Expand auto recovery to background read errors (#9679)

Summary:
Fix and enhance the background error recovery logic to handle the
following situations -
1. Background read errors during flush/compaction (previously was
resulting in unrecoverable state)
2. Fix auto recovery failure on read/write errors during atomic flush.
It was failing due to a bug in setting the resuming_from_bg_err variable
in AtomicFlushMemTablesToOutputFiles.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9679

Test Plan: Add new unit tests in error_handler_fs_test

Reviewed By: riversand963

Differential Revision: D34770097

Pulled By: anand1976

fbshipit-source-id: 136da973a28d684b9c74bdf668519b0cbbbe1742

HISTORY.md

@@ -8,6 +8,7 @@
 * Add support for user-defined timestamps to write-committed transaction without API change. The `TransactionDB` layer APIs do not allow timestamps because we require that all user-defined-timestamps-aware operations go through the `Transaction` APIs.
 * Added BlobDB options to `ldb`
 * `BlockBasedTableOptions::detect_filter_construct_corruption` can now be dynamically configured using `DB::SetOptions`.
+* Automatically recover from retryable read IO errors during backgorund flush/compaction.
 
 ### Bug Fixes
 * Fixed a data race on `versions_` between `DBImpl::ResumeImpl()` and threads waiting for recovery to complete (#9496)
@@ -18,6 +19,7 @@
 * Fixed a race condition for `alive_log_files_` in non-two-write-queues mode. The race is between the write_thread_ in WriteToWAL() and another thread executing `FindObsoleteFiles()`. The race condition will be caught if `__glibcxx_requires_nonempty` is enabled.
 * Fixed a bug that `Iterator::Refresh()` reads stale keys after DeleteRange() performed.
 * Fixed a race condition when disable and re-enable manual compaction.
+* Fixed automatic error recovery failure in atomic flush.
 
 ### Public API changes
 * Remove BlockBasedTableOptions.hash_index_allow_collision which already takes no effect.

db/builder.cc

@@ -318,6 +318,7 @@ Status BuildTable(
 
     // TODO Also check the IO status when create the Iterator.
 
+    TEST_SYNC_POINT("BuildTable:BeforeOutputValidation");
     if (s.ok() && !empty) {
       // Verify that the table is usable
       // We set for_compaction to false and don't OptimizeForCompactionTableRead

db/db_impl/db_impl_compaction_flush.cc

@@ -263,11 +263,6 @@ Status DBImpl::FlushMemTableToOutputFile(
   if (!s.ok() && need_cancel) {
     flush_job.Cancel();
   }
-  IOStatus io_s = IOStatus::OK();
-  io_s = flush_job.io_status();
-  if (s.ok()) {
-    s = io_s;
-  }
 
   if (s.ok()) {
     InstallSuperVersionAndScheduleWork(cfd, superversion_context,
@@ -303,9 +298,7 @@ Status DBImpl::FlushMemTableToOutputFile(
   }
 
