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Sync manifest file when initializing it

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Summary: Now we don't sync manifest file when initializing it, so DB cannot be safely reopened before the first mem table flush. Fix it by syncing it. This fixes fault_injection_test.

Test Plan: make all check

Reviewers: rven, yhchiang, igor

Reviewed By: igor

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D32001
This commit is contained in:
sdong 2015-01-22 11:43:38 -08:00
parent ae82849bc9
commit 4e48753b73
6 changed files with 24 additions and 13 deletions
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3
db/db_impl.cc
View file

@ -348,6 +348,9 @@ Status DBImpl::NewDB() {
std::string record;
new_db.EncodeTo(&record);
s = log.AddRecord(record);
if (s.ok()) {
s = SyncManifest(env_, &db_options_, log.file());
}
}
if (s.ok()) {
// Make "CURRENT" file that points to the new manifest file.

1
db/db_test.cc
View file

@ -9274,6 +9274,7 @@ TEST(DBTest, WriteSingleThreadEntry) {
}
TEST(DBTest, DisableDataSyncTest) {
env_->sync_counter_.store(0);
// iter 0 -- no sync
// iter 1 -- sync
for (int iter = 0; iter < 2; ++iter) {

3
db/fault_injection_test.cc
View file

@ -511,8 +511,6 @@ TEST(FaultInjectionTest, FaultTest) {
int num_pre_sync = rnd.Uniform(kMaxNumValues);
int num_post_sync = rnd.Uniform(kMaxNumValues);
// TODO(t6007549) Figure out why this fails and then re-enable the test.
#if 0
PartialCompactTestPreFault(num_pre_sync, num_post_sync);
PartialCompactTestReopenWithFault(RESET_DROP_UNSYNCED_DATA,
num_pre_sync,
@ -520,7 +518,6 @@ TEST(FaultInjectionTest, FaultTest) {
NoWriteTestPreFault();
NoWriteTestReopenWithFault(RESET_DROP_UNSYNCED_DATA);
#endif
PartialCompactTestPreFault(num_pre_sync, num_post_sync);
// No new files created so we expect all values since no files will be

13
db/filename.cc
View file

@ -19,6 +19,7 @@
#include "db/dbformat.h"
#include "rocksdb/env.h"
#include "util/logging.h"
#include "util/stop_watch.h"
namespace rocksdb {
@ -329,4 +330,16 @@ Status SetIdentityFile(Env* env, const std::string& dbname) {
return s;
}
Status SyncManifest(Env* env, const DBOptions* db_options, WritableFile* file) {
if (db_options->disableDataSync) {
return Status::OK();
} else if (db_options->use_fsync) {
StopWatch sw(env, db_options->statistics.get(), MANIFEST_FILE_SYNC_MICROS);
return file->Fsync();
} else {
StopWatch sw(env, db_options->statistics.get(), MANIFEST_FILE_SYNC_MICROS);
return file->Sync();
}
}
} // namespace rocksdb

5
db/filename.h
View file

@ -25,6 +25,7 @@ namespace rocksdb {
class Env;
class Directory;
class WritableFile;
enum FileType {
kLogFile,
@ -137,4 +138,8 @@ extern Status SetCurrentFile(Env* env, const std::string& dbname,
// Make the IDENTITY file for the db
extern Status SetIdentityFile(Env* env, const std::string& dbname);
// Sync manifest file `file`.
extern Status SyncManifest(Env* env, const DBOptions* db_options,
WritableFile* file);
} // namespace rocksdb

12
db/version_set.cc
View file

@ -1691,16 +1691,8 @@ Status VersionSet::LogAndApply(ColumnFamilyData* column_family_data,
break;
}
}
if (s.ok() && db_options_->disableDataSync == false) {
if (db_options_->use_fsync) {
StopWatch sw(env_, db_options_->statistics.get(),
MANIFEST_FILE_SYNC_MICROS);
s = descriptor_log_->file()->Fsync();
} else {
StopWatch sw(env_, db_options_->statistics.get(),
MANIFEST_FILE_SYNC_MICROS);
s = descriptor_log_->file()->Sync();
}
if (s.ok()) {
s = SyncManifest(env_, db_options_, descriptor_log_->file());
}
if (!s.ok()) {
Log(InfoLogLevel::ERROR_LEVEL, db_options_->info_log,