include "olap/olap_define.h"
#include "olap/olap_snapshot_converter.h"
#include "olap/rowset/alpha_rowset_meta.h"
#include "olap/rowset/rowset_factory.h"
#include "olap/rowset/rowset_meta_manager.h"
#include "olap/storage_engine.h"
#include "olap/tablet_meta_manager.h"
#include "olap/utils.h" // for check_dir_existed
#include "service/backend_options.h"
#include "util/errno.h"
#include "util/file_utils.h"
#include "util/monotime.h"
#include "util/string_util.h"
using strings::Substitute;
namespace doris {
DEFINE_GAUGE_METRIC_PROTOTYPE_5ARG(disks_total_capacity, MetricUnit::BYTES);
DEFINE_GAUGE_METRIC_PROTOTYPE_5ARG(disks_avail_capacity, MetricUnit::BYTES);
DEFINE_GAUGE_METRIC_PROTOTYPE_5ARG(disks_data_used_capacity, MetricUnit::BYTES);
DEFINE_GAUGE_METRIC_PROTOTYPE_5ARG(disks_state, MetricUnit::BYTES);
static const char* const kMtabPath = "/etc/mtab";
static const char* const kTestFilePath = "/.testfile";
DataDir::DataDir(const std::string& path, int64_t capacity_bytes,
TStorageMedium::type storage_medium, TabletManager* tablet_manager,
TxnManager* txn_manager)
: _path(path),
_capacity_bytes(capacity_bytes),
_available_bytes(0),
_disk_capacity_bytes(0),
_storage_medium(storage_medium),
_is_used(false),
_tablet_manager(tablet_manager),
_txn_manager(txn_manager),
_cluster_id(-1),
_to_be_deleted(false),
_current_shard(0),
_meta(nullptr) {
_data_dir_metric_entity = DorisMetrics::instance()->metric_registry()->register_entity(std::string("data_dir.") + path, {{"path", path}});
METRIC_REGISTER(_data_dir_metric_entity, disks_total_capacity);
METRIC_REGISTER(_data_dir_metric_entity, disks_avail_capacity);
METRIC_REGISTER(_data_dir_metric_entity, disks_data_used_capacity);
METRIC_REGISTER(_data_dir_metric_entity, disks_state);
}
DataDir::~DataDir() {
DorisMetrics::instance()->metric_registry()->deregister_entity(std::string("data_dir.") + _path);
delete _id_generator;
delete _meta;
}
Status DataDir::init() {
if (!FileUtils::check_exist(_path)) {
RETURN_NOT_OK_STATUS_WITH_WARN(Status::IOError(Substitute("opendir failed, path=$0", _path)),
"check file exist failed");
}
RETURN_NOT_OK_STATUS_WITH_WARN(update_capacity(), "update_capacity failed");
RETURN_NOT_OK_STATUS_WITH_WARN(_init_cluster_id(), "_init_cluster_id failed");
RETURN_NOT_OK_STATUS_WITH_WARN(_init_capacity(), "_init_capacity failed");
RETURN_NOT_OK_STATUS_WITH_WARN(_init_file_system(), "_init_file_system failed");
RETURN_NOT_OK_STATUS_WITH_WARN(_init_meta(), "_init_meta failed");
_is_used = true;
return Status::OK();
}
void DataDir::stop_bg_worker() {
_stop_bg_worker = true;
_cv.notify_one();
}
Status DataDir::_init_cluster_id() {
std::string cluster_id_path = _path + CLUSTER_ID_PREFIX;
if (access(cluster_id_path.c_str(), F_OK) != 0) {
int fd = open(cluster_id_path.c_str(), O_RDWR | O_CREAT,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
if (fd < 0 || close(fd) < 0) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("failed to create cluster id file $0, err=$1",
cluster_id_path, errno_to_string(errno))),
"create file failed");
}
}
// obtain lock of all cluster id paths
FILE* fp = NULL;
fp = fopen(cluster_id_path.c_str(), "r+b");
if (fp == NULL) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("failed to open cluster id file $0", cluster_id_path)),
"open file failed");
}
int lock_res = flock(fp->_fileno, LOCK_EX | LOCK_NB);
if (lock_res < 0) {
fclose(fp);
fp = NULL;
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("failed to flock cluster id file $0", cluster_id_path)),
"flock file failed");
}
// obtain cluster id of all root paths
auto st = _read_cluster_id(cluster_id_path, &_cluster_id);
fclose(fp);
return st;
}
Status DataDir::_read_cluster_id(const std::string& cluster_id_path, int32_t* cluster_id) {
int32_t tmp_cluster_id = -1;
