mirror of https://github.com/facebook/rocksdb.git
[column families] Implement DB::OpenWithColumnFamilies()
Summary: In addition to implementing OpenWithColumnFamilies, this diff also includes some minor changes: * Changed all column family names from Slice() to std::string. The performance of column family name handling is not critical, and it's more convenient and cleaner to have names as std::strings * Implemented ColumnFamilyOptions(const Options&) and DBOptions(const Options&) * Added ColumnFamilyOptions to VersionSet::ColumnFamilyData. ColumnFamilyOptions are specified on OpenWithColumnFamilies() and CreateColumnFamily() I will keep the diff in the Phabricator for a day or two and will push to the branch then. Feel free to comment even after the diff has been pushed. Test Plan: Added a simple unit test Reviewers: dhruba, haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D15033
This commit is contained in:
Igor Canadi
parent
d3a2ba9c64
commit
72918efffe
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@ -33,8 +33,15 @@ class ColumnFamilyTest {
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db_ = nullptr;
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}
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void Open() {
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ASSERT_OK(DB::Open(options_, dbname_, &db_));
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Status Open(vector<string> cf) {
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vector<ColumnFamilyDescriptor> column_families;
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for (auto x : cf) {
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column_families.push_back(
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ColumnFamilyDescriptor(x, ColumnFamilyOptions()));
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}
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vector <ColumnFamilyHandle> handles;
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return DB::OpenWithColumnFamilies(db_options_, dbname_, column_families,
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&handles, &db_);
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}
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Options options_;
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@ -45,25 +52,26 @@ class ColumnFamilyTest {
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};
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TEST(ColumnFamilyTest, AddDrop) {
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Open();
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ASSERT_OK(Open({"default"}));
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ColumnFamilyHandle handles[4];
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ASSERT_OK(db_->CreateColumnFamily(column_family_options_, Slice("one"),
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&handles[0]));
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ASSERT_OK(db_->CreateColumnFamily(column_family_options_, Slice("two"),
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&handles[1]));
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ASSERT_OK(db_->CreateColumnFamily(column_family_options_, Slice("three"),
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&handles[2]));
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ASSERT_OK(
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db_->CreateColumnFamily(column_family_options_, "one", &handles[0]));
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ASSERT_OK(
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db_->CreateColumnFamily(column_family_options_, "two", &handles[1]));
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ASSERT_OK(
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db_->CreateColumnFamily(column_family_options_, "three", &handles[2]));
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ASSERT_OK(db_->DropColumnFamily(handles[1]));
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ASSERT_OK(db_->CreateColumnFamily(column_family_options_, Slice("four"),
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&handles[3]));
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ASSERT_OK(
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db_->CreateColumnFamily(column_family_options_, "four", &handles[3]));
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Close();
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Open(); // this will roll the manifest, column families should stay consistent
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ASSERT_TRUE(Open({"default"}).IsInvalidArgument());
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ASSERT_OK(Open({"default", "one", "three", "four"}));
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Close();
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vector<string> families;
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DB::ListColumnFamilies(db_options_, dbname_, &families);
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sort(families.begin(), families.end());
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ASSERT_TRUE(families == vector<string>({"four", "one", "three"}));
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ASSERT_TRUE(families == vector<string>({"default", "four", "one", "three"}));
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}
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} // namespace rocksdb
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@ -60,7 +60,7 @@
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namespace rocksdb {
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const Slice& default_column_family_name("default");
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const std::string default_column_family_name("default");
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void dumpLeveldbBuildVersion(Logger * log);
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@ -843,8 +843,10 @@ void DBImpl::PurgeObsoleteWALFiles() {
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// If externalTable is set, then apply recovered transactions
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// to that table. This is used for readonly mode.
