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rocksdb/db/version_edit_handler.cc
mrambacher 13ae16c315 Cleanup includes in dbformat.h (#8930) 
Summary:
This header file was including everything and the kitchen sink when it did not need to.  This resulted in many places including this header when they needed other pieces instead.

Cleaned up this header to only include what was needed and fixed up the remaining code to include what was now missing.

Hopefully, this sort of code hygiene cleanup will speed up the builds...

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8930

Reviewed By: pdillinger

Differential Revision: D31142788

Pulled By: mrambacher

fbshipit-source-id: 6b45de3f300750c79f751f6227dece9cfd44085d
2021-09-29 04:04:40 -07:00

939 lines
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "db/version_edit_handler.h"
#include <cinttypes>
#include "db/blob/blob_file_cache.h"
#include "db/blob/blob_file_reader.h"
#include "logging/logging.h"
#include "monitoring/persistent_stats_history.h"
namespace ROCKSDB_NAMESPACE {
void VersionEditHandlerBase::Iterate(log::Reader& reader,
Status* log_read_status) {
Slice record;
std::string scratch;
assert(log_read_status);
assert(log_read_status->ok());
size_t recovered_edits = 0;
Status s = Initialize();
while (reader.LastRecordEnd() < max_manifest_read_size_ && s.ok() &&
reader.ReadRecord(&record, &scratch) && log_read_status->ok()) {
VersionEdit edit;
s = edit.DecodeFrom(record);
if (!s.ok()) {
break;
}
s = read_buffer_.AddEdit(&edit);
if (!s.ok()) {
break;
}
ColumnFamilyData* cfd = nullptr;
if (edit.is_in_atomic_group_) {
if (read_buffer_.IsFull()) {
for (auto& e : read_buffer_.replay_buffer()) {
s = ApplyVersionEdit(e, &cfd);
if (!s.ok()) {
break;
}
++recovered_edits;
}
if (!s.ok()) {
break;
}
read_buffer_.Clear();
}
} else {
s = ApplyVersionEdit(edit, &cfd);
if (s.ok()) {
++recovered_edits;
}
}
}
if (!log_read_status->ok()) {
s = *log_read_status;
}
CheckIterationResult(reader, &s);
if (!s.ok()) {
status_ = s;
}
TEST_SYNC_POINT_CALLBACK("VersionEditHandlerBase::Iterate:Finish",
&recovered_edits);
}
Status ListColumnFamiliesHandler::ApplyVersionEdit(
VersionEdit& edit, ColumnFamilyData** /*unused*/) {
Status s;
if (edit.is_column_family_add_) {
if (column_family_names_.find(edit.column_family_) !=
column_family_names_.end()) {
s = Status::Corruption("Manifest adding the same column family twice");
} else {
column_family_names_.insert(
{edit.column_family_, edit.column_family_name_});
}
} else if (edit.is_column_family_drop_) {
if (column_family_names_.find(edit.column_family_) ==
column_family_names_.end()) {
s = Status::Corruption("Manifest - dropping non-existing column family");
} else {
column_family_names_.erase(edit.column_family_);
}
}
return s;
}
Status FileChecksumRetriever::ApplyVersionEdit(VersionEdit& edit,
ColumnFamilyData** /*unused*/) {
for (const auto& deleted_file : edit.GetDeletedFiles()) {
Status s = file_checksum_list_.RemoveOneFileChecksum(deleted_file.second);
if (!s.ok()) {
return s;
}
}
for (const auto& new_file : edit.GetNewFiles()) {
Status s = file_checksum_list_.InsertOneFileChecksum(
new_file.second.fd.GetNumber(), new_file.second.file_checksum,
new_file.second.file_checksum_func_name);
if (!s.ok()) {
return s;
}
}