std::fstream fs(cluster_id_path.c_str(), std::fstream::in);
if (!fs.is_open()) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("failed to open cluster id file $0", cluster_id_path)),
"open file failed");
}
fs >> tmp_cluster_id;
fs.close();
if (tmp_cluster_id == -1 && (fs.rdstate() & std::fstream::eofbit) != 0) {
*cluster_id = -1;
} else if (tmp_cluster_id >= 0 && (fs.rdstate() & std::fstream::eofbit) != 0) {
*cluster_id = tmp_cluster_id;
} else {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::Corruption(
Substitute("cluster id file $0 is corrupt. [id=$1 eofbit=$2 failbit=$3 badbit=$4]",
cluster_id_path, tmp_cluster_id, fs.rdstate() & std::fstream::eofbit,
fs.rdstate() & std::fstream::failbit, fs.rdstate() & std::fstream::badbit)),
"file content is error");
}
return Status::OK();
}
Status DataDir::_init_capacity() {
boost::filesystem::path boost_path = _path;
int64_t disk_capacity = boost::filesystem::space(boost_path).capacity;
if (_capacity_bytes == -1) {
_capacity_bytes = disk_capacity;
} else if (_capacity_bytes > disk_capacity) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::InvalidArgument(
Substitute("root path $0's capacity $1 should not larger than disk capacity $2",
_path, _capacity_bytes, disk_capacity)),
"init capacity failed");
}
std::string data_path = _path + DATA_PREFIX;
if (!FileUtils::check_exist(data_path) && !FileUtils::create_dir(data_path).ok()) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("failed to create data root path $0", data_path)),
"check_exist failed");
}
return Status::OK();
}
Status DataDir::_init_file_system() {
struct stat s;
if (stat(_path.c_str(), &s) != 0) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(
Substitute("stat file $0 failed, err=$1", _path, errno_to_string(errno))),
"stat file failed");
}
dev_t mount_device;
if ((s.st_mode & S_IFMT) == S_IFBLK) {
mount_device = s.st_rdev;
} else {
mount_device = s.st_dev;
}
FILE* mount_tablet = nullptr;
if ((mount_tablet = setmntent(kMtabPath, "r")) == NULL) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(
Substitute("setmntent file $0 failed, err=$1", _path, errno_to_string(errno))),
"setmntent file failed");
}
bool is_find = false;
struct mntent* mount_entry = NULL;
struct mntent ent;
char buf[1024];
while ((mount_entry = getmntent_r(mount_tablet, &ent, buf, sizeof(buf))) != NULL) {
if (strcmp(_path.c_str(), mount_entry->mnt_dir) == 0 ||
strcmp(_path.c_str(), mount_entry->mnt_fsname) == 0) {
is_find = true;
break;
}
if (stat(mount_entry->mnt_fsname, &s) == 0 && s.st_rdev == mount_device) {
is_find = true;
break;
}
if (stat(mount_entry->mnt_dir, &s) == 0 && s.st_dev == mount_device) {
is_find = true;
break;
}
}
endmntent(mount_tablet);
if (!is_find) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("file system $0 not found", _path)),
"find file system failed");
}
_file_system = mount_entry->mnt_fsname;
return Status::OK();
}
Status DataDir::_init_meta() {
// init path hash
_path_hash = hash_of_path(BackendOptions::get_localhost(), _path);
LOG(INFO) << "path: " << _path << ", hash: " << _path_hash;
// init meta
_meta = new (std::nothrow) OlapMeta(_path);
if (_meta == nullptr) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::MemoryAllocFailed("allocate memory for OlapMeta failed"),
"new OlapMeta failed");
}
OLAPStatus res = _meta->init();
if (res != OLAP_SUCCESS) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(Substitute("open rocksdb failed, path=$0", _path)),
"init OlapMeta failed");
}
return Status::OK();
}
Status DataDir::set_cluster_id(int32_t cluster_id) {
if (_cluster_id != -1) {
if (_cluster_id == cluster_id) {
return Status::OK();
}
LOG(ERROR) << "going to set cluster id to already assigned store, cluster_id="
<< _cluster_id << ", new_cluster_id=" << cluster_id;
