Store FSWritableFilePtr object in WritableFileWriter (#7193)

Summary:
Replace FSWritableFile pointer with FSWritableFilePtr
    object in WritableFileWriter.
    This new object wraps FSWritableFile pointer.

    Objective: If tracing is enabled, FSWritableFile Ptr returns
    FSWritableFileTracingWrapper pointer that includes all necessary
    information in IORecord and calls underlying FileSystem and invokes
    IOTracer to dump that record in a binary file. If tracing is disabled
    then, underlying FileSystem pointer is returned directly.
    FSWritableFilePtr wrapper class is added to bypass the
    FSWritableFileWrapper when
    tracing is disabled.

    Test Plan: make check -j64

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7193

Reviewed By: anand1976

Differential Revision: D23355915

Pulled By: akankshamahajan15

fbshipit-source-id: e62a27a13c1fd77e36a6dbafc7006d969bed25cf

db/blob/blob_file_builder.cc

@@ -167,9 +167,9 @@ Status BlobFileBuilder::OpenBlobFileIfNeeded() {
 
   Statistics* const statistics = immutable_cf_options_->statistics;
 
-  std::unique_ptr<WritableFileWriter> file_writer(
-      new WritableFileWriter(std::move(file), blob_file_path, *file_options_,
-                             env_, statistics, immutable_cf_options_->listeners,
+  std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
+      std::move(file), blob_file_path, *file_options_, env_,
+      nullptr /*IOTracer*/, statistics, immutable_cf_options_->listeners,
       immutable_cf_options_->file_checksum_gen_factory));
 
   std::unique_ptr<BlobLogWriter> blob_log_writer(

db/builder.cc

@@ -83,7 +83,8 @@ Status BuildTable(
     uint64_t sample_for_compression, const CompressionOptions& compression_opts,
     bool paranoid_file_checks, InternalStats* internal_stats,
     TableFileCreationReason reason, IOStatus* io_status,
-    EventLogger* event_logger, int job_id, const Env::IOPriority io_priority,
+    const std::shared_ptr<IOTracer>& io_tracer, EventLogger* event_logger,
+    int job_id, const Env::IOPriority io_priority,
     TableProperties* table_properties, int level, const uint64_t creation_time,
     const uint64_t oldest_key_time, Env::WriteLifeTimeHint write_hint,
     const uint64_t file_creation_time, const std::string& db_id,
@@ -143,8 +144,9 @@ Status BuildTable(
       file->SetWriteLifeTimeHint(write_hint);
 
       file_writer.reset(new WritableFileWriter(
-          std::move(file), fname, file_options, env, ioptions.statistics,
-          ioptions.listeners, ioptions.file_checksum_gen_factory));
+          std::move(file), fname, file_options, env, io_tracer,
+          ioptions.statistics, ioptions.listeners,
+          ioptions.file_checksum_gen_factory));
 
       builder = NewTableBuilder(
           ioptions, mutable_cf_options, internal_comparator,

db/builder.h

@@ -79,7 +79,8 @@ extern Status BuildTable(
     const uint64_t sample_for_compression,
     const CompressionOptions& compression_opts, bool paranoid_file_checks,
     InternalStats* internal_stats, TableFileCreationReason reason,
-    IOStatus* io_status, EventLogger* event_logger = nullptr, int job_id = 0,
+    IOStatus* io_status, const std::shared_ptr<IOTracer>& io_tracer,
+    EventLogger* event_logger = nullptr, int job_id = 0,
     const Env::IOPriority io_priority = Env::IO_HIGH,
     TableProperties* table_properties = nullptr, int level = -1,
     const uint64_t creation_time = 0, const uint64_t oldest_key_time = 0,

db/compaction/compaction_job.cc

@@ -303,6 +303,7 @@ CompactionJob::CompactionJob(
       db_options_(db_options),
       file_options_(file_options),
       env_(db_options.env),
+      io_tracer_(io_tracer),
       fs_(db_options.fs, io_tracer),
       file_options_for_read_(
           fs_->OptimizeForCompactionTableRead(file_options, db_options_)),
@@ -1592,9 +1593,9 @@ Status CompactionJob::OpenCompactionOutputFile(
       sub_compact->compaction->OutputFilePreallocationSize()));
   const auto& listeners =
       sub_compact->compaction->immutable_cf_options()->listeners;
-  sub_compact->outfile.reset(
-      new WritableFileWriter(std::move(writable_file), fname, file_options_,
-                             env_, db_options_.statistics.get(), listeners,
+  sub_compact->outfile.reset(new WritableFileWriter(
+      std::move(writable_file), fname, file_options_, env_, io_tracer_,
+      db_options_.statistics.get(), listeners,
       db_options_.file_checksum_gen_factory.get()));
 