for (const auto& new_blob_file : edit.GetBlobFileAdditions()) {
std::string checksum_value = new_blob_file.GetChecksumValue();
std::string checksum_method = new_blob_file.GetChecksumMethod();
assert(checksum_value.empty() == checksum_method.empty());
if (checksum_method.empty()) {
checksum_value = kUnknownFileChecksum;
checksum_method = kUnknownFileChecksumFuncName;
}
Status s = file_checksum_list_.InsertOneFileChecksum(
new_blob_file.GetBlobFileNumber(), checksum_value, checksum_method);
if (!s.ok()) {
return s;
}
}
return Status::OK();
}
VersionEditHandler::VersionEditHandler(
bool read_only, std::vector<ColumnFamilyDescriptor> column_families,
VersionSet* version_set, bool track_missing_files,
bool no_error_if_files_missing, const std::shared_ptr<IOTracer>& io_tracer,
bool skip_load_table_files)
: VersionEditHandlerBase(),
read_only_(read_only),
column_families_(std::move(column_families)),
version_set_(version_set),
track_missing_files_(track_missing_files),
no_error_if_files_missing_(no_error_if_files_missing),
io_tracer_(io_tracer),
skip_load_table_files_(skip_load_table_files),
initialized_(false) {
assert(version_set_ != nullptr);
}
Status VersionEditHandler::Initialize() {
Status s;
if (!initialized_) {
for (const auto& cf_desc : column_families_) {
name_to_options_.emplace(cf_desc.name, cf_desc.options);
}
auto default_cf_iter = name_to_options_.find(kDefaultColumnFamilyName);
if (default_cf_iter == name_to_options_.end()) {
s = Status::InvalidArgument("Default column family not specified");
}
if (s.ok()) {
VersionEdit default_cf_edit;
default_cf_edit.AddColumnFamily(kDefaultColumnFamilyName);
default_cf_edit.SetColumnFamily(0);
ColumnFamilyData* cfd =
CreateCfAndInit(default_cf_iter->second, default_cf_edit);
assert(cfd != nullptr);
#ifdef NDEBUG
(void)cfd;
#endif
initialized_ = true;
}
}
return s;
}
Status VersionEditHandler::ApplyVersionEdit(VersionEdit& edit,
ColumnFamilyData** cfd) {
Status s;
if (edit.is_column_family_add_) {
s = OnColumnFamilyAdd(edit, cfd);
} else if (edit.is_column_family_drop_) {
s = OnColumnFamilyDrop(edit, cfd);
} else if (edit.IsWalAddition()) {
s = OnWalAddition(edit);
} else if (edit.IsWalDeletion()) {
s = OnWalDeletion(edit);
} else {
s = OnNonCfOperation(edit, cfd);
}
if (s.ok()) {
assert(cfd != nullptr);
s = ExtractInfoFromVersionEdit(*cfd, edit);
}
return s;
}
Status VersionEditHandler::OnColumnFamilyAdd(VersionEdit& edit,
ColumnFamilyData** cfd) {
bool cf_in_not_found = false;
bool cf_in_builders = false;
CheckColumnFamilyId(edit, &cf_in_not_found, &cf_in_builders);
assert(cfd != nullptr);
*cfd = nullptr;
Status s;
if (cf_in_builders || cf_in_not_found) {
s = Status::Corruption("MANIFEST adding the same column family twice: " +
edit.column_family_name_);
}
if (s.ok()) {
auto cf_options = name_to_options_.find(edit.column_family_name_);
// implicitly add persistent_stats column family without requiring user
// to specify
ColumnFamilyData* tmp_cfd = nullptr;
bool is_persistent_stats_column_family =
edit.column_family_name_.compare(kPersistentStatsColumnFamilyName) == 0;
if (cf_options == name_to_options_.end() &&
!is_persistent_stats_column_family) {
column_families_not_found_.emplace(edit.column_family_,
edit.column_family_name_);
} else {
if (is_persistent_stats_column_family) {
ColumnFamilyOptions cfo;