   if (!s.ok() && !s.IsShutdownInProgress() && !s.IsColumnFamilyDropped()) {
-    if (!io_s.ok() && !io_s.IsShutdownInProgress() &&
+    if (log_io_s.ok()) {
-        !io_s.IsColumnFamilyDropped()) {
-      assert(log_io_s.ok());
       // Error while writing to MANIFEST.
       // In fact, versions_->io_status() can also be the result of renaming
       // CURRENT file. With current code, it's just difficult to tell. So just
@@ -316,25 +309,20 @@ Status DBImpl::FlushMemTableToOutputFile(
         // error), all the Manifest write will be map to soft error.
         // TODO: kManifestWriteNoWAL and kFlushNoWAL are misleading. Refactor is
         // needed.
-        error_handler_.SetBGError(io_s,
+        error_handler_.SetBGError(s,
                                   BackgroundErrorReason::kManifestWriteNoWAL);
       } else {
         // If WAL sync is successful (either WAL size is 0 or there is no IO
         // error), all the other SST file write errors will be set as
         // kFlushNoWAL.
-        error_handler_.SetBGError(io_s, BackgroundErrorReason::kFlushNoWAL);
+        error_handler_.SetBGError(s, BackgroundErrorReason::kFlushNoWAL);
       }
     } else {
-      if (log_io_s.ok()) {
+      assert(s == log_io_s);
       Status new_bg_error = s;
       error_handler_.SetBGError(new_bg_error, BackgroundErrorReason::kFlush);
     }
   }
-  } else {
-    // If we got here, then we decided not to care about the i_os status (either
-    // from never needing it or ignoring the flush job status
-    io_s.PermitUncheckedError();
-  }
   // If flush ran smoothly and no mempurge happened
   // install new SST file path.
   if (s.ok() && (!switched_to_mempurge)) {
@@ -416,6 +404,7 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
   for (const auto cfd : cfds) {
     assert(cfd->imm()->NumNotFlushed() != 0);
     assert(cfd->imm()->IsFlushPending());
+    assert(cfd->GetFlushReason() == cfds[0]->GetFlushReason());
   }
 #endif /* !NDEBUG */
 
@@ -502,12 +491,10 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
   // exec_status stores the execution status of flush_jobs as
   // <bool /* executed */, Status /* status code */>
   autovector<std::pair<bool, Status>> exec_status;
-  autovector<IOStatus> io_status;
   std::vector<bool> pick_status;
   for (int i = 0; i != num_cfs; ++i) {
     // Initially all jobs are not executed, with status OK.
     exec_status.emplace_back(false, Status::OK());
-    io_status.emplace_back(IOStatus::OK());
     pick_status.push_back(false);
   }
 
@@ -527,7 +514,6 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
           jobs[i]->Run(&logs_with_prep_tracker_, &file_meta[i],
                        &(switched_to_mempurge.at(i)));
       exec_status[i].first = true;
-      io_status[i] = jobs[i]->io_status();
     }
     if (num_cfs > 1) {
       TEST_SYNC_POINT(
@@ -541,7 +527,6 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
         &logs_with_prep_tracker_, file_meta.data() /* &file_meta[0] */,
         switched_to_mempurge.empty() ? nullptr : &(switched_to_mempurge.at(0)));
     exec_status[0].first = true;
-    io_status[0] = jobs[0]->io_status();
 
     Status error_status;
     for (const auto& e : exec_status) {
@@ -560,21 +545,6 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
     s = error_status.ok() ? s : error_status;
   }
 
-  IOStatus io_s = IOStatus::OK();
-  if (io_s.ok()) {
-    IOStatus io_error = IOStatus::OK();
-    for (int i = 0; i != static_cast<int>(io_status.size()); i++) {
-      if (!io_status[i].ok() && !io_status[i].IsShutdownInProgress() &&
-          !io_status[i].IsColumnFamilyDropped()) {
-        io_error = io_status[i];
-      }
-    }
-    io_s = io_error;
-    if (s.ok() && !io_s.ok()) {
-      s = io_s;
-    }
-  }
-
   if (s.IsColumnFamilyDropped()) {
     s = Status::OK();
   }
@@ -647,7 +617,10 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
       return std::make_pair(Status::OK(), !ready);
     };
 
-    bool resuming_from_bg_err = error_handler_.IsDBStopped();
+    bool resuming_from_bg_err =
+        error_handler_.IsDBStopped() ||
+        (cfds[0]->GetFlushReason() == FlushReason::kErrorRecovery ||
+         cfds[0]->GetFlushReason() == FlushReason::kErrorRecoveryRetryFlush);
     while ((!resuming_from_bg_err || error_handler_.GetRecoveryError().ok())) {
       std::pair<Status, bool> res = wait_to_install_func();
 