return Status::InternalError("going to set cluster id to already assigned store");
}
return _write_cluster_id_to_path(_cluster_id_path(), cluster_id);
}
Status DataDir::_write_cluster_id_to_path(const std::string& path, int32_t cluster_id) {
std::fstream fs(path.c_str(), std::fstream::out);
if (!fs.is_open()) {
LOG(WARNING) << "fail to open cluster id path. path=" << path;
return Status::InternalError("IO Error");
}
fs << cluster_id;
fs.close();
return Status::OK();
}
void DataDir::health_check() {
// check disk
if (_is_used) {
OLAPStatus res = OLAP_SUCCESS;
if ((res = _read_and_write_test_file()) != OLAP_SUCCESS) {
LOG(WARNING) << "store read/write test file occur IO Error. path=" << _path;
if (is_io_error(res)) {
_is_used = false;
}
}
}
disks_state.set_value(_is_used ? 1 : 0);
}
OLAPStatus DataDir::_read_and_write_test_file() {
std::string test_file = _path + kTestFilePath;
return read_write_test_file(test_file);;
}
OLAPStatus DataDir::get_shard(uint64_t* shard) {
std::stringstream shard_path_stream;
uint32_t next_shard = 0;
{
std::lock_guard<std::mutex> l(_mutex);
next_shard = _current_shard;
_current_shard = (_current_shard + 1) % MAX_SHARD_NUM;
}
shard_path_stream << _path << DATA_PREFIX << "/" << next_shard;
std::string shard_path = shard_path_stream.str();
if (!FileUtils::check_exist(shard_path)) {
RETURN_WITH_WARN_IF_ERROR(FileUtils::create_dir(shard_path), OLAP_ERR_CANNOT_CREATE_DIR,
"fail to create path. path=" + shard_path);
}
*shard = next_shard;
return OLAP_SUCCESS;
}
void DataDir::register_tablet(Tablet* tablet) {
TabletInfo tablet_info(tablet->tablet_id(), tablet->schema_hash(), tablet->tablet_uid());
std::lock_guard<std::mutex> l(_mutex);
_tablet_set.emplace(std::move(tablet_info));
}
void DataDir::deregister_tablet(Tablet* tablet) {
TabletInfo tablet_info(tablet->tablet_id(), tablet->schema_hash(), tablet->tablet_uid());
std::lock_guard<std::mutex> l(_mutex);
_tablet_set.erase(tablet_info);
}
void DataDir::clear_tablets(std::vector<TabletInfo>* tablet_infos) {
std::lock_guard<std::mutex> l(_mutex);
tablet_infos->insert(tablet_infos->end(), _tablet_set.begin(), _tablet_set.end());
_tablet_set.clear();
}
std::string DataDir::get_absolute_shard_path(int64_t shard_id) {
return Substitute("$0$1/$2", _path, DATA_PREFIX, shard_id);
}
std::string DataDir::get_absolute_tablet_path(int64_t shard_id, int64_t tablet_id,
int32_t schema_hash) {
return Substitute("$0/$1/$2", get_absolute_shard_path(shard_id), tablet_id, schema_hash);
}
void DataDir::find_tablet_in_trash(int64_t tablet_id, std::vector<std::string>* paths) {
// path: /root_path/trash/time_label/tablet_id/schema_hash
std::string trash_path = _path + TRASH_PREFIX;
std::vector<std::string> sub_dirs;
FileUtils::list_files(Env::Default(), trash_path, &sub_dirs);
for (auto& sub_dir : sub_dirs) {
// sub dir is time_label
std::string sub_path = trash_path + "/" + sub_dir;
if (!FileUtils::is_dir(sub_path)) {
continue;
}
std::string tablet_path = sub_path + "/" + std::to_string(tablet_id);
bool exist = FileUtils::check_exist(tablet_path);
if (exist) {
paths->emplace_back(std::move(tablet_path));
}
}
}
std::string DataDir::get_root_path_from_schema_hash_path_in_trash(
const std::string& schema_hash_dir_in_trash) {
boost::filesystem::path schema_hash_path_in_trash(schema_hash_dir_in_trash);
return schema_hash_path_in_trash.parent_path()
.parent_path()
.parent_path()
.parent_path()
.string();
}
OLAPStatus DataDir::_clean_unfinished_converting_data() {
auto clean_unifinished_tablet_meta_func = [this](int64_t tablet_id, int32_t schema_hash,
const std::string& value) -> bool {
TabletMetaManager::remove(this, tablet_id, schema_hash, HEADER_PREFIX);
LOG(INFO) << "successfully clean temp tablet meta for tablet=" << tablet_id << "."