OptimizeForPersistentStats(&cfo);
tmp_cfd = CreateCfAndInit(cfo, edit);
} else {
tmp_cfd = CreateCfAndInit(cf_options->second, edit);
}
*cfd = tmp_cfd;
}
}
return s;
}
Status VersionEditHandler::OnColumnFamilyDrop(VersionEdit& edit,
ColumnFamilyData** cfd) {
bool cf_in_not_found = false;
bool cf_in_builders = false;
CheckColumnFamilyId(edit, &cf_in_not_found, &cf_in_builders);
assert(cfd != nullptr);
*cfd = nullptr;
ColumnFamilyData* tmp_cfd = nullptr;
Status s;
if (cf_in_builders) {
tmp_cfd = DestroyCfAndCleanup(edit);
} else if (cf_in_not_found) {
column_families_not_found_.erase(edit.column_family_);
} else {
s = Status::Corruption("MANIFEST - dropping non-existing column family");
}
*cfd = tmp_cfd;
return s;
}
Status VersionEditHandler::OnWalAddition(VersionEdit& edit) {
assert(edit.IsWalAddition());
return version_set_->wals_.AddWals(edit.GetWalAdditions());
}
Status VersionEditHandler::OnWalDeletion(VersionEdit& edit) {
assert(edit.IsWalDeletion());
return version_set_->wals_.DeleteWalsBefore(
edit.GetWalDeletion().GetLogNumber());
}
Status VersionEditHandler::OnNonCfOperation(VersionEdit& edit,
ColumnFamilyData** cfd) {
bool cf_in_not_found = false;
bool cf_in_builders = false;
CheckColumnFamilyId(edit, &cf_in_not_found, &cf_in_builders);
assert(cfd != nullptr);
*cfd = nullptr;
Status s;
if (!cf_in_not_found) {
if (!cf_in_builders) {
s = Status::Corruption(
"MANIFEST record referencing unknown column family");
}
ColumnFamilyData* tmp_cfd = nullptr;
if (s.ok()) {
auto builder_iter = builders_.find(edit.column_family_);
assert(builder_iter != builders_.end());
tmp_cfd = version_set_->GetColumnFamilySet()->GetColumnFamily(
edit.column_family_);
assert(tmp_cfd != nullptr);
s = MaybeCreateVersion(edit, tmp_cfd, /*force_create_version=*/false);
if (s.ok()) {
s = builder_iter->second->version_builder()->Apply(&edit);
}
}
*cfd = tmp_cfd;
}
return s;
}
// TODO maybe cache the computation result
bool VersionEditHandler::HasMissingFiles() const {
bool ret = false;
for (const auto& elem : cf_to_missing_files_) {
const auto& missing_files = elem.second;
if (!missing_files.empty()) {
ret = true;
break;
}
}
if (!ret) {
for (const auto& elem : cf_to_missing_blob_files_high_) {
if (elem.second != kInvalidBlobFileNumber) {
ret = true;
break;
}
}
}
return ret;
}
void VersionEditHandler::CheckColumnFamilyId(const VersionEdit& edit,
bool* cf_in_not_found,
bool* cf_in_builders) const {
assert(cf_in_not_found != nullptr);
assert(cf_in_builders != nullptr);
// Not found means that user didn't supply that column
// family option AND we encountered column family add
// record. Once we encounter column family drop record,
// we will delete the column family from
// column_families_not_found.
bool in_not_found = column_families_not_found_.find(edit.column_family_) !=
column_families_not_found_.end();
// in builders means that user supplied that column family
// option AND that we encountered column family add record
bool in_builders = builders_.find(edit.column_family_) != builders_.end();
// They cannot both be true
assert(!(in_not_found && in_builders));
*cf_in_not_found = in_not_found;
*cf_in_builders = in_builders;
}
void VersionEditHandler::CheckIterationResult(const log::Reader& reader,
Status* s) {
assert(s != nullptr);
if (!s->ok()) {
// Do nothing here.