@@ -662,7 +635,10 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
       }
       atomic_flush_install_cv_.Wait();
 
-      resuming_from_bg_err = error_handler_.IsDBStopped();
+      resuming_from_bg_err =
+          error_handler_.IsDBStopped() ||
+          (cfds[0]->GetFlushReason() == FlushReason::kErrorRecovery ||
+           cfds[0]->GetFlushReason() == FlushReason::kErrorRecoveryRetryFlush);
     }
 
     if (!resuming_from_bg_err) {
@@ -786,8 +762,7 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
   // Need to undo atomic flush if something went wrong, i.e. s is not OK and
   // it is not because of CF drop.
   if (!s.ok() && !s.IsColumnFamilyDropped()) {
-    if (!io_s.ok() && !io_s.IsColumnFamilyDropped()) {
+    if (log_io_s.ok()) {
-      assert(log_io_s.ok());
       // Error while writing to MANIFEST.
       // In fact, versions_->io_status() can also be the result of renaming
       // CURRENT file. With current code, it's just difficult to tell. So just
@@ -798,21 +773,20 @@ Status DBImpl::AtomicFlushMemTablesToOutputFiles(
         // error), all the Manifest write will be map to soft error.
         // TODO: kManifestWriteNoWAL and kFlushNoWAL are misleading. Refactor
         // is needed.
-        error_handler_.SetBGError(io_s,
+        error_handler_.SetBGError(s,
                                   BackgroundErrorReason::kManifestWriteNoWAL);
       } else {
         // If WAL sync is successful (either WAL size is 0 or there is no IO
         // error), all the other SST file write errors will be set as
         // kFlushNoWAL.
-        error_handler_.SetBGError(io_s, BackgroundErrorReason::kFlushNoWAL);
+        error_handler_.SetBGError(s, BackgroundErrorReason::kFlushNoWAL);
       }
     } else {
-      if (log_io_s.ok()) {
+      assert(s == log_io_s);
       Status new_bg_error = s;
       error_handler_.SetBGError(new_bg_error, BackgroundErrorReason::kFlush);
     }
   }
-  }
 
   return s;
 }

db/error_handler.cc

@@ -272,7 +272,7 @@ STATIC_AVOID_DESTRUCTION(const Status, kOkStatus){Status::OK()};
 // This can also get called as part of a recovery operation. In that case, we
 // also track the error separately in recovery_error_ so we can tell in the
 // end whether recovery succeeded or not
-const Status& ErrorHandler::SetBGError(const Status& bg_err,
+const Status& ErrorHandler::HandleKnownErrors(const Status& bg_err,
                                               BackgroundErrorReason reason) {
   db_mutex_->AssertHeld();
   if (bg_err.ok()) {
@@ -382,9 +382,12 @@ const Status& ErrorHandler::SetBGError(const Status& bg_err,
 //    c) all other errors are mapped to hard error.
 // 3) for other cases, SetBGError(const Status& bg_err, BackgroundErrorReason
 //    reason) will be called to handle other error cases.
-const Status& ErrorHandler::SetBGError(const IOStatus& bg_io_err,
+const Status& ErrorHandler::SetBGError(const Status& bg_status,
                                        BackgroundErrorReason reason) {
   db_mutex_->AssertHeld();
+  Status tmp_status = bg_status;
+  IOStatus bg_io_err = status_to_io_status(std::move(tmp_status));
+
   if (bg_io_err.ok()) {
     return kOkStatus;
   }
@@ -483,7 +486,11 @@ const Status& ErrorHandler::SetBGError(const IOStatus& bg_io_err,
     if (bg_error_stats_ != nullptr) {
       RecordTick(bg_error_stats_.get(), ERROR_HANDLER_BG_IO_ERROR_COUNT);
     }
-    return SetBGError(new_bg_io_err, reason);
+    // HandleKnownErrors() will use recovery_error_, so ignore
+    // recovery_io_error_.
+    // TODO: Do some refactoring and use only one recovery_error_
+    recovery_io_error_.PermitUncheckedError();
+    return HandleKnownErrors(new_bg_io_err, reason);
   }
 }
 

db/error_handler.h

@@ -53,9 +53,6 @@ class ErrorHandler {
 
    const Status& SetBGError(const Status& bg_err, BackgroundErrorReason reason);
 