<< schema_hash << "from data dir: " << _path;
return true;
};
OLAPStatus clean_unfinished_meta_status = TabletMetaManager::traverse_headers(
_meta, clean_unifinished_tablet_meta_func, HEADER_PREFIX);
if (clean_unfinished_meta_status != OLAP_SUCCESS) {
// If failed to clean meta just skip the error, there will be useless metas in rocksdb column family
LOG(WARNING) << "there is failure when clean temp tablet meta from data dir=" << _path;
} else {
LOG(INFO) << "successfully clean temp tablet meta from data dir=" << _path;
}
auto clean_unifinished_rowset_meta_func = [this](TabletUid tablet_uid, RowsetId rowset_id,
const std::string& value) -> bool {
RowsetMetaManager::remove(_meta, tablet_uid, rowset_id);
LOG(INFO) << "successfully clean temp rowset meta for rowset_id=" << rowset_id
<< " from data dir=" << _path;
return true;
};
OLAPStatus clean_unfinished_rowset_meta_status =
RowsetMetaManager::traverse_rowset_metas(_meta, clean_unifinished_rowset_meta_func);
if (clean_unfinished_rowset_meta_status != OLAP_SUCCESS) {
// If failed to clean meta just skip the error, there will be useless metas in rocksdb column family
LOG(FATAL) << "fail to clean temp rowset meta from data dir=" << _path;
} else {
LOG(INFO) << "success to clean temp rowset meta from data dir=" << _path;
}
return OLAP_SUCCESS;
}
// convert old tablet and its files to new tablet meta and rowset format
// if any error occurred during converting, stop it and break.
OLAPStatus DataDir::_convert_old_tablet() {
auto convert_tablet_func = [this](int64_t tablet_id, int32_t schema_hash,
const std::string& value) -> bool {
OlapSnapshotConverter converter;
// convert olap header and files
OLAPHeaderMessage olap_header_msg;
TabletMetaPB tablet_meta_pb;
vector<RowsetMetaPB> pending_rowsets;
bool parsed = olap_header_msg.ParseFromString(value);
if (!parsed) {
LOG(FATAL) << "convert olap header to tablet meta failed when load olap header tablet="
<< tablet_id << "." << schema_hash;
return false;
}
string old_data_path_prefix =
get_absolute_tablet_path(olap_header_msg.shard_id(), olap_header_msg.tablet_id(),
olap_header_msg.schema_hash());
OLAPStatus status = converter.to_new_snapshot(olap_header_msg, old_data_path_prefix,
old_data_path_prefix, &tablet_meta_pb,
&pending_rowsets, true);
if (status != OLAP_SUCCESS) {
LOG(FATAL) << "convert olap header to tablet meta failed when convert header and files "
"tablet="
<< tablet_id << "." << schema_hash;
return false;
}
// write pending rowset to olap meta
for (auto& rowset_pb : pending_rowsets) {
RowsetId rowset_id;
rowset_id.init(rowset_pb.rowset_id_v2());
status = RowsetMetaManager::save(_meta, rowset_pb.tablet_uid(), rowset_id, rowset_pb);
if (status != OLAP_SUCCESS) {
LOG(FATAL)
<< "convert olap header to tablet meta failed when save rowset meta tablet="
<< tablet_id << "." << schema_hash;
return false;
}
}
// write converted tablet meta to olap meta
string meta_binary;
tablet_meta_pb.SerializeToString(&meta_binary);
status = TabletMetaManager::save(this, tablet_meta_pb.tablet_id(),
tablet_meta_pb.schema_hash(), meta_binary);
if (status != OLAP_SUCCESS) {
LOG(FATAL) << "convert olap header to tablet meta failed when save tablet meta tablet="
<< tablet_id << "." << schema_hash;
return false;
} else {
LOG(INFO) << "convert olap header to tablet meta successfully and save tablet meta to "
"meta tablet="
<< tablet_id << "." << schema_hash;
}
return true;
};
OLAPStatus convert_tablet_status =
TabletMetaManager::traverse_headers(_meta, convert_tablet_func, OLD_HEADER_PREFIX);
if (convert_tablet_status != OLAP_SUCCESS) {
LOG(FATAL) << "there is failure when convert old tablet, data dir:" << _path;
return convert_tablet_status;
} else {
LOG(INFO) << "successfully convert old tablet, data dir: " << _path;
}
return OLAP_SUCCESS;
}
OLAPStatus DataDir::remove_old_meta_and_files() {
// clean old meta(olap header message)
auto clean_old_meta_files_func = [this](int64_t tablet_id, int32_t schema_hash,
const std::string& value) -> bool {
// convert olap header and files
OLAPHeaderMessage olap_header_msg;
TabletMetaPB tablet_meta_pb;
vector<RowsetMetaPB> pending_rowsets;
bool parsed = olap_header_msg.ParseFromString(value);
if (!parsed) {
LOG(FATAL) << "convert olap header to tablet meta failed when load olap header tablet="
<< tablet_id << "." << schema_hash;
return true;
}
OlapSnapshotConverter converter;
OLAPStatus status =
converter.to_tablet_meta_pb(olap_header_msg, &tablet_meta_pb, &pending_rowsets);
if (status != OLAP_SUCCESS) {
LOG(FATAL) << "convert olap header to tablet meta failed when convert header and files "
"tablet="
