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Get rid of DBImpl::user_comparator()

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Summary: user_comparator() is a Column Family property, not DBImpl

Test Plan: make check

Reviewers: dhruba, haobo, kailiu, sdong

CC: leveldb

Differential Revision: https://reviews.facebook.net/D15855
main
Igor Canadi 11 years ago
parent 0e22badc08
commit 5e2c4fe766
3 changed files with 20 additions and 24 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 30
      db/db_impl.cc
  2. 8
      db/db_impl.h
  3. 2
      db/db_impl_readonly.cc

30
db/db_impl.cc
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@ -261,7 +261,6 @@ DBImpl::DBImpl(const Options& options, const std::string& dbname)
options_(SanitizeOptions(dbname, &internal_comparator_, options_(SanitizeOptions(dbname, &internal_comparator_,
&internal_filter_policy_, options)), &internal_filter_policy_, options)),
internal_filter_policy_(options.filter_policy), internal_filter_policy_(options.filter_policy),
owns_info_log_(options_.info_log != options.info_log),
db_lock_(nullptr), db_lock_(nullptr),
mutex_(options.use_adaptive_mutex), mutex_(options.use_adaptive_mutex),
shutting_down_(nullptr), shutting_down_(nullptr),
@ -377,7 +376,7 @@ uint64_t DBImpl::TEST_Current_Manifest_FileNo() {
Status DBImpl::NewDB() { Status DBImpl::NewDB() {
VersionEdit new_db; VersionEdit new_db;
new_db.SetComparatorName(user_comparator()->Name()); new_db.SetComparatorName(internal_comparator_.user_comparator()->Name());
new_db.SetLogNumber(0); new_db.SetLogNumber(0);
new_db.SetNextFile(2); new_db.SetNextFile(2);
new_db.SetLastSequence(0); new_db.SetLastSequence(0);
@ -989,7 +988,7 @@ Status DBImpl::RecoverLogFile(uint64_t log_number, SequenceNumber* max_sequence,
auto iter = version_edits.find(cfd->GetID()); auto iter = version_edits.find(cfd->GetID());
assert(iter != version_edits.end()); assert(iter != version_edits.end());
VersionEdit* edit = &iter->second; VersionEdit* edit = &iter->second;
status = WriteLevel0TableForRecovery(cfd->mem(), edit); status = WriteLevel0TableForRecovery(cfd, cfd->mem(), edit);
// we still want to clear the memtable, even if the recovery failed // we still want to clear the memtable, even if the recovery failed
cfd->CreateNewMemtable(); cfd->CreateNewMemtable();
if (!status.ok()) { if (!status.ok()) {
@ -1020,7 +1019,7 @@ Status DBImpl::RecoverLogFile(uint64_t log_number, SequenceNumber* max_sequence,
// flush the final memtable (if non-empty) // flush the final memtable (if non-empty)
if (cfd->mem()->GetFirstSequenceNumber() != 0) { if (cfd->mem()->GetFirstSequenceNumber() != 0) {
status = WriteLevel0TableForRecovery(cfd->mem(), edit); status = WriteLevel0TableForRecovery(cfd, cfd->mem(), edit);
} }
// we still want to clear the memtable, even if the recovery failed // we still want to clear the memtable, even if the recovery failed
cfd->CreateNewMemtable(); cfd->CreateNewMemtable();
@ -1051,7 +1050,8 @@ Status DBImpl::RecoverLogFile(uint64_t log_number, SequenceNumber* max_sequence,
return status; return status;
} }
Status DBImpl::WriteLevel0TableForRecovery(MemTable* mem, VersionEdit* edit) { Status DBImpl::WriteLevel0TableForRecovery(ColumnFamilyData* cfd, MemTable* mem,
VersionEdit* edit) {
mutex_.AssertHeld(); mutex_.AssertHeld();
const uint64_t start_micros = env_->NowMicros(); const uint64_t start_micros = env_->NowMicros();
FileMetaData meta; FileMetaData meta;
@ -1068,9 +1068,8 @@ Status DBImpl::WriteLevel0TableForRecovery(MemTable* mem, VersionEdit* edit) {
{ {
mutex_.Unlock(); mutex_.Unlock();
s = BuildTable(dbname_, env_, options_, storage_options_, s = BuildTable(dbname_, env_, options_, storage_options_,
table_cache_.get(), iter, &meta, table_cache_.get(), iter, &meta, cfd->user_comparator(),
user_comparator(), newest_snapshot, newest_snapshot, earliest_seqno_in_memtable,
earliest_seqno_in_memtable,
GetCompressionFlush(options_)); GetCompressionFlush(options_));
LogFlush(options_.info_log); LogFlush(options_.info_log);
mutex_.Lock(); mutex_.Lock();
@ -1134,9 +1133,9 @@ Status DBImpl::WriteLevel0Table(ColumnFamilyData* cfd,
(unsigned long)meta.number); (unsigned long)meta.number);
s = BuildTable(dbname_, env_, options_, storage_options_, s = BuildTable(dbname_, env_, options_, storage_options_,
table_cache_.get(), iter, &meta, table_cache_.get(), iter, &meta, cfd->user_comparator(),
user_comparator(), newest_snapshot, newest_snapshot, earliest_seqno_in_memtable,
earliest_seqno_in_memtable, GetCompressionFlush(options_)); GetCompressionFlush(options_));
LogFlush(options_.info_log); LogFlush(options_.info_log);
delete iter; delete iter;
Log(options_.info_log, "Level-0 flush table #%lu: %lu bytes %s", Log(options_.info_log, "Level-0 flush table #%lu: %lu bytes %s",
@ -2339,7 +2338,7 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
SequenceNumber visible_in_snapshot = kMaxSequenceNumber; SequenceNumber visible_in_snapshot = kMaxSequenceNumber;
std::string compaction_filter_value; std::string compaction_filter_value;
std::vector<char> delete_key; // for compaction filter std::vector<char> delete_key; // for compaction filter
MergeHelper merge(user_comparator(), options_.merge_operator.get(), MergeHelper merge(cfd->user_comparator(), options_.merge_operator.get(),
options_.info_log.get(), options_.info_log.get(),
false /* internal key corruption is expected */); false /* internal key corruption is expected */);
auto compaction_filter = cfd->options()->compaction_filter; auto compaction_filter = cfd->options()->compaction_filter;
@ -2390,7 +2389,7 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
visible_in_snapshot = kMaxSequenceNumber; visible_in_snapshot = kMaxSequenceNumber;
} else { } else {
if (!has_current_user_key || if (!has_current_user_key ||
user_comparator()->Compare(ikey.user_key, cfd->user_comparator()->Compare(ikey.user_key,
Slice(current_user_key)) != 0) { Slice(current_user_key)) != 0) {
// First occurrence of this user key // First occurrence of this user key
current_user_key.assign(ikey.user_key.data(), ikey.user_key.size()); current_user_key.assign(ikey.user_key.data(), ikey.user_key.size());
@ -2759,7 +2758,7 @@ std::pair<Iterator*, Iterator*> DBImpl::GetTailingIteratorPair(
Iterator* mutable_iter = super_version->mem->NewIterator(options); Iterator* mutable_iter = super_version->mem->NewIterator(options);
// create a DBIter that only uses memtable content; see NewIterator() // create a DBIter that only uses memtable content; see NewIterator()
mutable_iter = NewDBIterator(&dbname_, env_, options_, user_comparator(), mutable_iter = NewDBIterator(&dbname_, env_, options_, cfd->user_comparator(),
mutable_iter, kMaxSequenceNumber); mutable_iter, kMaxSequenceNumber);
std::vector<Iterator*> list; std::vector<Iterator*> list;
@ -2769,7 +2768,8 @@ std::pair<Iterator*, Iterator*> DBImpl::GetTailingIteratorPair(
NewMergingIterator(&cfd->internal_comparator(), &list[0], list.size()); NewMergingIterator(&cfd->internal_comparator(), &list[0], list.size());
// create a DBIter that only uses memtable content; see NewIterator() // create a DBIter that only uses memtable content; see NewIterator()
immutable_iter = NewDBIterator(&dbname_, env_, options_, user_comparator(), immutable_iter =
NewDBIterator(&dbname_, env_, options_, cfd->user_comparator(),
immutable_iter, kMaxSequenceNumber); immutable_iter, kMaxSequenceNumber);
// register cleanups // register cleanups