-   const Status& SetBGError(const IOStatus& bg_io_err,
-                            BackgroundErrorReason reason);
-
    Status GetBGError() const { return bg_error_; }
 
    Status GetRecoveryError() const { return recovery_error_; }
@@ -112,6 +109,8 @@ class ErrorHandler {
     // The pointer of DB statistics.
     std::shared_ptr<Statistics> bg_error_stats_;
 
+    const Status& HandleKnownErrors(const Status& bg_err,
+                                    BackgroundErrorReason reason);
     Status OverrideNoSpaceError(const Status& bg_error, bool* auto_recovery);
     void RecoverFromNoSpace();
     const Status& StartRecoverFromRetryableBGIOError(const IOStatus& io_error);

db/error_handler_fs_test.cc

@@ -2468,6 +2468,210 @@ TEST_F(DBErrorHandlingFSTest, FLushWritRetryableErrorAbortRecovery) {
   Destroy(options);
 }
 
+TEST_F(DBErrorHandlingFSTest, FlushReadError) {
+  std::shared_ptr<ErrorHandlerFSListener> listener =
+      std::make_shared<ErrorHandlerFSListener>();
+  Options options = GetDefaultOptions();
+  options.env = fault_env_.get();
+  options.create_if_missing = true;
+  options.listeners.emplace_back(listener);
+  options.statistics = CreateDBStatistics();
+  Status s;
+
+  listener->EnableAutoRecovery(false);
+  DestroyAndReopen(options);
+
+  ASSERT_OK(Put(Key(0), "val"));
+  SyncPoint::GetInstance()->SetCallBack(
+      "BuildTable:BeforeOutputValidation", [&](void*) {
+        IOStatus st = IOStatus::IOError();
+        st.SetRetryable(true);
+        st.SetScope(IOStatus::IOErrorScope::kIOErrorScopeFile);
+        fault_fs_->SetFilesystemActive(false, st);
+      });
+  SyncPoint::GetInstance()->SetCallBack(
+      "BuildTable:BeforeDeleteFile",
+      [&](void*) { fault_fs_->SetFilesystemActive(true, IOStatus::OK()); });
+  SyncPoint::GetInstance()->EnableProcessing();
+  s = Flush();
+  ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
+  SyncPoint::GetInstance()->DisableProcessing();
+  fault_fs_->SetFilesystemActive(true);
+  ASSERT_EQ(listener->WaitForRecovery(5000000), true);
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_ERROR_COUNT));
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_IO_ERROR_COUNT));
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
+  ASSERT_LE(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_AUTORESUME_COUNT));
+  ASSERT_LE(0, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
+  s = dbfull()->TEST_GetBGError();
+  ASSERT_OK(s);
+
+  Reopen(GetDefaultOptions());
+  ASSERT_EQ("val", Get(Key(0)));
+}
+
+TEST_F(DBErrorHandlingFSTest, AtomicFlushReadError) {
+  std::shared_ptr<ErrorHandlerFSListener> listener =
+      std::make_shared<ErrorHandlerFSListener>();
+  Options options = GetDefaultOptions();
+  options.env = fault_env_.get();
+  options.create_if_missing = true;
+  options.listeners.emplace_back(listener);
+  options.statistics = CreateDBStatistics();
+  Status s;
+
+  listener->EnableAutoRecovery(false);
+  options.atomic_flush = true;
+  CreateAndReopenWithCF({"pikachu"}, options);
+
+  ASSERT_OK(Put(0, Key(0), "val"));
+  ASSERT_OK(Put(1, Key(0), "val"));
+  SyncPoint::GetInstance()->SetCallBack(
+      "BuildTable:BeforeOutputValidation", [&](void*) {
+        IOStatus st = IOStatus::IOError();
+        st.SetRetryable(true);
+        st.SetScope(IOStatus::IOErrorScope::kIOErrorScopeFile);
+        fault_fs_->SetFilesystemActive(false, st);
+      });
+  SyncPoint::GetInstance()->SetCallBack(
+      "BuildTable:BeforeDeleteFile",
+      [&](void*) { fault_fs_->SetFilesystemActive(true, IOStatus::OK()); });
+  SyncPoint::GetInstance()->EnableProcessing();
+  s = Flush({0, 1});
+  ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
+  SyncPoint::GetInstance()->DisableProcessing();
+  fault_fs_->SetFilesystemActive(true);
+  ASSERT_EQ(listener->WaitForRecovery(5000000), true);
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_ERROR_COUNT));
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_IO_ERROR_COUNT));
+  ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
+  ASSERT_LE(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_AUTORESUME_COUNT));
+  ASSERT_LE(0, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
+  s = dbfull()->TEST_GetBGError();
+  ASSERT_OK(s);
+
+  TryReopenWithColumnFamilies({kDefaultColumnFamilyName, "pikachu"},
+                              GetDefaultOptions());
+  ASSERT_EQ("val", Get(Key(0)));
+}
+