} else if (!version_edit_params_.has_log_number_ ||
!version_edit_params_.has_next_file_number_ ||
!version_edit_params_.has_last_sequence_) {
std::string msg("no ");
if (!version_edit_params_.has_log_number_) {
msg.append("log_file_number, ");
}
if (!version_edit_params_.has_next_file_number_) {
msg.append("next_file_number, ");
}
if (!version_edit_params_.has_last_sequence_) {
msg.append("last_sequence, ");
}
msg = msg.substr(0, msg.size() - 2);
msg.append(" entry in MANIFEST");
*s = Status::Corruption(msg);
}
// There were some column families in the MANIFEST that weren't specified
// in the argument. This is OK in read_only mode
if (s->ok() && MustOpenAllColumnFamilies() &&
!column_families_not_found_.empty()) {
std::string msg;
for (const auto& cf : column_families_not_found_) {
msg.append(", ");
msg.append(cf.second);
}
msg = msg.substr(2);
*s = Status::InvalidArgument("Column families not opened: " + msg);
}
if (s->ok()) {
version_set_->GetColumnFamilySet()->UpdateMaxColumnFamily(
version_edit_params_.max_column_family_);
version_set_->MarkMinLogNumberToKeep2PC(
version_edit_params_.min_log_number_to_keep_);
version_set_->MarkFileNumberUsed(version_edit_params_.prev_log_number_);
version_set_->MarkFileNumberUsed(version_edit_params_.log_number_);
for (auto* cfd : *(version_set_->GetColumnFamilySet())) {
if (cfd->IsDropped()) {
continue;
}
auto builder_iter = builders_.find(cfd->GetID());
assert(builder_iter != builders_.end());
auto* builder = builder_iter->second->version_builder();
if (!builder->CheckConsistencyForNumLevels()) {
*s = Status::InvalidArgument(
"db has more levels than options.num_levels");
break;
}
}
}
if (s->ok()) {
for (auto* cfd : *(version_set_->GetColumnFamilySet())) {
if (cfd->IsDropped()) {
continue;
}
if (read_only_) {
cfd->table_cache()->SetTablesAreImmortal();
}
*s = LoadTables(cfd, /*prefetch_index_and_filter_in_cache=*/false,
/*is_initial_load=*/true);
if (!s->ok()) {
// If s is IOError::PathNotFound, then we mark the db as corrupted.
if (s->IsPathNotFound()) {
*s = Status::Corruption("Corruption: " + s->ToString());
}
break;
}
}
}
if (s->ok()) {
for (auto* cfd : *(version_set_->column_family_set_)) {
if (cfd->IsDropped()) {
continue;
}
assert(cfd->initialized());
VersionEdit edit;
*s = MaybeCreateVersion(edit, cfd, /*force_create_version=*/true);
if (!s->ok()) {
break;
}
}
}
if (s->ok()) {
version_set_->manifest_file_size_ = reader.GetReadOffset();
assert(version_set_->manifest_file_size_ > 0);
version_set_->next_file_number_.store(
version_edit_params_.next_file_number_ + 1);
SequenceNumber last_seq = version_edit_params_.last_sequence_;
assert(last_seq != kMaxSequenceNumber);
if (last_seq != kMaxSequenceNumber &&
last_seq > version_set_->last_allocated_sequence_.load()) {
version_set_->last_allocated_sequence_.store(last_seq);
}
if (last_seq != kMaxSequenceNumber &&
last_seq > version_set_->last_published_sequence_.load()) {
version_set_->last_published_sequence_.store(last_seq);
}
if (last_seq != kMaxSequenceNumber &&
last_seq > version_set_->last_sequence_.load()) {
version_set_->last_sequence_.store(last_seq);
}
version_set_->prev_log_number_ = version_edit_params_.prev_log_number_;
}
}
ColumnFamilyData* VersionEditHandler::CreateCfAndInit(
const ColumnFamilyOptions& cf_options, const VersionEdit& edit) {
ColumnFamilyData* cfd = version_set_->CreateColumnFamily(cf_options, &edit);
assert(cfd != nullptr);
cfd->set_initialized();
assert(builders_.find(edit.column_family_) == builders_.end());