   // If the Column family flag is to only optimize filters for hits,

db/compaction/compaction_job.h

@@ -158,6 +158,7 @@ class CompactionJob {
   const FileOptions file_options_;
 
   Env* env_;
+  std::shared_ptr<IOTracer> io_tracer_;
   FileSystemPtr fs_;
   // env_option optimized for compaction table reads
   FileOptions file_options_for_read_;

db/db_impl/db_impl_compaction_flush.cc

@@ -154,7 +154,7 @@ Status DBImpl::FlushMemTableToOutputFile(
       GetCompressionFlush(*cfd->ioptions(), mutable_cf_options), stats_,
       &event_logger_, mutable_cf_options.report_bg_io_stats,
       true /* sync_output_directory */, true /* write_manifest */, thread_pri,
-      db_id_, db_session_id_);
+      io_tracer_, db_id_, db_session_id_);
   FileMetaData file_meta;
 
   TEST_SYNC_POINT("DBImpl::FlushMemTableToOutputFile:BeforePickMemtables");
@@ -359,7 +359,7 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
         data_dir, GetCompressionFlush(*cfd->ioptions(), mutable_cf_options),
         stats_, &event_logger_, mutable_cf_options.report_bg_io_stats,
         false /* sync_output_directory */, false /* write_manifest */,
-        thread_pri, db_id_, db_session_id_));
+        thread_pri, io_tracer_, db_id_, db_session_id_));
     jobs.back()->PickMemTable();
   }
 

db/db_impl/db_impl_open.cc

@@ -290,8 +290,8 @@ Status DBImpl::NewDB(std::vector<std::string>* new_filenames) {
     file->SetPreallocationBlockSize(
         immutable_db_options_.manifest_preallocation_size);
     std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
-        std::move(file), manifest, file_options, env_, nullptr /* stats */,
-        immutable_db_options_.listeners));
+        std::move(file), manifest, file_options, env_, io_tracer_,
+        nullptr /* stats */, immutable_db_options_.listeners));
     log::Writer log(std::move(file_writer), 0, false);
     std::string record;
     new_db.EncodeTo(&record);
@@ -1330,9 +1330,10 @@ Status DBImpl::WriteLevel0TableForRecovery(int job_id, ColumnFamilyData* cfd,
           mutable_cf_options.sample_for_compression,
           mutable_cf_options.compression_opts, paranoid_file_checks,
           cfd->internal_stats(), TableFileCreationReason::kRecovery, &io_s,
-          &event_logger_, job_id, Env::IO_HIGH, nullptr /* table_properties */,
-          -1 /* level */, current_time, 0 /* oldest_key_time */, write_hint,
-          0 /* file_creation_time */, db_id_, db_session_id_);
+          io_tracer_, &event_logger_, job_id, Env::IO_HIGH,
+          nullptr /* table_properties */, -1 /* level */, current_time,
+          0 /* oldest_key_time */, write_hint, 0 /* file_creation_time */,
+          db_id_, db_session_id_);
       LogFlush(immutable_db_options_.info_log);
       ROCKS_LOG_DEBUG(immutable_db_options_.info_log,
                       "[%s] [WriteLevel0TableForRecovery]"
@@ -1436,9 +1437,9 @@ IOStatus DBImpl::CreateWAL(uint64_t log_file_num, uint64_t recycle_log_number,
     lfile->SetPreallocationBlockSize(preallocate_block_size);
 
     const auto& listeners = immutable_db_options_.listeners;
-    std::unique_ptr<WritableFileWriter> file_writer(
-        new WritableFileWriter(std::move(lfile), log_fname, opt_file_options,
-                               env_, nullptr /* stats */, listeners));
+    std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
+        std::move(lfile), log_fname, opt_file_options, env_, io_tracer_,
+        nullptr /* stats */, listeners));
     *new_log = new log::Writer(std::move(file_writer), log_file_num,
                                immutable_db_options_.recycle_log_file_num > 0,
                                immutable_db_options_.manual_wal_flush);

db/flush_job.cc

@@ -82,23 +82,21 @@ const char* GetFlushReasonString (FlushReason flush_reason) {
   }
 }
 