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Status DBImpl::Recover(VersionEdit* edit, MemTable* external_table,
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bool error_if_log_file_exist) {
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Status DBImpl::Recover(
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VersionEdit* edit,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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MemTable* external_table, bool error_if_log_file_exist) {
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mutex_.AssertHeld();
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assert(db_lock_ == nullptr);
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@ -894,6 +896,19 @@ Status DBImpl::Recover(VersionEdit* edit, MemTable* external_table,
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Status s = versions_->Recover();
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if (s.ok()) {
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if (column_families.size() != versions_->column_families_.size()) {
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return Status::InvalidArgument("Column family specifications mismatch");
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}
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for (auto cf : column_families) {
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auto cf_iter = versions_->column_families_.find(cf.name);
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if (cf_iter == versions_->column_families_.end()) {
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return Status::InvalidArgument("Column family specifications mismatch");
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}
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auto cf_data_iter = versions_->column_family_data_.find(cf_iter->second);
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assert(cf_data_iter != versions_->column_family_data_.end());
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cf_data_iter->second.options = cf.options;
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}
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SequenceNumber max_sequence(0);
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// Recover from all newer log files than the ones named in the
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@ -2862,15 +2877,23 @@ std::vector<Status> DBImpl::MultiGet(
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}
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Status DBImpl::CreateColumnFamily(const ColumnFamilyOptions& options,
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const Slice& column_family,
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const std::string& column_family_name,
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ColumnFamilyHandle* handle) {
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VersionEdit edit(0);
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edit.AddColumnFamily(column_family.ToString());
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edit.AddColumnFamily(column_family_name);
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MutexLock l(&mutex_);
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++versions_->max_column_family_;
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handle->id = versions_->max_column_family_;
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edit.SetColumnFamily(handle->id);
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return versions_->LogAndApply(&edit, &mutex_);
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Status s = versions_->LogAndApply(&edit, &mutex_);
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if (s.ok()) {
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// add to internal data structures
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versions_->column_families_[column_family_name] = handle->id;
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versions_->column_family_data_.insert(
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{handle->id,
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VersionSet::ColumnFamilyData(column_family_name, options)});
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}
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return s;
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}
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Status DBImpl::DropColumnFamily(const ColumnFamilyHandle& column_family) {
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@ -2878,7 +2901,19 @@ Status DBImpl::DropColumnFamily(const ColumnFamilyHandle& column_family) {
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edit.DropColumnFamily();
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edit.SetColumnFamily(column_family.id);
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MutexLock l(&mutex_);
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return versions_->LogAndApply(&edit, &mutex_);
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auto data_iter = versions_->column_family_data_.find(column_family.id);
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if (data_iter == versions_->column_family_data_.end()) {
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return Status::NotFound("Column family not found");
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}
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Status s = versions_->LogAndApply(&edit, &mutex_);
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if (s.ok()) {
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// remove from internal data structures
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auto cf_iter = versions_->column_families_.find(data_iter->second.name);
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assert(cf_iter != versions_->column_families_.end());
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versions_->column_families_.erase(cf_iter);
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versions_->column_family_data_.erase(data_iter);
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}
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return s;
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}
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bool DBImpl::KeyMayExist(const ReadOptions& options,
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@ -3803,7 +3838,7 @@ Status DB::Merge(const WriteOptions& opt,
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// Default implementation -- returns not supported status
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Status DB::CreateColumnFamily(const ColumnFamilyOptions& options,
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const Slice& column_family,
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const std::string& column_family_name,
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ColumnFamilyHandle* handle) {
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return Status::NotSupported("");
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}
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@ -3814,8 +3849,33 @@ Status DB::DropColumnFamily(const ColumnFamilyHandle& column_family) {
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DB::~DB() { }
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Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
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DBOptions db_options(options);
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ColumnFamilyOptions cf_options(options);
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std::vector<ColumnFamilyDescriptor> column_families;
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column_families.push_back(
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ColumnFamilyDescriptor(default_column_family_name, cf_options));