<< tablet_id << "." << schema_hash;
return true;
}
TabletSchema tablet_schema;
tablet_schema.init_from_pb(tablet_meta_pb.schema());
string data_path_prefix =
get_absolute_tablet_path(tablet_meta_pb.shard_id(), tablet_meta_pb.tablet_id(),
tablet_meta_pb.schema_hash());
// convert visible pdelta file to rowsets and remove old files
for (auto& visible_rowset : tablet_meta_pb.rs_metas()) {
RowsetMetaSharedPtr rowset_meta(new AlphaRowsetMeta());
rowset_meta->init_from_pb(visible_rowset);
RowsetSharedPtr rowset;
auto s = RowsetFactory::create_rowset(&tablet_schema, data_path_prefix, rowset_meta,
&rowset);
if (s != OLAP_SUCCESS) {
LOG(INFO) << "errors while init rowset. tablet_path=" << data_path_prefix;
return true;
}
std::vector<std::string> old_files;
if (rowset->remove_old_files(&old_files) != OLAP_SUCCESS) {
LOG(INFO) << "errors while remove_old_files. tablet_path=" << data_path_prefix;
return true;
}
}
// remove incremental dir and pending dir
std::string pending_delta_path = data_path_prefix + PENDING_DELTA_PREFIX;
if (FileUtils::check_exist(pending_delta_path)) {
LOG(INFO) << "remove pending delta path:" << pending_delta_path;
RETURN_WITH_WARN_IF_ERROR(
FileUtils::remove_all(pending_delta_path), true,
"errors while remove pending delta path. tablet_path=" + data_path_prefix);
}
std::string incremental_delta_path = data_path_prefix + INCREMENTAL_DELTA_PREFIX;
if (FileUtils::check_exist(incremental_delta_path)) {
LOG(INFO) << "remove incremental delta path:" << incremental_delta_path;
RETURN_WITH_WARN_IF_ERROR(
FileUtils::remove_all(incremental_delta_path), true,
"errors while remove incremental delta path. tablet_path=" + data_path_prefix);
}
TabletMetaManager::remove(this, tablet_id, schema_hash, OLD_HEADER_PREFIX);
LOG(INFO) << "successfully clean old tablet meta(olap header) for tablet=" << tablet_id
<< "." << schema_hash << " tablet_path=" << data_path_prefix;
return true;
};
OLAPStatus clean_old_meta_files_status = TabletMetaManager::traverse_headers(
_meta, clean_old_meta_files_func, OLD_HEADER_PREFIX);
if (clean_old_meta_files_status != OLAP_SUCCESS) {
// If failed to clean meta just skip the error, there will be useless metas in rocksdb column family
LOG(WARNING) << "there is failure when clean old tablet meta(olap header) from data dir:"
<< _path;
} else {
LOG(INFO) << "successfully clean old tablet meta(olap header) from data dir: " << _path;
}
return OLAP_SUCCESS;
}
bool DataDir::convert_old_data_success() {
return _convert_old_data_success;
}
OLAPStatus DataDir::set_convert_finished() {
OLAPStatus res = _meta->set_tablet_convert_finished();
if (res != OLAP_SUCCESS) {
LOG(FATAL) << "save convert flag failed after convert old tablet. dir=" << _path;
return res;
}
return OLAP_SUCCESS;
}
// TODO(ygl): deal with rowsets and tablets when load failed
OLAPStatus DataDir::load() {
LOG(INFO) << "start to load tablets from " << _path;
// load rowset meta from meta env and create rowset
// COMMITTED: add to txn manager
// VISIBLE: add to tablet
// if one rowset load failed, then the total data dir will not be loaded
std::vector<RowsetMetaSharedPtr> dir_rowset_metas;
LOG(INFO) << "begin loading rowset from meta";
auto load_rowset_func = [&dir_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;
}
dir_rowset_metas.push_back(rowset_meta);
return true;
};
OLAPStatus load_rowset_status =
RowsetMetaManager::traverse_rowset_metas(_meta, load_rowset_func);
if (load_rowset_status != OLAP_SUCCESS) {
LOG(WARNING) << "errors when load rowset meta from meta env, skip this data dir:" << _path;
} else {
LOG(INFO) << "load rowset from meta finished, data dir: " << _path;
}
// load tablet
// create tablet from tablet meta and add it to tablet mgr
LOG(INFO) << "begin loading tablet from meta";
std::set<int64_t> tablet_ids;
std::set<int64_t> failed_tablet_ids;
auto load_tablet_func = [this, &tablet_ids, &failed_tablet_ids](int64_t tablet_id, int32_t schema_hash,
const std::string& value) -> bool {
OLAPStatus status = _tablet_manager->load_tablet_from_meta(this, tablet_id, schema_hash,
value, false, false);
if (status != OLAP_SUCCESS && status != OLAP_ERR_TABLE_ALREADY_DELETED_ERROR) {
// load_tablet_from_meta() may return OLAP_ERR_TABLE_ALREADY_DELETED_ERROR
// which means the tablet status is DELETED
// This may happen when the tablet was just deleted before the BE restarted,
// but it has not been cleared from rocksdb. At this time, restarting the BE
// will read the tablet in the DELETE state from rocksdb. These tablets have been
// added to the garbage collection queue and will be automatically deleted afterwards.