-FlushJob::FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
+FlushJob::FlushJob(
+    const std::string& dbname, ColumnFamilyData* cfd,
     const ImmutableDBOptions& db_options,
-                   const MutableCFOptions& mutable_cf_options,
-                   const uint64_t* max_memtable_id,
+    const MutableCFOptions& mutable_cf_options, const uint64_t* max_memtable_id,
     const FileOptions& file_options, VersionSet* versions,
-                   InstrumentedMutex* db_mutex,
-                   std::atomic<bool>* shutting_down,
+    InstrumentedMutex* db_mutex, std::atomic<bool>* shutting_down,
     std::vector<SequenceNumber> existing_snapshots,
     SequenceNumber earliest_write_conflict_snapshot,
     SnapshotChecker* snapshot_checker, JobContext* job_context,
     LogBuffer* log_buffer, FSDirectory* db_directory,
-                   FSDirectory* output_file_directory,
-                   CompressionType output_compression, Statistics* stats,
-                   EventLogger* event_logger, bool measure_io_stats,
+    FSDirectory* output_file_directory, CompressionType output_compression,
+    Statistics* stats, EventLogger* event_logger, bool measure_io_stats,
     const bool sync_output_directory, const bool write_manifest,
-                   Env::Priority thread_pri, const std::string& db_id,
-                   const std::string& db_session_id)
+    Env::Priority thread_pri, const std::shared_ptr<IOTracer>& io_tracer,
+    const std::string& db_id, const std::string& db_session_id)
     : dbname_(dbname),
       db_id_(db_id),
       db_session_id_(db_session_id),
@@ -126,7 +124,8 @@ FlushJob::FlushJob(const std::string& dbname, ColumnFamilyData* cfd,
       edit_(nullptr),
       base_(nullptr),
       pick_memtable_called(false),
-      thread_pri_(thread_pri) {
+      thread_pri_(thread_pri),
+      io_tracer_(io_tracer) {
   // Update the thread status to indicate flush.
   ReportStartedFlush();
   TEST_SYNC_POINT("FlushJob::FlushJob()");
@@ -400,7 +399,7 @@ Status FlushJob::WriteLevel0Table() {
           output_compression_, mutable_cf_options_.sample_for_compression,
           mutable_cf_options_.compression_opts,
           mutable_cf_options_.paranoid_file_checks, cfd_->internal_stats(),
-          TableFileCreationReason::kFlush, &io_s, event_logger_,
+          TableFileCreationReason::kFlush, &io_s, io_tracer_, event_logger_,
           job_context_->job_id, Env::IO_HIGH, &table_properties_, 0 /* level */,
           creation_time, oldest_key_time, write_hint, current_time, db_id_,
           db_session_id_);

db/flush_job.h

@@ -72,7 +72,8 @@ class FlushJob {
            CompressionType output_compression, Statistics* stats,
            EventLogger* event_logger, bool measure_io_stats,
            const bool sync_output_directory, const bool write_manifest,
-           Env::Priority thread_pri, const std::string& db_id = "",
+           Env::Priority thread_pri, const std::shared_ptr<IOTracer>& io_tracer,
+           const std::string& db_id = "",
            const std::string& db_session_id = "");
 
   ~FlushJob();
@@ -161,6 +162,8 @@ class FlushJob {
   bool pick_memtable_called;
   Env::Priority thread_pri_;
   IOStatus io_status_;
+
+  const std::shared_ptr<IOTracer> io_tracer_;
 };
 
 }  // namespace ROCKSDB_NAMESPACE

db/flush_job_test.cc

@@ -135,14 +135,14 @@ TEST_F(FlushJobTest, Empty) {
   auto cfd = versions_->GetColumnFamilySet()->GetDefault();
   EventLogger event_logger(db_options_.info_log.get());
   SnapshotChecker* snapshot_checker = nullptr;  // not relavant
-  FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
-                     db_options_, *cfd->GetLatestMutableCFOptions(),
-                     nullptr /* memtable_id */, env_options_, versions_.get(),
-                     &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
-                     snapshot_checker, &job_context, nullptr, nullptr, nullptr,
-                     kNoCompression, nullptr, &event_logger, false,
-                     true /* sync_output_directory */,
-                     true /* write_manifest */, Env::Priority::USER);
+  FlushJob flush_job(
+      dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
+      *cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
+      env_options_, versions_.get(), &mutex_, &shutting_down_, {},
+      kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
+      nullptr, kNoCompression, nullptr, &event_logger, false,
+      true /* sync_output_directory */, true /* write_manifest */,
+      Env::Priority::USER, nullptr /*IOTracer*/);
   {
     InstrumentedMutexLock l(&mutex_);
     flush_job.PickMemTable();
@@ -216,14 +216,14 @@ TEST_F(FlushJobTest, NonEmpty) {
 