builders_.emplace(edit.column_family_,
VersionBuilderUPtr(new BaseReferencedVersionBuilder(cfd)));
if (track_missing_files_) {
cf_to_missing_files_.emplace(edit.column_family_,
std::unordered_set<uint64_t>());
cf_to_missing_blob_files_high_.emplace(edit.column_family_,
kInvalidBlobFileNumber);
}
return cfd;
}
ColumnFamilyData* VersionEditHandler::DestroyCfAndCleanup(
const VersionEdit& edit) {
auto builder_iter = builders_.find(edit.column_family_);
assert(builder_iter != builders_.end());
builders_.erase(builder_iter);
if (track_missing_files_) {
auto missing_files_iter = cf_to_missing_files_.find(edit.column_family_);
assert(missing_files_iter != cf_to_missing_files_.end());
cf_to_missing_files_.erase(missing_files_iter);
auto missing_blob_files_high_iter =
cf_to_missing_blob_files_high_.find(edit.column_family_);
assert(missing_blob_files_high_iter !=
cf_to_missing_blob_files_high_.end());
cf_to_missing_blob_files_high_.erase(missing_blob_files_high_iter);
}
ColumnFamilyData* ret =
version_set_->GetColumnFamilySet()->GetColumnFamily(edit.column_family_);
assert(ret != nullptr);
ret->SetDropped();
ret->UnrefAndTryDelete();
ret = nullptr;
return ret;
}
Status VersionEditHandler::MaybeCreateVersion(const VersionEdit& /*edit*/,
ColumnFamilyData* cfd,
bool force_create_version) {
assert(cfd->initialized());
Status s;
if (force_create_version) {
auto builder_iter = builders_.find(cfd->GetID());
assert(builder_iter != builders_.end());
auto* builder = builder_iter->second->version_builder();
auto* v = new Version(cfd, version_set_, version_set_->file_options_,
*cfd->GetLatestMutableCFOptions(), io_tracer_,
version_set_->current_version_number_++);
s = builder->SaveTo(v->storage_info());
if (s.ok()) {
// Install new version
v->PrepareApply(
*cfd->GetLatestMutableCFOptions(),
!(version_set_->db_options_->skip_stats_update_on_db_open));
version_set_->AppendVersion(cfd, v);
} else {
delete v;
}
}
return s;
}
Status VersionEditHandler::LoadTables(ColumnFamilyData* cfd,
bool prefetch_index_and_filter_in_cache,
bool is_initial_load) {
if (skip_load_table_files_) {
return Status::OK();
}
assert(cfd != nullptr);
assert(!cfd->IsDropped());
auto builder_iter = builders_.find(cfd->GetID());
assert(builder_iter != builders_.end());
assert(builder_iter->second != nullptr);
VersionBuilder* builder = builder_iter->second->version_builder();
assert(builder);
Status s = builder->LoadTableHandlers(
cfd->internal_stats(),
version_set_->db_options_->max_file_opening_threads,
prefetch_index_and_filter_in_cache, is_initial_load,
cfd->GetLatestMutableCFOptions()->prefix_extractor.get(),
MaxFileSizeForL0MetaPin(*cfd->GetLatestMutableCFOptions()));
if ((s.IsPathNotFound() || s.IsCorruption()) && no_error_if_files_missing_) {
s = Status::OK();
}
if (!s.ok() && !version_set_->db_options_->paranoid_checks) {
s = Status::OK();
}
return s;
}
Status VersionEditHandler::ExtractInfoFromVersionEdit(ColumnFamilyData* cfd,
const VersionEdit& edit) {
Status s;
if (edit.has_db_id_) {
version_set_->db_id_ = edit.GetDbId();
version_edit_params_.SetDBId(edit.db_id_);
}
if (cfd != nullptr) {
if (edit.has_log_number_) {
if (cfd->GetLogNumber() > edit.log_number_) {
ROCKS_LOG_WARN(
version_set_->db_options()->info_log,
"MANIFEST corruption detected, but ignored - Log numbers in "
"records NOT monotonically increasing");
} else {
cfd->SetLogNumber(edit.log_number_);
version_edit_params_.SetLogNumber(edit.log_number_);
}
}
if (edit.has_comparator_ &&