// Therefore, we believe that this situation is not a failure.
LOG(WARNING) << "load tablet from header failed. status:" << status
<< ", tablet=" << tablet_id << "." << schema_hash;
failed_tablet_ids.insert(tablet_id);
} else {
tablet_ids.insert(tablet_id);
}
return true;
};
OLAPStatus load_tablet_status = TabletMetaManager::traverse_headers(_meta, load_tablet_func);
if (failed_tablet_ids.size() != 0) {
LOG(WARNING) << "load tablets from header failed"
<< ", loaded tablet: " << tablet_ids.size()
<< ", error tablet: " << failed_tablet_ids.size()
<< ", path: " << _path;
if (!config::ignore_load_tablet_failure) {
LOG(FATAL) << "load tablets encounter failure. stop BE process. path: " << _path;
}
}
if (load_tablet_status != OLAP_SUCCESS) {
LOG(WARNING) << "there is failure when loading tablet headers"
<< ", loaded tablet: " << tablet_ids.size()
<< ", error tablet: " << failed_tablet_ids.size()
<< ", path: " << _path;
} else {
LOG(INFO) << "load tablet from meta finished"
<< ", loaded tablet: " << tablet_ids.size()
<< ", error tablet: " << failed_tablet_ids.size()
<< ", path: " << _path;
}
// traverse rowset
// 1. add committed rowset to txn map
// 2. add visible rowset to tablet
// ignore any errors when load tablet or rowset, because fe will repair them after report
for (auto rowset_meta : dir_rowset_metas) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(rowset_meta->tablet_id(),
rowset_meta->tablet_schema_hash());
// tablet maybe dropped, but not drop related rowset meta
if (tablet == nullptr) {
LOG(WARNING) << "could not find tablet id: " << rowset_meta->tablet_id()
<< ", schema hash: " << rowset_meta->tablet_schema_hash()
<< ", for rowset: " << rowset_meta->rowset_id() << ", skip this rowset";
continue;
}
RowsetSharedPtr rowset;
OLAPStatus create_status = RowsetFactory::create_rowset(
&tablet->tablet_schema(), tablet->tablet_path(), rowset_meta, &rowset);
if (create_status != OLAP_SUCCESS) {
LOG(WARNING) << "could not create rowset from rowsetmeta: "
<< " rowset_id: " << rowset_meta->rowset_id()
<< " rowset_type: " << rowset_meta->rowset_type()
<< " rowset_state: " << rowset_meta->rowset_state();
continue;
}
if (rowset_meta->rowset_state() == RowsetStatePB::COMMITTED &&
rowset_meta->tablet_uid() == tablet->tablet_uid()) {
OLAPStatus commit_txn_status = _txn_manager->commit_txn(
_meta, rowset_meta->partition_id(), rowset_meta->txn_id(),
rowset_meta->tablet_id(), rowset_meta->tablet_schema_hash(),
rowset_meta->tablet_uid(), rowset_meta->load_id(), rowset, true);
if (commit_txn_status != OLAP_SUCCESS &&
commit_txn_status != OLAP_ERR_PUSH_TRANSACTION_ALREADY_EXIST) {
LOG(WARNING) << "failed to add committed rowset: " << rowset_meta->rowset_id()
<< " to tablet: " << rowset_meta->tablet_id()
<< " for txn: " << rowset_meta->txn_id();
} else {
LOG(INFO) << "successfully to add committed rowset: " << rowset_meta->rowset_id()
<< " to tablet: " << rowset_meta->tablet_id()
<< " schema hash: " << rowset_meta->tablet_schema_hash()
<< " for txn: " << rowset_meta->txn_id();
}
} else if (rowset_meta->rowset_state() == RowsetStatePB::VISIBLE &&
rowset_meta->tablet_uid() == tablet->tablet_uid()) {
OLAPStatus publish_status = tablet->add_rowset(rowset, false);
if (publish_status != OLAP_SUCCESS &&
publish_status != OLAP_ERR_PUSH_VERSION_ALREADY_EXIST) {
LOG(WARNING) << "add visible rowset to tablet failed rowset_id:"
<< rowset->rowset_id() << " tablet id: " << rowset_meta->tablet_id()
<< " txn id:" << rowset_meta->txn_id()
<< " start_version: " << rowset_meta->version().first
<< " end_version: " << rowset_meta->version().second;
}
} else {
LOG(WARNING) << "find invalid rowset: " << rowset_meta->rowset_id()
<< " with tablet id: " << rowset_meta->tablet_id()
<< " tablet uid: " << rowset_meta->tablet_uid()
<< " schema hash: " << rowset_meta->tablet_schema_hash()