   EventLogger event_logger(db_options_.info_log.get());
   SnapshotChecker* snapshot_checker = nullptr;  // not relavant
-  FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
-                     db_options_, *cfd->GetLatestMutableCFOptions(),
-                     nullptr /* memtable_id */, env_options_, versions_.get(),
-                     &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
-                     snapshot_checker, &job_context, nullptr, nullptr, nullptr,
-                     kNoCompression, db_options_.statistics.get(),
-                     &event_logger, true, true /* sync_output_directory */,
-                     true /* write_manifest */, Env::Priority::USER);
+  FlushJob flush_job(
+      dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
+      *cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
+      env_options_, versions_.get(), &mutex_, &shutting_down_, {},
+      kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
+      nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
+      true, true /* sync_output_directory */, true /* write_manifest */,
+      Env::Priority::USER, nullptr /*IOTracer*/);
 
   HistogramData hist;
   FileMetaData file_meta;
@@ -278,14 +278,14 @@ TEST_F(FlushJobTest, FlushMemTablesSingleColumnFamily) {
   assert(memtable_ids.size() == num_mems);
   uint64_t smallest_memtable_id = memtable_ids.front();
   uint64_t flush_memtable_id = smallest_memtable_id + num_mems_to_flush - 1;
-  FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
-                     db_options_, *cfd->GetLatestMutableCFOptions(),
-                     &flush_memtable_id, env_options_, versions_.get(), &mutex_,
-                     &shutting_down_, {}, kMaxSequenceNumber, snapshot_checker,
-                     &job_context, nullptr, nullptr, nullptr, kNoCompression,
+  FlushJob flush_job(
+      dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
+      *cfd->GetLatestMutableCFOptions(), &flush_memtable_id, env_options_,
+      versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
+      snapshot_checker, &job_context, nullptr, nullptr, nullptr, kNoCompression,
       db_options_.statistics.get(), &event_logger, true,
-                     true /* sync_output_directory */,
-                     true /* write_manifest */, Env::Priority::USER);
+      true /* sync_output_directory */, true /* write_manifest */,
+      Env::Priority::USER, nullptr /*IOTracer*/);
   HistogramData hist;
   FileMetaData file_meta;
   mutex_.Lock();
@@ -357,7 +357,7 @@ TEST_F(FlushJobTest, FlushMemtablesMultipleColumnFamilies) {
         &job_context, nullptr, nullptr, nullptr, kNoCompression,
         db_options_.statistics.get(), &event_logger, true,
         false /* sync_output_directory */, false /* write_manifest */,
-        Env::Priority::USER));
+        Env::Priority::USER, nullptr /*IOTracer*/));
     k++;
   }
   HistogramData hist;
@@ -466,14 +466,14 @@ TEST_F(FlushJobTest, Snapshots) {
 
   EventLogger event_logger(db_options_.info_log.get());
   SnapshotChecker* snapshot_checker = nullptr;  // not relavant
-  FlushJob flush_job(dbname_, versions_->GetColumnFamilySet()->GetDefault(),
-                     db_options_, *cfd->GetLatestMutableCFOptions(),
-                     nullptr /* memtable_id */, env_options_, versions_.get(),
-                     &mutex_, &shutting_down_, snapshots, kMaxSequenceNumber,
-                     snapshot_checker, &job_context, nullptr, nullptr, nullptr,
-                     kNoCompression, db_options_.statistics.get(),
-                     &event_logger, true, true /* sync_output_directory */,
-                     true /* write_manifest */, Env::Priority::USER);
+  FlushJob flush_job(
+      dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
+      *cfd->GetLatestMutableCFOptions(), nullptr /* memtable_id */,
+      env_options_, versions_.get(), &mutex_, &shutting_down_, snapshots,
+      kMaxSequenceNumber, snapshot_checker, &job_context, nullptr, nullptr,
+      nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
+      true, true /* sync_output_directory */, true /* write_manifest */,
+      Env::Priority::USER, nullptr /*IOTracer*/);
   mutex_.Lock();
   flush_job.PickMemTable();
   ASSERT_OK(flush_job.Run());