edit.comparator_ != cfd->user_comparator()->Name()) {
if (!cf_to_cmp_names_) {
s = Status::InvalidArgument(
cfd->user_comparator()->Name(),
"does not match existing comparator " + edit.comparator_);
} else {
cf_to_cmp_names_->emplace(cfd->GetID(), edit.comparator_);
}
}
if (edit.HasFullHistoryTsLow()) {
const std::string& new_ts = edit.GetFullHistoryTsLow();
cfd->SetFullHistoryTsLow(new_ts);
}
}
if (s.ok()) {
if (edit.has_prev_log_number_) {
version_edit_params_.SetPrevLogNumber(edit.prev_log_number_);
}
if (edit.has_next_file_number_) {
version_edit_params_.SetNextFile(edit.next_file_number_);
}
if (edit.has_max_column_family_) {
version_edit_params_.SetMaxColumnFamily(edit.max_column_family_);
}
if (edit.has_min_log_number_to_keep_) {
version_edit_params_.min_log_number_to_keep_ =
std::max(version_edit_params_.min_log_number_to_keep_,
edit.min_log_number_to_keep_);
}
if (edit.has_last_sequence_) {
version_edit_params_.SetLastSequence(edit.last_sequence_);
}
if (!version_edit_params_.has_prev_log_number_) {
version_edit_params_.SetPrevLogNumber(0);
}
}
return s;
}
VersionEditHandlerPointInTime::VersionEditHandlerPointInTime(
bool read_only, std::vector<ColumnFamilyDescriptor> column_families,
VersionSet* version_set, const std::shared_ptr<IOTracer>& io_tracer)
: VersionEditHandler(read_only, column_families, version_set,
/*track_missing_files=*/true,
/*no_error_if_files_missing=*/true, io_tracer) {}
VersionEditHandlerPointInTime::~VersionEditHandlerPointInTime() {
for (const auto& elem : versions_) {
delete elem.second;
}
versions_.clear();
}
void VersionEditHandlerPointInTime::CheckIterationResult(
const log::Reader& reader, Status* s) {
VersionEditHandler::CheckIterationResult(reader, s);
assert(s != nullptr);
if (s->ok()) {
for (auto* cfd : *(version_set_->column_family_set_)) {
if (cfd->IsDropped()) {
continue;
}
assert(cfd->initialized());
auto v_iter = versions_.find(cfd->GetID());
if (v_iter != versions_.end()) {
assert(v_iter->second != nullptr);
version_set_->AppendVersion(cfd, v_iter->second);
versions_.erase(v_iter);
}
}
}
}
ColumnFamilyData* VersionEditHandlerPointInTime::DestroyCfAndCleanup(
const VersionEdit& edit) {
ColumnFamilyData* cfd = VersionEditHandler::DestroyCfAndCleanup(edit);
auto v_iter = versions_.find(edit.column_family_);
if (v_iter != versions_.end()) {
delete v_iter->second;
versions_.erase(v_iter);
}
return cfd;
}
Status VersionEditHandlerPointInTime::MaybeCreateVersion(
const VersionEdit& edit, ColumnFamilyData* cfd, bool force_create_version) {
assert(cfd != nullptr);
if (!force_create_version) {
assert(edit.column_family_ == cfd->GetID());
}
auto missing_files_iter = cf_to_missing_files_.find(cfd->GetID());
assert(missing_files_iter != cf_to_missing_files_.end());
std::unordered_set<uint64_t>& missing_files = missing_files_iter->second;
auto missing_blob_files_high_iter =
cf_to_missing_blob_files_high_.find(cfd->GetID());
assert(missing_blob_files_high_iter != cf_to_missing_blob_files_high_.end());
const uint64_t prev_missing_blob_file_high =
missing_blob_files_high_iter->second;
VersionBuilder* builder = nullptr;
if (prev_missing_blob_file_high != kInvalidBlobFileNumber) {
auto builder_iter = builders_.find(cfd->GetID());
assert(builder_iter != builders_.end());
builder = builder_iter->second->version_builder();
assert(builder != nullptr);
}
// At this point, we have not yet applied the new version edits read from the
// MANIFEST. We check whether we have any missing table and blob files.