+TEST_F(DBErrorHandlingFSTest, AtomicFlushNoSpaceError) {
+  std::shared_ptr<ErrorHandlerFSListener> listener =
+      std::make_shared<ErrorHandlerFSListener>();
+  Options options = GetDefaultOptions();
+  options.env = fault_env_.get();
+  options.create_if_missing = true;
+  options.listeners.emplace_back(listener);
+  options.statistics = CreateDBStatistics();
+  Status s;
+
+  listener->EnableAutoRecovery(true);
+  options.atomic_flush = true;
+  CreateAndReopenWithCF({"pikachu"}, options);
+
+  ASSERT_OK(Put(0, Key(0), "val"));
+  ASSERT_OK(Put(1, Key(0), "val"));
+  SyncPoint::GetInstance()->SetCallBack("BuildTable:create_file", [&](void*) {
+    IOStatus st = IOStatus::NoSpace();
+    fault_fs_->SetFilesystemActive(false, st);
+  });
+  SyncPoint::GetInstance()->SetCallBack(
+      "BuildTable:BeforeDeleteFile",
+      [&](void*) { fault_fs_->SetFilesystemActive(true, IOStatus::OK()); });
+  SyncPoint::GetInstance()->EnableProcessing();
+  s = Flush({0, 1});
+  ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
+  SyncPoint::GetInstance()->DisableProcessing();
+  fault_fs_->SetFilesystemActive(true);
+  ASSERT_EQ(listener->WaitForRecovery(5000000), true);
+  ASSERT_LE(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_ERROR_COUNT));
+  ASSERT_LE(1, options.statistics->getAndResetTickerCount(
+                   ERROR_HANDLER_BG_IO_ERROR_COUNT));
+  s = dbfull()->TEST_GetBGError();
+  ASSERT_OK(s);
+
+  TryReopenWithColumnFamilies({kDefaultColumnFamilyName, "pikachu"},
+                              GetDefaultOptions());
+  ASSERT_EQ("val", Get(Key(0)));
+}
+
+TEST_F(DBErrorHandlingFSTest, CompactionReadRetryableErrorAutoRecover) {
+  // In this test, in the first round of compaction, the FS is set to error.
+  // So the first compaction fails due to retryable IO error and it is mapped
+  // to soft error. Then, compaction is rescheduled, in the second round of
+  // compaction, the FS is set to active and compaction is successful, so
+  // the test will hit the CompactionJob::FinishCompactionOutputFile1 sync
+  // point.
+  std::shared_ptr<ErrorHandlerFSListener> listener =
+      std::make_shared<ErrorHandlerFSListener>();
+  Options options = GetDefaultOptions();
+  options.env = fault_env_.get();
+  options.create_if_missing = true;
+  options.level0_file_num_compaction_trigger = 2;
+  options.listeners.emplace_back(listener);
+  BlockBasedTableOptions table_options;
+  table_options.no_block_cache = true;
+  options.table_factory.reset(NewBlockBasedTableFactory(table_options));
+  Status s;
+  std::atomic<bool> fail_first(false);
+  std::atomic<bool> fail_second(true);
+  Random rnd(301);
+  DestroyAndReopen(options);
+
+  IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
+  error_msg.SetRetryable(true);
+
+  for (int i = 0; i < 100; ++i) {
+    ASSERT_OK(Put(Key(i), rnd.RandomString(1024)));
+  }
+  s = Flush();
+  ASSERT_OK(s);
+
+  listener->OverrideBGError(Status(error_msg, Status::Severity::kHardError));
+  listener->EnableAutoRecovery(false);
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
+      {{"DBImpl::FlushMemTable:FlushMemTableFinished",
+        "BackgroundCallCompaction:0"},
+       {"CompactionJob::FinishCompactionOutputFile1",
+        "CompactionWriteRetryableErrorAutoRecover0"}});
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
+      "DBImpl::BackgroundCompaction:Start",
+      [&](void*) { fault_fs_->SetFilesystemActive(true); });
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
+      "BackgroundCallCompaction:0", [&](void*) { fail_first.store(true); });
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
+      "CompactionJob::Run():PausingManualCompaction:2", [&](void*) {
+        if (fail_first.load() && fail_second.load()) {
+          fault_fs_->SetFilesystemActive(false, error_msg);
+          fail_second.store(false);
+        }
+      });
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
+
+  ASSERT_OK(Put(Key(1), "val"));
+  s = Flush();
+  ASSERT_OK(s);
+
+  s = dbfull()->TEST_WaitForCompact();
+  ASSERT_OK(s);
+  TEST_SYNC_POINT("CompactionWriteRetryableErrorAutoRecover0");
+  SyncPoint::GetInstance()->ClearAllCallBacks();
+  SyncPoint::GetInstance()->DisableProcessing();
+
+  Reopen(GetDefaultOptions());
+}
+
 class DBErrorHandlingFencingTest : public DBErrorHandlingFSTest,
                                    public testing::WithParamInterface<bool> {};
 