db/repair.cc

@@ -436,11 +436,11 @@ class Repairer {
           cfd->GetID(), cfd->GetName(), {}, kMaxSequenceNumber,
           snapshot_checker, kNoCompression, 0 /* sample_for_compression */,
           CompressionOptions(), false, nullptr /* internal_stats */,
-          TableFileCreationReason::kRecovery, &io_s, nullptr /* event_logger */,
-          0 /* job_id */, Env::IO_HIGH, nullptr /* table_properties */,
-          -1 /* level */, current_time, 0 /* oldest_key_time */, write_hint,
-          0 /* file_creation_time */, "DB Repairer" /* db_id */,
-          db_session_id_);
+          TableFileCreationReason::kRecovery, &io_s, nullptr /*IOTracer*/,
+          nullptr /* event_logger */, 0 /* job_id */, Env::IO_HIGH,
+          nullptr /* table_properties */, -1 /* level */, current_time,
+          0 /* oldest_key_time */, write_hint, 0 /* file_creation_time */,
+          "DB Repairer" /* db_id */, db_session_id_);
       ROCKS_LOG_INFO(db_options_.info_log,
                      "Log #%" PRIu64 ": %d ops saved to Table #%" PRIu64 " %s",
                      log, counter, meta.fd.GetNumber(),

db/version_edit_handler.cc

@@ -16,14 +16,16 @@ namespace ROCKSDB_NAMESPACE {
 VersionEditHandler::VersionEditHandler(
     bool read_only, const std::vector<ColumnFamilyDescriptor>& column_families,
     VersionSet* version_set, bool track_missing_files,
-    bool no_error_if_table_files_missing)
+    bool no_error_if_table_files_missing,
+    const std::shared_ptr<IOTracer>& io_tracer)
     : read_only_(read_only),
       column_families_(column_families),
       status_(),
       version_set_(version_set),
       track_missing_files_(track_missing_files),
       no_error_if_table_files_missing_(no_error_if_table_files_missing),
-      initialized_(false) {
+      initialized_(false),
+      io_tracer_(io_tracer) {
   assert(version_set_ != nullptr);
 }
 
@@ -390,7 +392,7 @@ Status VersionEditHandler::MaybeCreateVersion(const VersionEdit& /*edit*/,
     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(),
+                          *cfd->GetLatestMutableCFOptions(), io_tracer_,
                           version_set_->current_version_number_++);
     s = builder->SaveTo(v->storage_info());
     if (s.ok()) {
@@ -485,10 +487,11 @@ Status VersionEditHandler::ExtractInfoFromVersionEdit(ColumnFamilyData* cfd,
 
 VersionEditHandlerPointInTime::VersionEditHandlerPointInTime(
     bool read_only, const std::vector<ColumnFamilyDescriptor>& column_families,
-    VersionSet* version_set)
+    VersionSet* version_set, const std::shared_ptr<IOTracer>& io_tracer)
     : VersionEditHandler(read_only, column_families, version_set,
                          /*track_missing_files=*/true,
-                         /*no_error_if_table_files_missing=*/true) {}
+                         /*no_error_if_table_files_missing=*/true, io_tracer),
+      io_tracer_(io_tracer) {}
 
 VersionEditHandlerPointInTime::~VersionEditHandlerPointInTime() {
   for (const auto& elem : versions_) {
@@ -573,7 +576,7 @@ Status VersionEditHandlerPointInTime::MaybeCreateVersion(
     assert(builder_iter != builders_.end());
     auto* builder = builder_iter->second->version_builder();
     auto* version = new Version(cfd, version_set_, version_set_->file_options_,
-                                *cfd->GetLatestMutableCFOptions(),
+                                *cfd->GetLatestMutableCFOptions(), io_tracer_,
                                 version_set_->current_version_number_++);
     s = builder->SaveTo(version->storage_info());
     if (s.ok()) {

db/version_edit_handler.h

@@ -36,7 +36,7 @@ class VersionEditHandler {
       bool read_only,
       const std::vector<ColumnFamilyDescriptor>& column_families,
       VersionSet* version_set, bool track_missing_files,
-      bool ignore_missing_files);
+      bool ignore_missing_files, const std::shared_ptr<IOTracer>& io_tracer);
 
   virtual ~VersionEditHandler() {}
 
@@ -95,6 +95,7 @@ class VersionEditHandler {
                                     const VersionEdit& edit);
 
   bool initialized_;
+  std::shared_ptr<IOTracer> io_tracer_;
 };
 