const bool prev_has_missing_files =
!missing_files.empty() ||
(prev_missing_blob_file_high != kInvalidBlobFileNumber &&
prev_missing_blob_file_high >= builder->GetMinOldestBlobFileNumber());
for (const auto& file : edit.GetDeletedFiles()) {
uint64_t file_num = file.second;
auto fiter = missing_files.find(file_num);
if (fiter != missing_files.end()) {
missing_files.erase(fiter);
}
}
assert(!cfd->ioptions()->cf_paths.empty());
Status s;
for (const auto& elem : edit.GetNewFiles()) {
const FileMetaData& meta = elem.second;
const FileDescriptor& fd = meta.fd;
uint64_t file_num = fd.GetNumber();
const std::string fpath =
MakeTableFileName(cfd->ioptions()->cf_paths[0].path, file_num);
s = VerifyFile(fpath, meta);
if (s.IsPathNotFound() || s.IsNotFound() || s.IsCorruption()) {
missing_files.insert(file_num);
s = Status::OK();
} else if (!s.ok()) {
break;
}
}
uint64_t missing_blob_file_num = prev_missing_blob_file_high;
for (const auto& elem : edit.GetBlobFileAdditions()) {
uint64_t file_num = elem.GetBlobFileNumber();
s = VerifyBlobFile(cfd, file_num, elem);
if (s.IsPathNotFound() || s.IsNotFound() || s.IsCorruption()) {
missing_blob_file_num = std::max(missing_blob_file_num, file_num);
s = Status::OK();
} else if (!s.ok()) {
break;
}
}
bool has_missing_blob_files = false;
if (missing_blob_file_num != kInvalidBlobFileNumber &&
missing_blob_file_num >= prev_missing_blob_file_high) {
missing_blob_files_high_iter->second = missing_blob_file_num;
has_missing_blob_files = true;
} else if (missing_blob_file_num < prev_missing_blob_file_high) {
assert(false);
}
// We still have not applied the new version edit, but have tried to add new
// table and blob files after verifying their presence and consistency.
// Therefore, we know whether we will see new missing table and blob files
// later after actually applying the version edit. We perform the check here
// and record the result.
const bool has_missing_files =
!missing_files.empty() || has_missing_blob_files;
bool missing_info = !version_edit_params_.has_log_number_ ||
!version_edit_params_.has_next_file_number_ ||
!version_edit_params_.has_last_sequence_;
// Create version before apply edit. The version will represent the state
// before applying the version edit.
// A new version will created if:
// 1) no error has occurred so far, and
// 2) log_number_, next_file_number_ and last_sequence_ are known, and
// 3) any of the following:
// a) no missing file before, but will have missing file(s) after applying
// this version edit.
// b) no missing file after applying the version edit, and the caller
// explicitly request that a new version be created.
if (s.ok() && !missing_info &&
((has_missing_files && !prev_has_missing_files) ||
(!has_missing_files && force_create_version))) {
if (!builder) {
auto builder_iter = builders_.find(cfd->GetID());
assert(builder_iter != builders_.end());
builder = builder_iter->second->version_builder();
assert(builder);
}
auto* version = new Version(cfd, version_set_, version_set_->file_options_,
*cfd->GetLatestMutableCFOptions(), io_tracer_,
version_set_->current_version_number_++);
s = builder->SaveTo(version->storage_info());
if (s.ok()) {
version->PrepareApply(
*cfd->GetLatestMutableCFOptions(),
!version_set_->db_options_->skip_stats_update_on_db_open);
auto v_iter = versions_.find(cfd->GetID());
if (v_iter != versions_.end()) {
delete v_iter->second;
v_iter->second = version;
} else {
versions_.emplace(cfd->GetID(), version);
}
} else {
delete version;
}
}
return s;
}
Status VersionEditHandlerPointInTime::VerifyFile(const std::string& fpath,
const FileMetaData& fmeta) {
return version_set_->VerifyFileMetadata(fpath, fmeta);
}
Status VersionEditHandlerPointInTime::VerifyBlobFile(
ColumnFamilyData* cfd, uint64_t blob_file_num,
const BlobFileAddition& blob_addition) {
BlobFileCache* blob_file_cache = cfd->blob_file_cache();
assert(blob_file_cache);
CacheHandleGuard<BlobFileReader> blob_file_reader;
Status s =
blob_file_cache->GetBlobFileReader(blob_file_num, &blob_file_reader);
if (!s.ok()) {
return s;
}
// TODO: verify checksum
(void)blob_addition;
return s;
}
Status ManifestTailer::Initialize() {
if (Mode::kRecovery == mode_) {
return VersionEditHandler::Initialize();
}
assert(Mode::kCatchUp == mode_);
Status s;
if (!initialized_) {
ColumnFamilySet* cfd_set = version_set_->GetColumnFamilySet();
assert(cfd_set);
ColumnFamilyData* default_cfd = cfd_set->GetDefault();
assert(default_cfd);
auto builder_iter = builders_.find(default_cfd->GetID());
assert(builder_iter != builders_.end());
Version* dummy_version = default_cfd->dummy_versions();
assert(dummy_version);
Version* base_version = dummy_version->Next();
assert(base_version);
base_version->Ref();
VersionBuilderUPtr new_builder(
new BaseReferencedVersionBuilder(default_cfd, base_version));
builder_iter->second = std::move(new_builder);
initialized_ = true;
}
return s;
}
Status ManifestTailer::ApplyVersionEdit(VersionEdit& edit,
ColumnFamilyData** cfd) {
Status s = VersionEditHandler::ApplyVersionEdit(edit, cfd);
if (s.ok()) {
assert(cfd);
if (*cfd) {
cfds_changed_.insert(*cfd);
}
}
return s;
}
Status ManifestTailer::OnColumnFamilyAdd(VersionEdit& edit,
ColumnFamilyData** cfd) {
if (Mode::kRecovery == mode_) {
return VersionEditHandler::OnColumnFamilyAdd(edit, cfd);
}
assert(Mode::kCatchUp == mode_);
ColumnFamilySet* cfd_set = version_set_->GetColumnFamilySet();
assert(cfd_set);
ColumnFamilyData* tmp_cfd = cfd_set->GetColumnFamily(edit.GetColumnFamily());
assert(cfd);
*cfd = tmp_cfd;
if (!tmp_cfd) {
// For now, ignore new column families created after Recover() succeeds.