<< " txn: " << rowset_meta->txn_id()
<< " current valid tablet uid: " << tablet->tablet_uid();
}
}
return OLAP_SUCCESS;
}
void DataDir::add_pending_ids(const std::string& id) {
WriteLock wr_lock(&_pending_path_mutex);
_pending_path_ids.insert(id);
}
void DataDir::remove_pending_ids(const std::string& id) {
WriteLock wr_lock(&_pending_path_mutex);
_pending_path_ids.erase(id);
}
// gc unused tablet schemahash dir
void DataDir::perform_path_gc_by_tablet() {
std::unique_lock<std::mutex> lck(_check_path_mutex);
_cv.wait(lck, [this] { return _stop_bg_worker || !_all_tablet_schemahash_paths.empty(); });
if (_stop_bg_worker) {
return;
}
LOG(INFO) << "start to path gc by tablet schemahash.";
int counter = 0;
for (auto& path : _all_tablet_schemahash_paths) {
++counter;
if (config::path_gc_check_step > 0 && counter % config::path_gc_check_step == 0) {
SleepFor(MonoDelta::FromMilliseconds(config::path_gc_check_step_interval_ms));
}
TTabletId tablet_id = -1;
TSchemaHash schema_hash = -1;
bool is_valid = _tablet_manager->get_tablet_id_and_schema_hash_from_path(path, &tablet_id,
&schema_hash);
if (!is_valid) {
LOG(WARNING) << "unknown path:" << path;
continue;
}
// should not happen, because already check it is a valid tablet schema hash path in previous step
// so that log fatal here
if (tablet_id < 1 || schema_hash < 1) {
LOG(WARNING) << "invalid tablet id " << tablet_id << " or schema hash " << schema_hash
<< ", path=" << path;
continue;
}
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id, schema_hash);
if (tablet != nullptr) {
// could find the tablet, then skip check it
continue;
}
boost::filesystem::path tablet_path(path);
boost::filesystem::path data_dir_path =
tablet_path.parent_path().parent_path().parent_path().parent_path();
std::string data_dir_string = data_dir_path.string();
DataDir* data_dir = StorageEngine::instance()->get_store(data_dir_string);
if (data_dir == nullptr) {
LOG(WARNING) << "could not find data dir for tablet path " << path;
continue;
}
_tablet_manager->try_delete_unused_tablet_path(data_dir, tablet_id, schema_hash, path);
}
_all_tablet_schemahash_paths.clear();
LOG(INFO) << "finished one time path gc by tablet.";
}
void DataDir::perform_path_gc_by_rowsetid() {
// init the set of valid path
// validate the path in data dir
std::unique_lock<std::mutex> lck(_check_path_mutex);
_cv.wait(lck, [this] { return _stop_bg_worker || !_all_check_paths.empty(); });
if (_stop_bg_worker) {
return;
}
LOG(INFO) << "start to path gc by rowsetid.";
int counter = 0;
for (auto& path : _all_check_paths) {
++counter;
if (config::path_gc_check_step > 0 && counter % config::path_gc_check_step == 0) {
SleepFor(MonoDelta::FromMilliseconds(config::path_gc_check_step_interval_ms));
}
TTabletId tablet_id = -1;
TSchemaHash schema_hash = -1;
bool is_valid = _tablet_manager->get_tablet_id_and_schema_hash_from_path(path, &tablet_id,
&schema_hash);
if (!is_valid) {
LOG(WARNING) << "unknown path:" << path;
continue;
}
if (tablet_id > 0 && schema_hash > 0) {
// tablet schema hash path or rowset file path
// gc thread should get tablet include deleted tablet
// or it will delete rowset file before tablet is garbage collected
RowsetId rowset_id;
bool is_rowset_file = TabletManager::get_rowset_id_from_path(path, &rowset_id);
if (is_rowset_file) {
TabletSharedPtr tablet = _tablet_manager->get_tablet(tablet_id, schema_hash);
if (tablet != nullptr) {
if (!tablet->check_rowset_id(rowset_id) &&
!StorageEngine::instance()->check_rowset_id_in_unused_rowsets(rowset_id)) {
_process_garbage_path(path);
}
}
}
}
}
_all_check_paths.clear();
LOG(INFO) << "finished one time path gc by rowsetid.";
}
// path producer
void DataDir::perform_path_scan() {
{
std::unique_lock<std::mutex> lck(_check_path_mutex);
if (!_all_check_paths.empty()) {