 // A class similar to its base class, i.e. VersionEditHandler.
@@ -108,7 +109,7 @@ class VersionEditHandlerPointInTime : public VersionEditHandler {
   VersionEditHandlerPointInTime(
       bool read_only,
       const std::vector<ColumnFamilyDescriptor>& column_families,
-      VersionSet* version_set);
+      VersionSet* version_set, const std::shared_ptr<IOTracer>& io_tracer);
   ~VersionEditHandlerPointInTime() override;
 
  protected:
@@ -119,6 +120,7 @@ class VersionEditHandlerPointInTime : public VersionEditHandler {
 
  private:
   std::unordered_map<uint32_t, Version*> versions_;
+  std::shared_ptr<IOTracer> io_tracer_;
 };
 
 }  // namespace ROCKSDB_NAMESPACE

db/version_set.cc

@@ -1284,7 +1284,7 @@ Status Version::GetTableProperties(std::shared_ptr<const TableProperties>* tp,
   // pass the magic number check in the footer.
   std::unique_ptr<RandomAccessFileReader> file_reader(
       new RandomAccessFileReader(
-          std::move(file), file_name, nullptr /* env */, nullptr /* IOTracer */,
+          std::move(file), file_name, nullptr /* env */, io_tracer_,
           nullptr /* stats */, 0 /* hist_type */, nullptr /* file_read_hist */,
           nullptr /* rate_limiter */, ioptions->listeners));
   s = ReadTableProperties(
@@ -1750,6 +1750,7 @@ VersionStorageInfo::VersionStorageInfo(
 Version::Version(ColumnFamilyData* column_family_data, VersionSet* vset,
                  const FileOptions& file_opt,
                  const MutableCFOptions mutable_cf_options,
+                 const std::shared_ptr<IOTracer>& io_tracer,
                  uint64_t version_number)
     : env_(vset->env_),
       cfd_(column_family_data),
@@ -1777,7 +1778,8 @@ Version::Version(ColumnFamilyData* column_family_data, VersionSet* vset,
       mutable_cf_options_(mutable_cf_options),
       max_file_size_for_l0_meta_pin_(
           MaxFileSizeForL0MetaPin(mutable_cf_options_)),
-      version_number_(version_number) {}
+      version_number_(version_number),
+      io_tracer_(io_tracer) {}
 
 void Version::Get(const ReadOptions& read_options, const LookupKey& k,
                   PinnableSlice* value, std::string* timestamp, Status* status,
@@ -3805,7 +3807,7 @@ Status VersionSet::ProcessManifestWrites(
       }
       if (version == nullptr) {
         version = new Version(last_writer->cfd, this, file_options_,
-                              last_writer->mutable_cf_options,
+                              last_writer->mutable_cf_options, io_tracer_,
                               current_version_number_++);
         versions.push_back(version);
         mutable_cf_options_ptrs.push_back(&last_writer->mutable_cf_options);
@@ -3962,7 +3964,7 @@ Status VersionSet::ProcessManifestWrites(
 
         std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
             std::move(descriptor_file), descriptor_fname, opt_file_opts, env_,
-            nullptr, db_options_->listeners));
+            io_tracer_, nullptr, db_options_->listeners));
         descriptor_log_.reset(
             new log::Writer(std::move(file_writer), 0, false));
         s = WriteCurrentStateToManifest(curr_state, descriptor_log_.get(),
@@ -4687,7 +4689,7 @@ Status VersionSet::Recover(
       }
 