return Status::OK();
}
auto builder_iter = builders_.find(edit.GetColumnFamily());
assert(builder_iter != builders_.end());
Version* dummy_version = tmp_cfd->dummy_versions();
assert(dummy_version);
Version* base_version = dummy_version->Next();
assert(base_version);
base_version->Ref();
VersionBuilderUPtr new_builder(
new BaseReferencedVersionBuilder(tmp_cfd, base_version));
builder_iter->second = std::move(new_builder);
#ifndef NDEBUG
auto version_iter = versions_.find(edit.GetColumnFamily());
assert(version_iter != versions_.end());
#endif // !NDEBUG
return Status::OK();
}
void ManifestTailer::CheckIterationResult(const log::Reader& reader,
Status* s) {
VersionEditHandlerPointInTime::CheckIterationResult(reader, s);
assert(s);
if (s->ok()) {
if (Mode::kRecovery == mode_) {
mode_ = Mode::kCatchUp;
} else {
assert(Mode::kCatchUp == mode_);
}
}
}
Status ManifestTailer::VerifyFile(const std::string& fpath,
const FileMetaData& fmeta) {
Status s = VersionEditHandlerPointInTime::VerifyFile(fpath, fmeta);
// TODO: Open file or create hard link to prevent the file from being
// deleted.
return s;
}
void DumpManifestHandler::CheckIterationResult(const log::Reader& reader,
Status* s) {
VersionEditHandler::CheckIterationResult(reader, s);
if (!s->ok()) {
fprintf(stdout, "%s\n", s->ToString().c_str());
return;
}
assert(cf_to_cmp_names_);
for (auto* cfd : *(version_set_->column_family_set_)) {
fprintf(stdout,
"--------------- Column family \"%s\" (ID %" PRIu32
") --------------\n",
cfd->GetName().c_str(), cfd->GetID());
fprintf(stdout, "log number: %" PRIu64 "\n", cfd->GetLogNumber());
auto it = cf_to_cmp_names_->find(cfd->GetID());
if (it != cf_to_cmp_names_->end()) {
fprintf(stdout,
"comparator: <%s>, but the comparator object is not available.\n",
it->second.c_str());
} else {
fprintf(stdout, "comparator: %s\n", cfd->user_comparator()->Name());
}
assert(cfd->current());
// Print out DebugStrings. Can include non-terminating null characters.
fwrite(cfd->current()->DebugString(hex_).data(), sizeof(char),
cfd->current()->DebugString(hex_).size(), stdout);
}
fprintf(stdout,
"next_file_number %" PRIu64 " last_sequence %" PRIu64
" prev_log_number %" PRIu64 " max_column_family %" PRIu32
" min_log_number_to_keep "
"%" PRIu64 "\n",
version_set_->current_next_file_number(),
version_set_->LastSequence(), version_set_->prev_log_number(),
version_set_->column_family_set_->GetMaxColumnFamily(),
version_set_->min_log_number_to_keep_2pc());
}
} // namespace ROCKSDB_NAMESPACE
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