db/flush_job.cc

@@ -136,7 +136,6 @@ FlushJob::FlushJob(
 }
 
 FlushJob::~FlushJob() {
-  io_status_.PermitUncheckedError();
   ThreadStatusUtil::ResetThreadStatus();
 }
 
@@ -290,17 +289,13 @@ Status FlushJob::Run(LogsWithPrepTracker* prep_tracker, FileMetaData* file_meta,
   } else if (write_manifest_) {
     TEST_SYNC_POINT("FlushJob::InstallResults");
     // Replace immutable memtable with the generated Table
-    IOStatus tmp_io_s;
     s = cfd_->imm()->TryInstallMemtableFlushResults(
         cfd_, mutable_cf_options_, mems_, prep_tracker, versions_, db_mutex_,
         meta_.fd.GetNumber(), &job_context_->memtables_to_free, db_directory_,
-        log_buffer_, &committed_flush_jobs_info_, &tmp_io_s,
+        log_buffer_, &committed_flush_jobs_info_,
         !(mempurge_s.ok()) /* write_edit : true if no mempurge happened (or if aborted),
                               but 'false' if mempurge successful: no new min log number
                               or new level 0 file path to write to manifest. */);
-    if (!tmp_io_s.ok()) {
-      io_status_ = tmp_io_s;
-    }
   }
 