       Version* v = new Version(cfd, this, file_options_,
-                               *cfd->GetLatestMutableCFOptions(),
+                               *cfd->GetLatestMutableCFOptions(), io_tracer_,
                                current_version_number_++);
       s = builder->SaveTo(v->storage_info());
       if (!s.ok()) {
@@ -4863,8 +4865,8 @@ Status VersionSet::TryRecoverFromOneManifest(
   reporter.status = &s;
   log::Reader reader(nullptr, std::move(manifest_file_reader), &reporter,
                      /*checksum=*/true, /*log_num=*/0);
-  VersionEditHandlerPointInTime handler_pit(read_only, column_families,
-                                            const_cast<VersionSet*>(this));
+  VersionEditHandlerPointInTime handler_pit(
+      read_only, column_families, const_cast<VersionSet*>(this), io_tracer_);
 
   handler_pit.Iterate(reader, &s, db_id);
 
@@ -5242,7 +5244,7 @@ Status VersionSet::DumpManifest(Options& options, std::string& dscname,
       auto builder = builders_iter->second->version_builder();
 
       Version* v = new Version(cfd, this, file_options_,
-                               *cfd->GetLatestMutableCFOptions(),
+                               *cfd->GetLatestMutableCFOptions(), io_tracer_,
                                current_version_number_++);
       s = builder->SaveTo(v->storage_info());
       v->PrepareApply(*cfd->GetLatestMutableCFOptions(), false);
@@ -5881,7 +5883,7 @@ ColumnFamilyData* VersionSet::CreateColumnFamily(
 
   MutableCFOptions dummy_cf_options;
   Version* dummy_versions =
-      new Version(nullptr, this, file_options_, dummy_cf_options);
+      new Version(nullptr, this, file_options_, dummy_cf_options, io_tracer_);
   // Ref() dummy version once so that later we can call Unref() to delete it
   // by avoiding calling "delete" explicitly (~Version is private)
   dummy_versions->Ref();
@@ -5890,7 +5892,7 @@ ColumnFamilyData* VersionSet::CreateColumnFamily(
       cf_options);
 
   Version* v = new Version(new_cfd, this, file_options_,
-                           *new_cfd->GetLatestMutableCFOptions(),
+                           *new_cfd->GetLatestMutableCFOptions(), io_tracer_,
                            current_version_number_++);
 
   // Fill level target base information.
@@ -6079,7 +6081,7 @@ Status ReactiveVersionSet::Recover(
       auto* builder = builders_iter->second->version_builder();
 
       Version* v = new Version(cfd, this, file_options_,
-                               *cfd->GetLatestMutableCFOptions(),
+                               *cfd->GetLatestMutableCFOptions(), io_tracer_,
                                current_version_number_++);
       s = builder->SaveTo(v->storage_info());
 
@@ -6314,7 +6316,7 @@ Status ReactiveVersionSet::ApplyOneVersionEditToBuilder(
 
     if (s.ok()) {
       auto version = new Version(cfd, this, file_options_,
-                                 *cfd->GetLatestMutableCFOptions(),
+                                 *cfd->GetLatestMutableCFOptions(), io_tracer_,
                                  current_version_number_++);
       s = builder->SaveTo(version->storage_info());
       if (s.ok()) {

db/version_set.h

@@ -815,9 +815,12 @@ class Version {
   // A version number that uniquely represents this version. This is
   // used for debugging and logging purposes only.
   uint64_t version_number_;
+  std::shared_ptr<IOTracer> io_tracer_;
 
   Version(ColumnFamilyData* cfd, VersionSet* vset, const FileOptions& file_opt,
-          MutableCFOptions mutable_cf_options, uint64_t version_number = 0);
+          MutableCFOptions mutable_cf_options,
+          const std::shared_ptr<IOTracer>& io_tracer,
+          uint64_t version_number = 0);
 
   ~Version();
 
@@ -1193,7 +1196,7 @@ class VersionSet {
 
     const auto& mutable_cf_options = *cfd->GetLatestMutableCFOptions();
     Version* const version =
-        new Version(cfd, this, file_options_, mutable_cf_options);
+        new Version(cfd, this, file_options_, mutable_cf_options, io_tracer_);
 
     constexpr bool update_stats = false;
     version->PrepareApply(mutable_cf_options, update_stats);

env/file_system_tracer.h

@@ -270,26 +270,38 @@ class FSWritableFileTracingWrapper : public FSWritableFileWrapper {
 // FSWritableFileTracingWrapper when tracing is disabled.
 class FSWritableFilePtr {
  public:
-  FSWritableFilePtr(FSWritableFile* fs, std::shared_ptr<IOTracer> io_tracer)
-      : fs_(fs),
-        io_tracer_(io_tracer),
-        fs_tracer_(new FSWritableFileTracingWrapper(fs_, io_tracer_)) {}
-
-  explicit FSWritableFilePtr(FSWritableFile* fs)
-      : fs_(fs), io_tracer_(nullptr), fs_tracer_(nullptr) {}
+  FSWritableFilePtr(std::unique_ptr<FSWritableFile>&& fs,
+                    const std::shared_ptr<IOTracer>& io_tracer)
+      : fs_(std::move(fs)), io_tracer_(io_tracer) {
+    fs_tracer_.reset(new FSWritableFileTracingWrapper(fs_.get(), io_tracer_));
+  }
 