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std::vector<ColumnFamilyHandle> handles;
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return DB::OpenWithColumnFamilies(db_options, dbname, column_families,
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&handles, dbptr);
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}
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Status DB::OpenWithColumnFamilies(
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const DBOptions& db_options, const std::string& dbname,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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std::vector<ColumnFamilyHandle>* handles, DB** dbptr) {
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*dbptr = nullptr;
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EnvOptions soptions;
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// TODO temporary until we change DBImpl to accept
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// DBOptions instead of Options
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ColumnFamilyOptions default_column_family_options;
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for (auto cfd : column_families) {
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if (cfd.name == default_column_family_name) {
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default_column_family_options = cfd.options;
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break;
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}
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}
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// default options
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Options options(db_options, default_column_family_options);
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if (options.block_cache != nullptr && options.no_block_cache) {
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return Status::InvalidArgument(
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@ -3836,7 +3896,8 @@ Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
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}
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impl->mutex_.Lock();
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VersionEdit edit(impl->NumberLevels());
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s = impl->Recover(&edit); // Handles create_if_missing, error_if_exists
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// Handles create_if_missing, error_if_exists
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s = impl->Recover(&edit, column_families);
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if (s.ok()) {
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uint64_t new_log_number = impl->versions_->NewFileNumber();
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unique_ptr<WritableFile> lfile;
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@ -3854,6 +3915,13 @@ Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
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s = impl->versions_->LogAndApply(&edit, &impl->mutex_);
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}
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if (s.ok()) {
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// set column family handles
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handles->clear();
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for (auto cf : column_families) {
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auto cf_iter = impl->versions_->column_families_.find(cf.name);
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assert(cf_iter != impl->versions_->column_families_.end());
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handles->push_back(ColumnFamilyHandle(cf_iter->second));
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}
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delete impl->InstallSuperVersion(new DBImpl::SuperVersion());
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impl->mem_->SetLogNumber(impl->logfile_number_);
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impl->DeleteObsoleteFiles();
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@ -3878,19 +3946,12 @@ Status DB::Open(const Options& options, const std::string& dbname, DB** dbptr) {
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if (s.ok()) {
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*dbptr = impl;
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} else {
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handles->clear();
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delete impl;
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}
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return s;
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}
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Status DB::OpenWithColumnFamilies(
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const DBOptions& db_options, const std::string& name,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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std::vector<ColumnFamilyHandle>* handles, DB** dbptr) {
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// TODO
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return Status::NotSupported("Working on it");
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}
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Status DB::ListColumnFamilies(const DBOptions& db_options,
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const std::string& name,
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std::vector<std::string>* column_families) {
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@ -62,7 +62,7 @@ class DBImpl : public DB {
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const std::vector<Slice>& keys, std::vector<std::string>* values);
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virtual Status CreateColumnFamily(const ColumnFamilyOptions& options,
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const Slice& column_family,
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const std::string& column_family,
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ColumnFamilyHandle* handle);
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virtual Status DropColumnFamily(const ColumnFamilyHandle& column_family);
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@ -293,7 +293,9 @@ class DBImpl : public DB {
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// Recover the descriptor from persistent storage. May do a significant
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// amount of work to recover recently logged updates. Any changes to
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// be made to the descriptor are added to *edit.
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Status Recover(VersionEdit* edit, MemTable* external_table = nullptr,
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Status Recover(VersionEdit* edit,
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const std::vector<ColumnFamilyDescriptor>& column_families,
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MemTable* external_table = nullptr,
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bool error_if_log_file_exist = false);
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void MaybeIgnoreError(Status* s) const;
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@ -86,7 +86,12 @@ Status DB::OpenForReadOnly(const Options& options, const std::string& dbname,
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DBImplReadOnly* impl = new DBImplReadOnly(options, dbname);
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impl->mutex_.Lock();
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VersionEdit edit(impl->NumberLevels());
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Status s = impl->Recover(&edit, impl->GetMemTable(),