8
db/db_impl.h
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@ -253,10 +253,6 @@ class DBImpl : public DB {
const InternalKeyComparator internal_comparator_; const InternalKeyComparator internal_comparator_;
const Options options_; // options_.comparator == &internal_comparator_ const Options options_; // options_.comparator == &internal_comparator_
const Comparator* user_comparator() const {
return internal_comparator_.user_comparator();
}
Iterator* NewInternalIterator(const ReadOptions&, ColumnFamilyData* cfd, Iterator* NewInternalIterator(const ReadOptions&, ColumnFamilyData* cfd,
SuperVersion* super_version); SuperVersion* super_version);
@ -294,7 +290,8 @@ class DBImpl : public DB {
// database is opened) and is heavyweight because it holds the mutex // database is opened) and is heavyweight because it holds the mutex
// for the entire period. The second method WriteLevel0Table supports // for the entire period. The second method WriteLevel0Table supports
// concurrent flush memtables to storage. // concurrent flush memtables to storage.
Status WriteLevel0TableForRecovery(MemTable* mem, VersionEdit* edit); Status WriteLevel0TableForRecovery(ColumnFamilyData* cfd, MemTable* mem,
VersionEdit* edit);
Status WriteLevel0Table(ColumnFamilyData* cfd, std::vector<MemTable*>& mems, Status WriteLevel0Table(ColumnFamilyData* cfd, std::vector<MemTable*>& mems,
VersionEdit* edit, uint64_t* filenumber); VersionEdit* edit, uint64_t* filenumber);
@ -375,7 +372,6 @@ class DBImpl : public DB {
// Constant after construction // Constant after construction
const InternalFilterPolicy internal_filter_policy_; const InternalFilterPolicy internal_filter_policy_;
bool owns_info_log_;
// table_cache_ provides its own synchronization // table_cache_ provides its own synchronization
unique_ptr<TableCache> table_cache_; unique_ptr<TableCache> table_cache_;

2
db/db_impl_readonly.cc
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@ -79,7 +79,7 @@ Iterator* DBImplReadOnly::NewIterator(const ReadOptions& options,
SequenceNumber latest_snapshot = versions_->LastSequence(); SequenceNumber latest_snapshot = versions_->LastSequence();
Iterator* internal_iter = NewInternalIterator(options, cfd, super_version); Iterator* internal_iter = NewInternalIterator(options, cfd, super_version);
return NewDBIterator( return NewDBIterator(
&dbname_, env_, options_, user_comparator(), internal_iter, &dbname_, env_, options_, cfd->user_comparator(), internal_iter,
(options.snapshot != nullptr (options.snapshot != nullptr
? reinterpret_cast<const SnapshotImpl*>(options.snapshot)->number_ ? reinterpret_cast<const SnapshotImpl*>(options.snapshot)->number_
: latest_snapshot)); : latest_snapshot));

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