LOG(INFO) << "_all_check_paths is not empty when path scan.";
return;
}
LOG(INFO) << "start to scan data dir path:" << _path;
std::set<std::string> shards;
std::string data_path = _path + DATA_PREFIX;
Status ret = FileUtils::list_dirs_files(data_path, &shards, nullptr, Env::Default());
if (!ret.ok()) {
LOG(WARNING) << "fail to walk dir. path=[" + data_path << "] error[" << ret.to_string()
<< "]";
return;
}
for (const auto& shard : shards) {
std::string shard_path = data_path + "/" + shard;
std::set<std::string> tablet_ids;
ret = FileUtils::list_dirs_files(shard_path, &tablet_ids, nullptr, Env::Default());
if (!ret.ok()) {
LOG(WARNING) << "fail to walk dir. [path=" << shard_path << "] error["
<< ret.to_string() << "]";
continue;
}
for (const auto& tablet_id : tablet_ids) {
std::string tablet_id_path = shard_path + "/" + tablet_id;
std::set<std::string> schema_hashes;
ret = FileUtils::list_dirs_files(tablet_id_path, &schema_hashes, nullptr,
Env::Default());
if (!ret.ok()) {
LOG(WARNING) << "fail to walk dir. [path=" << tablet_id_path << "]"
<< " error[" << ret.to_string() << "]";
continue;
}
for (const auto& schema_hash : schema_hashes) {
std::string tablet_schema_hash_path = tablet_id_path + "/" + schema_hash;
_all_tablet_schemahash_paths.insert(tablet_schema_hash_path);
std::set<std::string> rowset_files;
ret = FileUtils::list_dirs_files(tablet_schema_hash_path, nullptr,
&rowset_files, Env::Default());
if (!ret.ok()) {
LOG(WARNING) << "fail to walk dir. [path=" << tablet_schema_hash_path
<< "] error[" << ret.to_string() << "]";
continue;
}
for (const auto& rowset_file : rowset_files) {
std::string rowset_file_path = tablet_schema_hash_path + "/" + rowset_file;
_all_check_paths.insert(rowset_file_path);
}
}
}
}
LOG(INFO) << "scan data dir path:" << _path
<< " finished. path size:" << _all_check_paths.size();
}
_cv.notify_one();
}
void DataDir::_process_garbage_path(const std::string& path) {
if (FileUtils::check_exist(path)) {
LOG(INFO) << "collect garbage dir path: " << path;
WARN_IF_ERROR(FileUtils::remove_all(path), "remove garbage dir failed. path: " + path);
}
}
bool DataDir::_check_pending_ids(const std::string& id) {
ReadLock rd_lock(&_pending_path_mutex);
return _pending_path_ids.find(id) != _pending_path_ids.end();
}
Status DataDir::update_capacity() {
try {
boost::filesystem::path path_name(_path);
boost::filesystem::space_info path_info = boost::filesystem::space(path_name);
_available_bytes = path_info.available;
if (_disk_capacity_bytes == 0) {
// disk capacity only need to be set once
_disk_capacity_bytes = path_info.capacity;
}
} catch (boost::filesystem::filesystem_error& e) {
RETURN_NOT_OK_STATUS_WITH_WARN(
Status::IOError(
Substitute("get path $0 available capacity failed, error=$1", _path, e.what())),
"boost::filesystem::space failed");
}
disks_total_capacity.set_value(_disk_capacity_bytes);
disks_avail_capacity.set_value(_available_bytes);
LOG(INFO) << "path: " << _path << " total capacity: " << _disk_capacity_bytes
<< ", available capacity: " << _available_bytes;
return Status::OK();
}
void DataDir::update_user_data_size(int64_t size) {
disks_data_used_capacity.set_value(size);
}
bool DataDir::reach_capacity_limit(int64_t incoming_data_size) {
double used_pct = (_disk_capacity_bytes - _available_bytes + incoming_data_size) /
(double)_disk_capacity_bytes;
int64_t left_bytes = _disk_capacity_bytes - _available_bytes - incoming_data_size;
if (used_pct >= config::storage_flood_stage_usage_percent / 100.0 &&
left_bytes <= config::storage_flood_stage_left_capacity_bytes) {
LOG(WARNING) << "reach capacity limit. used pct: " << used_pct
<< ", left bytes: " << left_bytes << ", path: " << _path;
return true;
}
return false;
}
} // namespace doris
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