   if (s.ok() && file_meta != nullptr) {
@@ -926,9 +921,9 @@ Status FlushJob::WriteLevel0Table() {
           job_context_->job_id, Env::IO_HIGH, &table_properties_, write_hint,
           full_history_ts_low, blob_callback_, &num_input_entries,
           &memtable_payload_bytes, &memtable_garbage_bytes);
-      if (!io_s.ok()) {
+      // TODO: Cleanup io_status in BuildTable and table builders
-        io_status_ = io_s;
+      assert(!s.ok() || io_s.ok());
-      }
+      io_s.PermitUncheckedError();
       if (num_input_entries != total_num_entries && s.ok()) {
         std::string msg = "Expected " + ToString(total_num_entries) +
                           " entries in memtables, but read " +

db/flush_job.h

@@ -93,9 +93,6 @@ class FlushJob {
   }
 #endif  // !ROCKSDB_LITE
 
-  // Return the IO status
-  IOStatus io_status() const { return io_status_; }
-
  private:
   void ReportStartedFlush();
   void ReportFlushInputSize(const autovector<MemTable*>& mems);
@@ -184,7 +181,6 @@ class FlushJob {
   Version* base_;
   bool pick_memtable_called;
   Env::Priority thread_pri_;
-  IOStatus io_status_;
 
   const std::shared_ptr<IOTracer> io_tracer_;
   SystemClock* clock_;

db/memtable_list.cc

@@ -407,7 +407,7 @@ Status MemTableList::TryInstallMemtableFlushResults(
     autovector<MemTable*>* to_delete, FSDirectory* db_directory,
     LogBuffer* log_buffer,
     std::list<std::unique_ptr<FlushJobInfo>>* committed_flush_jobs_info,
-    IOStatus* io_s, bool write_edits) {
+    bool write_edits) {
   AutoThreadOperationStageUpdater stage_updater(
       ThreadStatus::STAGE_MEMTABLE_INSTALL_FLUSH_RESULTS);
   mu->AssertHeld();
@@ -529,7 +529,6 @@ Status MemTableList::TryInstallMemtableFlushResults(
                               db_directory, /*new_descriptor_log=*/false,
                               /*column_family_options=*/nullptr,
                               manifest_write_cb);
-        *io_s = vset->io_status();
       } else {
         // If write_edit is false (e.g: successful mempurge),
         // then remove old memtables, wake up manifest write queue threads,
@@ -545,7 +544,6 @@ Status MemTableList::TryInstallMemtableFlushResults(
         // TODO(bjlemaire): explain full reason WakeUpWaitingManifestWriters
         // needed or investigate more.
         vset->WakeUpWaitingManifestWriters();
-        *io_s = IOStatus::OK();
       }
     }
   }

db/memtable_list.h

@@ -270,7 +270,7 @@ class MemTableList {
       autovector<MemTable*>* to_delete, FSDirectory* db_directory,
       LogBuffer* log_buffer,
       std::list<std::unique_ptr<FlushJobInfo>>* committed_flush_jobs_info,
-      IOStatus* io_s, bool write_edits = true);
+      bool write_edits = true);
 
   // New memtables are inserted at the front of the list.
   // Takes ownership of the referenced held on *m by the caller of Add().

db/memtable_list_test.cc

@@ -124,7 +124,7 @@ class MemTableListTest : public testing::Test {
     std::list<std::unique_ptr<FlushJobInfo>> flush_jobs_info;
     Status s = list->TryInstallMemtableFlushResults(
         cfd, mutable_cf_options, m, &dummy_prep_tracker, &versions, &mutex,
-        file_num, to_delete, nullptr, &log_buffer, &flush_jobs_info, &io_s);
+        file_num, to_delete, nullptr, &log_buffer, &flush_jobs_info);
     EXPECT_OK(io_s);
     return s;
   }