   FSWritableFile* operator->() const {
     if (io_tracer_ && io_tracer_->is_tracing_enabled()) {
-      return fs_tracer_;
+      return fs_tracer_.get();
     } else {
-      return fs_;
+      return fs_.get();
     }
   }
 
+  FSWritableFile* get() const {
+    if (io_tracer_ && io_tracer_->is_tracing_enabled()) {
+      return fs_tracer_.get();
+    } else {
+      return fs_.get();
+    }
+  }
+
+  void reset() {
+    fs_.reset();
+    fs_tracer_.reset();
+    io_tracer_ = nullptr;
+  }
+
  private:
-  FSWritableFile* fs_;
+  std::unique_ptr<FSWritableFile> fs_;
   std::shared_ptr<IOTracer> io_tracer_;
-  FSWritableFileTracingWrapper* fs_tracer_;
+  std::unique_ptr<FSWritableFileTracingWrapper> fs_tracer_;
 };
 
 // FSRandomRWFileTracingWrapper is a wrapper class above FSRandomRWFile that

file/writable_file_writer.cc

@@ -129,7 +129,7 @@ IOStatus WritableFileWriter::Close() {
   // in __dtor, simply flushing is not enough
   // Windows when pre-allocating does not fill with zeros
   // also with unbuffered access we also set the end of data.
-  if (!writable_file_) {
+  if (writable_file_.get() == nullptr) {
     return s;
   }
 

file/writable_file_writer.h

@@ -10,7 +10,9 @@
 #pragma once
 #include <atomic>
 #include <string>
+
 #include "db/version_edit.h"
+#include "env/file_system_tracer.h"
 #include "port/port.h"
 #include "rocksdb/env.h"
 #include "rocksdb/file_checksum.h"
@@ -117,8 +119,8 @@ class WritableFileWriter {
   bool ShouldNotifyListeners() const { return !listeners_.empty(); }
   void UpdateFileChecksum(const Slice& data);
 
-  std::unique_ptr<FSWritableFile> writable_file_;
   std::string file_name_;
+  FSWritableFilePtr writable_file_;
   Env* env_;
   AlignedBuffer buf_;
   size_t max_buffer_size_;
@@ -144,11 +146,12 @@ class WritableFileWriter {
   WritableFileWriter(
       std::unique_ptr<FSWritableFile>&& file, const std::string& _file_name,
       const FileOptions& options, Env* env = nullptr,
+      const std::shared_ptr<IOTracer>& io_tracer = nullptr,
       Statistics* stats = nullptr,
       const std::vector<std::shared_ptr<EventListener>>& listeners = {},
       FileChecksumGenFactory* file_checksum_gen_factory = nullptr)
-      : writable_file_(std::move(file)),
-        file_name_(_file_name),
+      : file_name_(_file_name),
+        writable_file_(std::move(file), io_tracer),
         env_(env),
         buf_(),
         max_buffer_size_(options.writable_file_max_buffer_size),

table/sst_file_writer.cc

@@ -255,8 +255,9 @@ Status SstFileWriter::Open(const std::string& file_path) {
       0 /* file_creation_time */, "SST Writer" /* db_id */, db_session_id);
   r->file_writer.reset(new WritableFileWriter(
       NewLegacyWritableFileWrapper(std::move(sst_file)), file_path,
-      r->env_options, r->ioptions.env, nullptr /* stats */,
-      r->ioptions.listeners, r->ioptions.file_checksum_gen_factory));
+      r->env_options, r->ioptions.env, nullptr /* io_tracer */,
+      nullptr /* stats */, r->ioptions.listeners,
+      r->ioptions.file_checksum_gen_factory));
 
   // TODO(tec) : If table_factory is using compressed block cache, we will
   // be adding the external sst file blocks into it, which is wasteful.