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DBOptions db_options(options);
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ColumnFamilyOptions cf_options(options);
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std::vector<ColumnFamilyDescriptor> column_families;
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column_families.push_back(
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ColumnFamilyDescriptor(default_column_family_name, cf_options));
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Status s = impl->Recover(&edit, column_families, impl->GetMemTable(),
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error_if_log_file_exist);
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impl->mutex_.Unlock();
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if (s.ok()) {
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@ -1443,6 +1443,11 @@ Status VersionSet::Recover() {
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uint64_t prev_log_number = 0;
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Builder builder(this, current_);
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// add default column family
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column_families_.insert({default_column_family_name, 0});
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column_family_data_.insert(
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{0, ColumnFamilyData(default_column_family_name)});
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{
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LogReporter reporter;
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reporter.status = &s;
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@ -1847,6 +1852,11 @@ Status VersionSet::WriteSnapshot(log::Writer* log) {
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// Save column families
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for (auto cf : column_families_) {
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VersionEdit edit(0);
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if (cf.second == 0) {
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// default column family is always there,
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// no need to explicitly write it
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continue;
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}
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edit.AddColumnFamily(cf.first);
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edit.SetColumnFamily(cf.second);
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std::string record;
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@ -439,7 +439,11 @@ class VersionSet {
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// column family metadata
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struct ColumnFamilyData {
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std::string name;
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ColumnFamilyOptions options;
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explicit ColumnFamilyData(const std::string& name) : name(name) {}
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ColumnFamilyData(const std::string& name,
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const ColumnFamilyOptions& options)
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: name(name), options(options) {}
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};
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std::unordered_map<std::string, uint32_t> column_families_;
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std::unordered_map<uint32_t, ColumnFamilyData> column_family_data_;
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@ -26,6 +26,6 @@ struct ColumnFamilyHandle {
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};
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const ColumnFamilyHandle default_column_family = ColumnFamilyHandle();
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extern const Slice& default_column_family_name;
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extern const std::string default_column_family_name;
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}
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@ -13,6 +13,7 @@
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#include <stdio.h>
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#include <memory>
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#include <vector>
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#include <string>
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#include "rocksdb/iterator.h"
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#include "rocksdb/options.h"
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#include "rocksdb/types.h"
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@ -26,8 +27,11 @@ struct ColumnFamilyHandle;
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extern const ColumnFamilyHandle default_column_family;
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struct ColumnFamilyDescriptor {
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Slice name;
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std::string name;
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ColumnFamilyOptions options;
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ColumnFamilyDescriptor(const std::string& name,
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const ColumnFamilyOptions& options)
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: name(name), options(options) {}
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};
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// Update Makefile if you change these
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@ -117,7 +121,7 @@ class DB {
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// Create a column_family and return the handle of column family
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// through the argument handle.
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virtual Status CreateColumnFamily(const ColumnFamilyOptions& options,
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const Slice& column_family,
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const std::string& column_family_name,
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ColumnFamilyHandle* handle);
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// Drop a column family specified by column_family handle.
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@ -68,6 +68,8 @@ struct CompressionOptions {
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strategy(strategy){}
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};
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struct Options;
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struct ColumnFamilyOptions {
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// -------------------
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// Parameters that affect behavior
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@ -426,6 +428,8 @@ struct ColumnFamilyOptions {
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// Create ColumnFamilyOptions with default values for all fields
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ColumnFamilyOptions();
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// Create ColumnFamilyOptions from Options
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explicit ColumnFamilyOptions(const Options& options);
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};
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struct DBOptions {
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@ -627,6 +631,8 @@ struct DBOptions {
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// Create DBOptions with default values for all fields
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DBOptions();
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// Create DBOptions from Options
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explicit DBOptions(const Options& options);
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};
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// Options to control the behavior of a database (passed to DB::Open)
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@ -73,6 +73,65 @@ ColumnFamilyOptions::ColumnFamilyOptions()
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assert(memtable_factory.get() != nullptr);
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}
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ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
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: comparator(options.comparator),
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merge_operator(options.merge_operator),
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compaction_filter(options.compaction_filter),
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compaction_filter_factory(options.compaction_filter_factory),
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write_buffer_size(options.write_buffer_size),
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max_write_buffer_number(options.max_write_buffer_number),
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min_write_buffer_number_to_merge(
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options.min_write_buffer_number_to_merge),
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block_cache(options.block_cache),
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block_cache_compressed(options.block_cache_compressed),
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block_size(options.block_size),
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block_restart_interval(options.block_restart_interval),
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compression(options.compression),
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compression_per_level(options.compression_per_level),
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compression_opts(options.compression_opts),
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filter_policy(options.filter_policy),
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prefix_extractor(options.prefix_extractor),
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whole_key_filtering(options.whole_key_filtering),
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num_levels(options.num_levels),
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level0_file_num_compaction_trigger(
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options.level0_file_num_compaction_trigger),
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level0_slowdown_writes_trigger(options.level0_slowdown_writes_trigger),
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level0_stop_writes_trigger(options.level0_stop_writes_trigger),
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max_mem_compaction_level(options.max_mem_compaction_level),
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target_file_size_base(options.target_file_size_base),
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target_file_size_multiplier(options.target_file_size_multiplier),
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max_bytes_for_level_base(options.max_bytes_for_level_base),
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max_bytes_for_level_multiplier(options.max_bytes_for_level_multiplier),
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max_bytes_for_level_multiplier_additional(
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options.max_bytes_for_level_multiplier_additional),
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expanded_compaction_factor(options.expanded_compaction_factor),
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source_compaction_factor(options.source_compaction_factor),
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max_grandparent_overlap_factor(options.max_grandparent_overlap_factor),
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disable_seek_compaction(options.disable_seek_compaction),
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soft_rate_limit(options.soft_rate_limit),
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hard_rate_limit(options.hard_rate_limit),
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||||
rate_limit_delay_max_milliseconds(
|
||||
options.rate_limit_delay_max_milliseconds),
|
||||
no_block_cache(options.no_block_cache),
|
||||
table_cache_numshardbits(options.table_cache_numshardbits),
|
||||
table_cache_remove_scan_count_limit(
|
||||
options.table_cache_remove_scan_count_limit),
|
||||
disable_auto_compactions(options.disable_auto_compactions),
|
||||
purge_redundant_kvs_while_flush(options.purge_redundant_kvs_while_flush),
|
||||
block_size_deviation(options.block_size_deviation),
|
||||
compaction_style(options.compaction_style),
|
||||
compaction_options_universal(options.compaction_options_universal),
|
||||
filter_deletes(options.filter_deletes),
|
||||
max_sequential_skip_in_iterations(
|
||||
options.max_sequential_skip_in_iterations),
|
||||
memtable_factory(options.memtable_factory),
|
||||
table_factory(options.table_factory),
|
||||
table_properties_collectors(options.table_properties_collectors),
|
||||
inplace_update_support(options.inplace_update_support),
|
||||
inplace_update_num_locks(options.inplace_update_num_locks) {
|
||||
assert(memtable_factory.get() != nullptr);
|
||||
}
|
||||
|
||||
DBOptions::DBOptions()
|
||||
: create_if_missing(false),
|
||||
error_if_exists(false),
|
||||
|
|
@ -107,6 +166,42 @@ DBOptions::DBOptions()
|
|||
use_adaptive_mutex(false),
|
||||
bytes_per_sync(0) { }
|
||||
|
||||
DBOptions::DBOptions(const Options& options)
|
||||
: create_if_missing(options.create_if_missing),
|
||||
error_if_exists(options.error_if_exists),
|
||||
paranoid_checks(options.paranoid_checks),
|
||||
env(options.env),
|
||||
info_log(options.info_log),
|
||||
max_open_files(options.max_open_files),
|
||||
statistics(options.statistics),
|
||||
disableDataSync(options.disableDataSync),
|
||||
use_fsync(options.use_fsync),
|
||||
db_stats_log_interval(options.db_stats_log_interval),
|
||||
db_log_dir(options.db_log_dir),
|
||||
wal_dir(options.wal_dir),
|
||||
delete_obsolete_files_period_micros(
|
||||
options.delete_obsolete_files_period_micros),
|
||||
max_background_compactions(options.max_background_compactions),
|
||||
max_background_flushes(options.max_background_flushes),
|
||||
max_log_file_size(options.max_log_file_size),
|
||||
log_file_time_to_roll(options.log_file_time_to_roll),
|
||||
keep_log_file_num(options.keep_log_file_num),
|
||||
max_manifest_file_size(options.max_manifest_file_size),
|
||||
arena_block_size(options.arena_block_size),
|
||||
WAL_ttl_seconds(options.WAL_ttl_seconds),
|
||||
WAL_size_limit_MB(options.WAL_size_limit_MB),
|
||||
manifest_preallocation_size(options.manifest_preallocation_size),
|
||||
allow_os_buffer(options.allow_os_buffer),
|
||||
allow_mmap_reads(options.allow_mmap_reads),
|
||||
allow_mmap_writes(options.allow_mmap_writes),
|
||||
is_fd_close_on_exec(options.is_fd_close_on_exec),
|
||||
skip_log_error_on_recovery(options.skip_log_error_on_recovery),
|
||||
stats_dump_period_sec(options.stats_dump_period_sec),
|
||||
advise_random_on_open(options.advise_random_on_open),
|
||||
access_hint_on_compaction_start(options.access_hint_on_compaction_start),
|
||||
use_adaptive_mutex(options.use_adaptive_mutex),
|
||||
bytes_per_sync(options.bytes_per_sync) {}
|
||||
|
||||
static const char* const access_hints[] = {
|
||||
"NONE", "NORMAL", "SEQUENTIAL", "WILLNEED"
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue