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rocksdb/db/error_handler_fs_test.cc
Jay Huh 586d78b31e Remove wait_unscheduled from waitForCompact internal API (#11443) 
Summary:
Context:

In pull request https://github.com/facebook/rocksdb/issues/11436, we are introducing a new public API `waitForCompact(const WaitForCompactOptions& wait_for_compact_options)`. This API invokes the internal implementation `waitForCompact(bool wait_unscheduled=false)`. The unscheduled parameter indicates the compactions that are not yet scheduled but are required to process items in the queue.

In certain cases, we are unable to wait for compactions, such as during a shutdown or when background jobs are paused. It is important to return the appropriate status in these scenarios. For all other cases, we should wait for all compaction and flush jobs, including the unscheduled ones. The primary purpose of this new API is to wait until the system has resolved its compaction debt. Currently, the usage of `wait_unscheduled` is limited to test code.

This pull request eliminates the usage of wait_unscheduled. The internal `waitForCompact()` API now waits for unscheduled compactions unless the db is undergoing a shutdown. In the event of a shutdown, the API returns `Status::ShutdownInProgress()`.

Additionally, a new parameter, `abort_on_pause`, has been introduced with a default value of `false`. This parameter addresses the possibility of waiting indefinitely for unscheduled jobs if `PauseBackgroundWork()` was called before `waitForCompact()` is invoked. By setting `abort_on_pause` to `true`, the API will immediately return `Status::Aborted`.

Furthermore, all tests that previously called `waitForCompact(true)` have been fixed.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11443

Test Plan:
Existing tests that involve a shutdown in progress:

- DBCompactionTest::CompactRangeShutdownWhileDelayed
- DBTestWithParam::PreShutdownMultipleCompaction
- DBTestWithParam::PreShutdownCompactionMiddle

Reviewed By: pdillinger

Differential Revision: D45923426

Pulled By: jaykorean

fbshipit-source-id: 7dc93fe6a6841a7d9d2d72866fa647090dba8eae
2023-05-17 18:13:50 -07:00

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "db/db_test_util.h"
#include "file/sst_file_manager_impl.h"
#include "port/stack_trace.h"
#include "rocksdb/io_status.h"
#include "rocksdb/sst_file_manager.h"
#include "test_util/sync_point.h"
#include "util/random.h"
#include "utilities/fault_injection_env.h"
#include "utilities/fault_injection_fs.h"
namespace ROCKSDB_NAMESPACE {
class DBErrorHandlingFSTest : public DBTestBase {
public:
DBErrorHandlingFSTest()
: DBTestBase("db_error_handling_fs_test", /*env_do_fsync=*/true) {
fault_fs_.reset(new FaultInjectionTestFS(env_->GetFileSystem()));
fault_env_.reset(new CompositeEnvWrapper(env_, fault_fs_));
}
std::string GetManifestNameFromLiveFiles() {
std::vector<std::string> live_files;
uint64_t manifest_size;
Status s = dbfull()->GetLiveFiles(live_files, &manifest_size, false);
if (!s.ok()) {
return "";
}
for (auto& file : live_files) {
uint64_t num = 0;
FileType type;
if (ParseFileName(file, &num, &type) && type == kDescriptorFile) {
return file;
}
}
return "";
}
std::shared_ptr<FaultInjectionTestFS> fault_fs_;
std::unique_ptr<Env> fault_env_;
};
class ErrorHandlerFSListener : public EventListener {
public:
ErrorHandlerFSListener()
: mutex_(),
cv_(&mutex_),
no_auto_recovery_(false),
recovery_complete_(false),
file_creation_started_(false),
override_bg_error_(false),
file_count_(0),
fault_fs_(nullptr) {}
~ErrorHandlerFSListener() {
file_creation_error_.PermitUncheckedError();
bg_error_.PermitUncheckedError();
new_bg_error_.PermitUncheckedError();
}
void OnTableFileCreationStarted(
const TableFileCreationBriefInfo& /*ti*/) override {
InstrumentedMutexLock l(&mutex_);
file_creation_started_ = true;
if (file_count_ > 0) {
if (--file_count_ == 0) {
fault_fs_->SetFilesystemActive(false, file_creation_error_);
file_creation_error_ = IOStatus::OK();
}
}
cv_.SignalAll();
}
void OnErrorRecoveryBegin(BackgroundErrorReason /*reason*/, Status bg_error,
bool* auto_recovery) override {
bg_error.PermitUncheckedError();
if (*auto_recovery && no_auto_recovery_) {
*auto_recovery = false;
}
}
void OnErrorRecoveryEnd(const BackgroundErrorRecoveryInfo& info) override {
InstrumentedMutexLock l(&mutex_);
recovery_complete_ = true;
cv_.SignalAll();
new_bg_error_ = info.new_bg_error;
}
bool WaitForRecovery(uint64_t /*abs_time_us*/) {
InstrumentedMutexLock l(&mutex_);
while (!recovery_complete_) {
cv_.Wait(/*abs_time_us*/);
}
if (recovery_complete_) {
recovery_complete_ = false;
return true;
}
return false;
}
void WaitForTableFileCreationStarted(uint64_t /*abs_time_us*/) {
InstrumentedMutexLock l(&mutex_);
while (!file_creation_started_) {
cv_.Wait(/*abs_time_us*/);
}
file_creation_started_ = false;
}
void OnBackgroundError(BackgroundErrorReason /*reason*/,
Status* bg_error) override {
if (override_bg_error_) {
*bg_error = bg_error_;
override_bg_error_ = false;
}
}
void EnableAutoRecovery(bool enable = true) { no_auto_recovery_ = !enable; }
void OverrideBGError(Status bg_err) {
bg_error_ = bg_err;
override_bg_error_ = true;
}
void InjectFileCreationError(FaultInjectionTestFS* fs, int file_count,
IOStatus io_s) {
fault_fs_ = fs;
file_count_ = file_count;
file_creation_error_ = io_s;
}
Status new_bg_error() { return new_bg_error_; }
private:
InstrumentedMutex mutex_;
InstrumentedCondVar cv_;
bool no_auto_recovery_;
bool recovery_complete_;
bool file_creation_started_;
bool override_bg_error_;
int file_count_;
IOStatus file_creation_error_;
Status bg_error_;
Status new_bg_error_;
FaultInjectionTestFS* fault_fs_;
};
TEST_F(DBErrorHandlingFSTest, FLushWriteError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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("FlushJob::Start", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::NoSpace("Out of space"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
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(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
Destroy(options);
}
// All the NoSpace IOError will be handled as the regular BG Error no matter the
// retryable flag is set of not. So the auto resume for retryable IO Error will
// not be triggered. Also, it is mapped as hard error.
TEST_F(DBErrorHandlingFSTest, FLushWriteNoSpaceError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
options.statistics = CreateDBStatistics();
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::NoSpace("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(1), "val1"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
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(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
options.statistics = CreateDBStatistics();
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(1), "val1"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
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_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
Reopen(options);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(Put(Key(2), "val2"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeSyncTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val2", Get(Key(2)));
ASSERT_OK(Put(Key(3), "val3"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeCloseTableFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWriteFileScopeError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("File Scope Data Loss Error");
error_msg.SetDataLoss(true);
error_msg.SetScope(
ROCKSDB_NAMESPACE::IOStatus::IOErrorScope::kIOErrorScopeFile);
error_msg.SetRetryable(false);
ASSERT_OK(Put(Key(1), "val1"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(Put(Key(2), "val2"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeSyncTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val2", Get(Key(2)));
ASSERT_OK(Put(Key(3), "val3"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeCloseTableFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val3", Get(Key(3)));
// not file scope, but retyrable set
error_msg.SetDataLoss(false);
error_msg.SetScope(
ROCKSDB_NAMESPACE::IOStatus::IOErrorScope::kIOErrorScopeFileSystem);
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(3), "val3"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeCloseTableFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Reopen(options);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWALWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
listener->EnableAutoRecovery(false);
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::SyncClosedLogs:Start",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
CreateAndReopenWithCF({"pikachu, sdfsdfsdf"}, options);
WriteOptions wo = WriteOptions();
wo.disableWAL = false;
ASSERT_OK(Put(Key(1), "val1", wo));
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
auto cfh = dbfull()->GetColumnFamilyHandle(1);
s = dbfull()->DropColumnFamily(cfh);
s = dbfull()->Resume();
ASSERT_OK(s);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(Put(Key(3), "val3", wo));
ASSERT_EQ("val3", Get(Key(3)));
s = Flush();
ASSERT_OK(s);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWALAtomicWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
options.atomic_flush = true;
Status s;
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
listener->EnableAutoRecovery(false);
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::SyncClosedLogs:Start",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
CreateAndReopenWithCF({"pikachu, sdfsdfsdf"}, options);
WriteOptions wo = WriteOptions();
wo.disableWAL = false;
ASSERT_OK(Put(Key(1), "val1", wo));
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
auto cfh = dbfull()->GetColumnFamilyHandle(1);
s = dbfull()->DropColumnFamily(cfh);
s = dbfull()->Resume();
ASSERT_OK(s);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(Put(Key(3), "val3", wo));
ASSERT_EQ("val3", Get(Key(3)));
s = Flush();
ASSERT_OK(s);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
// The flush error is injected before we finish the table build
TEST_F(DBErrorHandlingFSTest, FLushWritNoWALRetryableError1) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
options.statistics = CreateDBStatistics();
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(1), "val1", wo));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_OK(Put(Key(2), "val2", wo));
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
ASSERT_EQ("val2", Get(Key(2)));
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_EQ("val2", Get(Key(2)));
ASSERT_OK(Put(Key(3), "val3", wo));
ASSERT_EQ("val3", Get(Key(3)));
s = Flush();
ASSERT_OK(s);
ASSERT_EQ("val3", Get(Key(3)));
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_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
Destroy(options);
}
// The retryable IO error is injected before we sync table
TEST_F(DBErrorHandlingFSTest, FLushWriteNoWALRetryableError2) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(1), "val1", wo));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeSyncTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_OK(Put(Key(2), "val2", wo));
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
ASSERT_EQ("val2", Get(Key(2)));
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_EQ("val2", Get(Key(2)));
ASSERT_OK(Put(Key(3), "val3", wo));
ASSERT_EQ("val3", Get(Key(3)));
s = Flush();
ASSERT_OK(s);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
// The retryable IO error is injected before we close the table file
TEST_F(DBErrorHandlingFSTest, FLushWriteNoWALRetryableError3) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(1), "val1", wo));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeCloseTableFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_OK(Put(Key(2), "val2", wo));
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
ASSERT_EQ("val2", Get(Key(2)));
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_EQ("val2", Get(Key(2)));
ASSERT_OK(Put(Key(3), "val3", wo));
ASSERT_EQ("val3", Get(Key(3)));
s = Flush();
ASSERT_OK(s);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteFileScopeError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("File Scope Data Loss Error");
error_msg.SetDataLoss(true);
error_msg.SetScope(
ROCKSDB_NAMESPACE::IOStatus::IOErrorScope::kIOErrorScopeFile);
error_msg.SetRetryable(false);
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteNoWALRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 0;
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(0), "val", wo));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val", wo));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, DoubleManifestWriteError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
fault_fs_->SetFilesystemActive(true);
// This Resume() will attempt to create a new manifest file and fail again
s = dbfull()->Resume();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
// A successful Resume() will create a new manifest file
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, CompactionManifestWriteError) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
Status s;
std::string old_manifest;
std::string new_manifest;
std::atomic<bool> fail_manifest(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Put(Key(2), "val"));
s = Flush();
ASSERT_OK(s);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
// Wait for flush of 2nd L0 file before starting compaction
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"},
// Wait for compaction to detect manifest write error
{"BackgroundCallCompaction:1", "CompactionManifestWriteError:0"},
// Make compaction thread wait for error to be cleared
{"CompactionManifestWriteError:1",
"DBImpl::BackgroundCallCompaction:FoundObsoleteFiles"},
// Wait for DB instance to clear bg_error before calling
// TEST_WaitForCompact
{"SstFileManagerImpl::ErrorCleared", "CompactionManifestWriteError:2"}});
// trigger manifest write failure in compaction thread
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) { fail_manifest.store(true); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
if (fail_manifest.load()) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
}
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
// This Flush will trigger a compaction, which will fail when appending to
// the manifest
s = Flush();
ASSERT_OK(s);
TEST_SYNC_POINT("CompactionManifestWriteError:0");
// Clear all errors so when the compaction is retried, it will succeed
fault_fs_->SetFilesystemActive(true);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("CompactionManifestWriteError:1");
TEST_SYNC_POINT("CompactionManifestWriteError:2");
s = dbfull()->TEST_WaitForCompact();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
ASSERT_EQ("val", Get(Key(2)));
Close();
}
TEST_F(DBErrorHandlingFSTest, CompactionManifestWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
options.max_bgerror_resume_count = 0;
Status s;
std::string old_manifest;
std::string new_manifest;
std::atomic<bool> fail_manifest(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Put(Key(2), "val"));
s = Flush();
ASSERT_OK(s);
listener->OverrideBGError(Status(error_msg, Status::Severity::kHardError));
listener->EnableAutoRecovery(false);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
// Wait for flush of 2nd L0 file before starting compaction
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"},
// Wait for compaction to detect manifest write error
{"BackgroundCallCompaction:1", "CompactionManifestWriteError:0"},
// Make compaction thread wait for error to be cleared
{"CompactionManifestWriteError:1",
"DBImpl::BackgroundCallCompaction:FoundObsoleteFiles"}});
// trigger manifest write failure in compaction thread
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) { fail_manifest.store(true); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
if (fail_manifest.load()) {
fault_fs_->SetFilesystemActive(false, error_msg);
}
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
TEST_SYNC_POINT("CompactionManifestWriteError:0");
TEST_SYNC_POINT("CompactionManifestWriteError:1");
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
s = dbfull()->Resume();
ASSERT_OK(s);
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
ASSERT_EQ("val", Get(Key(2)));
Close();
}
TEST_F(DBErrorHandlingFSTest, CompactionWriteError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
Status s;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
s = Flush();
ASSERT_OK(s);
listener->OverrideBGError(
Status(Status::NoSpace(), Status::Severity::kHardError));
listener->EnableAutoRecovery(false);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_OK(s);
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, DISABLED_CompactionWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
options.max_bgerror_resume_count = 0;
Status s;
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
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"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::OpenCompactionOutputFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::BackgroundCompaction:Finish",
[&](void*) { CancelAllBackgroundWork(dbfull()); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
s = dbfull()->TEST_GetBGError();
ASSERT_OK(s);
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
s = dbfull()->Resume();
ASSERT_OK(s);
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, DISABLED_CompactionWriteFileScopeError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
options.max_bgerror_resume_count = 0;
Status s;
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("File Scope Data Loss Error");
error_msg.SetDataLoss(true);
error_msg.SetScope(
ROCKSDB_NAMESPACE::IOStatus::IOErrorScope::kIOErrorScopeFile);
error_msg.SetRetryable(false);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
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"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::OpenCompactionOutputFile",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::BackgroundCompaction:Finish",
[&](void*) { CancelAllBackgroundWork(dbfull()); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
s = dbfull()->TEST_GetBGError();
ASSERT_OK(s);
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
s = dbfull()->Resume();
ASSERT_OK(s);
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, CorruptionError) {
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
Status s;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
s = Flush();
ASSERT_OK(s);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) {
fault_fs_->SetFilesystemActive(false,
IOStatus::Corruption("Corruption"));
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(),
ROCKSDB_NAMESPACE::Status::Severity::kUnrecoverableError);
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_NOK(s);
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, AutoRecoverFlushError) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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();
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "val"));
SyncPoint::GetInstance()->SetCallBack("FlushJob::Start", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::NoSpace("Out of space"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
ASSERT_EQ(listener->WaitForRecovery(5000000), true);
s = Put(Key(1), "val");
ASSERT_OK(s);
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(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_EQ(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FailRecoverFlushError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
listener->EnableAutoRecovery();
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "val"));
SyncPoint::GetInstance()->SetCallBack("FlushJob::Start", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::NoSpace("Out of space"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
// We should be able to shutdown the database while auto recovery is going
// on in the background
Close();
DestroyDB(dbname_, options).PermitUncheckedError();
}
TEST_F(DBErrorHandlingFSTest, WALWriteError) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
Status s;
Random rnd(301);
listener->EnableAutoRecovery();
DestroyAndReopen(options);
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 199; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
s = dbfull()->Write(wopts, &batch);
ASSERT_EQ(s, s.NoSpace());
}
SyncPoint::GetInstance()->DisableProcessing();
// `ClearAllCallBacks()` is needed in addition to `DisableProcessing()` to
// drain all callbacks. Otherwise, a pending callback in the background
// could re-disable `fault_fs_` after we enable it below.
SyncPoint::GetInstance()->ClearAllCallBacks();
fault_fs_->SetFilesystemActive(true);
ASSERT_EQ(listener->WaitForRecovery(5000000), true);
for (auto i = 0; i < 199; ++i) {
if (i < 100) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
Reopen(options);
for (auto i = 0; i < 199; ++i) {
if (i < 100) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
Close();
}
TEST_F(DBErrorHandlingFSTest, WALWriteRetryableError) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
options.paranoid_checks = true;
options.max_bgerror_resume_count = 0;
Random rnd(301);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
// For the first batch, write is successful, require sync
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
// For the second batch, the first 2 file Append are successful, then the
// following Append fails due to file system retryable IOError.
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 200; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false, error_msg);
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
Status s = dbfull()->Write(wopts, &batch);
ASSERT_TRUE(s.IsIOError());
}
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
// Data in corrupted WAL are not stored
for (auto i = 0; i < 199; ++i) {
if (i < 100) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
// Resume and write a new batch, should be in the WAL
ASSERT_OK(dbfull()->Resume());
{
WriteBatch batch;
for (auto i = 200; i < 300; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
Reopen(options);
for (auto i = 0; i < 300; ++i) {
if (i < 100 || i >= 200) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
Close();
}
TEST_F(DBErrorHandlingFSTest, MultiCFWALWriteError) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
Random rnd(301);
listener->EnableAutoRecovery();
CreateAndReopenWithCF({"one", "two", "three"}, options);
{
WriteBatch batch;
for (auto i = 1; i < 4; ++i) {
for (auto j = 0; j < 100; ++j) {
ASSERT_OK(batch.Put(handles_[i], Key(j), rnd.RandomString(1024)));
}
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
{
WriteBatch batch;
int write_error = 0;
// Write to one CF
for (auto i = 100; i < 199; ++i) {
ASSERT_OK(batch.Put(handles_[2], Key(i), rnd.RandomString(1024)));
}
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false,
IOStatus::NoSpace("Out of space"));
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
Status s = dbfull()->Write(wopts, &batch);
ASSERT_TRUE(s.IsNoSpace());
}
SyncPoint::GetInstance()->DisableProcessing();
// `ClearAllCallBacks()` is needed in addition to `DisableProcessing()` to
// drain all callbacks. Otherwise, a pending callback in the background
// could re-disable `fault_fs_` after we enable it below.
SyncPoint::GetInstance()->ClearAllCallBacks();
fault_fs_->SetFilesystemActive(true);
ASSERT_EQ(listener->WaitForRecovery(5000000), true);
for (auto i = 1; i < 4; ++i) {
// Every CF should have been flushed
ASSERT_EQ(NumTableFilesAtLevel(0, i), 1);
}
for (auto i = 1; i < 4; ++i) {
for (auto j = 0; j < 199; ++j) {
if (j < 100) {
ASSERT_NE(Get(i, Key(j)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(i, Key(j)), "NOT_FOUND");
}
}
}
ReopenWithColumnFamilies({"default", "one", "two", "three"}, options);
for (auto i = 1; i < 4; ++i) {
for (auto j = 0; j < 199; ++j) {
if (j < 100) {
ASSERT_NE(Get(i, Key(j)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(i, Key(j)), "NOT_FOUND");
}
}
}
Close();
}
TEST_F(DBErrorHandlingFSTest, MultiDBCompactionError) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
FaultInjectionTestEnv* def_env = new FaultInjectionTestEnv(env_);
std::vector<std::unique_ptr<Env>> fault_envs;
std::vector<FaultInjectionTestFS*> fault_fs;
std::vector<Options> options;
std::vector<std::shared_ptr<ErrorHandlerFSListener>> listener;
std::vector<DB*> db;
std::shared_ptr<SstFileManager> sfm(NewSstFileManager(def_env));
int kNumDbInstances = 3;
Random rnd(301);
for (auto i = 0; i < kNumDbInstances; ++i) {
listener.emplace_back(new ErrorHandlerFSListener());
options.emplace_back(GetDefaultOptions());
fault_fs.emplace_back(new FaultInjectionTestFS(env_->GetFileSystem()));
std::shared_ptr<FileSystem> fs(fault_fs.back());
fault_envs.emplace_back(new CompositeEnvWrapper(def_env, fs));
options[i].env = fault_envs.back().get();
options[i].create_if_missing = true;
options[i].level0_file_num_compaction_trigger = 2;
options[i].writable_file_max_buffer_size = 32768;
options[i].listeners.emplace_back(listener[i]);
options[i].sst_file_manager = sfm;
DB* dbptr;
char buf[16];
listener[i]->EnableAutoRecovery();
// Setup for returning error for the 3rd SST, which would be level 1
listener[i]->InjectFileCreationError(fault_fs[i], 3,
IOStatus::NoSpace("Out of space"));
snprintf(buf, sizeof(buf), "_%d", i);
ASSERT_OK(DestroyDB(dbname_ + std::string(buf), options[i]));
ASSERT_OK(DB::Open(options[i], dbname_ + std::string(buf), &dbptr));
db.emplace_back(dbptr);
}
for (auto i = 0; i < kNumDbInstances; ++i) {
WriteBatch batch;
for (auto j = 0; j <= 100; ++j) {
ASSERT_OK(batch.Put(Key(j), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(db[i]->Write(wopts, &batch));
ASSERT_OK(db[i]->Flush(FlushOptions()));
}
def_env->SetFilesystemActive(false, Status::NoSpace("Out of space"));
for (auto i = 0; i < kNumDbInstances; ++i) {
WriteBatch batch;
// Write to one CF
for (auto j = 100; j < 199; ++j) {
ASSERT_OK(batch.Put(Key(j), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(db[i]->Write(wopts, &batch));
ASSERT_OK(db[i]->Flush(FlushOptions()));
}
for (auto i = 0; i < kNumDbInstances; ++i) {
Status s = static_cast<DBImpl*>(db[i])->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), Status::Severity::kSoftError);
fault_fs[i]->SetFilesystemActive(true);
}
def_env->SetFilesystemActive(true);
for (auto i = 0; i < kNumDbInstances; ++i) {
std::string prop;
ASSERT_EQ(listener[i]->WaitForRecovery(5000000), true);
ASSERT_OK(static_cast<DBImpl*>(db[i])->TEST_WaitForCompact());
EXPECT_TRUE(db[i]->GetProperty(
"rocksdb.num-files-at-level" + std::to_string(0), &prop));
EXPECT_EQ(atoi(prop.c_str()), 0);
EXPECT_TRUE(db[i]->GetProperty(
"rocksdb.num-files-at-level" + std::to_string(1), &prop));
EXPECT_EQ(atoi(prop.c_str()), 1);
}
SstFileManagerImpl* sfmImpl =
static_cast_with_check<SstFileManagerImpl>(sfm.get());
sfmImpl->Close();
for (auto i = 0; i < kNumDbInstances; ++i) {
char buf[16];
snprintf(buf, sizeof(buf), "_%d", i);
delete db[i];
fault_fs[i]->SetFilesystemActive(true);
if (getenv("KEEP_DB")) {
printf("DB is still at %s%s\n", dbname_.c_str(), buf);
} else {
ASSERT_OK(DestroyDB(dbname_ + std::string(buf), options[i]));
}
}
options.clear();
sfm.reset();
delete def_env;
}
TEST_F(DBErrorHandlingFSTest, MultiDBVariousErrors) {
if (mem_env_ != nullptr) {
ROCKSDB_GTEST_SKIP("Test requires non-mock environment");
return;
}
FaultInjectionTestEnv* def_env = new FaultInjectionTestEnv(env_);
std::vector<std::unique_ptr<Env>> fault_envs;
std::vector<FaultInjectionTestFS*> fault_fs;
std::vector<Options> options;
std::vector<std::shared_ptr<ErrorHandlerFSListener>> listener;
std::vector<DB*> db;
std::shared_ptr<SstFileManager> sfm(NewSstFileManager(def_env));
int kNumDbInstances = 3;
Random rnd(301);
for (auto i = 0; i < kNumDbInstances; ++i) {
listener.emplace_back(new ErrorHandlerFSListener());
options.emplace_back(GetDefaultOptions());
fault_fs.emplace_back(new FaultInjectionTestFS(env_->GetFileSystem()));
std::shared_ptr<FileSystem> fs(fault_fs.back());
fault_envs.emplace_back(new CompositeEnvWrapper(def_env, fs));
options[i].env = fault_envs.back().get();
options[i].create_if_missing = true;
options[i].level0_file_num_compaction_trigger = 2;
options[i].writable_file_max_buffer_size = 32768;
options[i].listeners.emplace_back(listener[i]);
options[i].sst_file_manager = sfm;
DB* dbptr;
char buf[16];
listener[i]->EnableAutoRecovery();
switch (i) {
case 0:
// Setup for returning error for the 3rd SST, which would be level 1
listener[i]->InjectFileCreationError(fault_fs[i], 3,
IOStatus::NoSpace("Out of space"));
break;
case 1:
// Setup for returning error after the 1st SST, which would result
// in a hard error
listener[i]->InjectFileCreationError(fault_fs[i], 2,
IOStatus::NoSpace("Out of space"));
break;
default:
break;
}
snprintf(buf, sizeof(buf), "_%d", i);
ASSERT_OK(DestroyDB(dbname_ + std::string(buf), options[i]));
ASSERT_OK(DB::Open(options[i], dbname_ + std::string(buf), &dbptr));
db.emplace_back(dbptr);
}
for (auto i = 0; i < kNumDbInstances; ++i) {
WriteBatch batch;
for (auto j = 0; j <= 100; ++j) {
ASSERT_OK(batch.Put(Key(j), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(db[i]->Write(wopts, &batch));
ASSERT_OK(db[i]->Flush(FlushOptions()));
}
def_env->SetFilesystemActive(false, Status::NoSpace("Out of space"));
for (auto i = 0; i < kNumDbInstances; ++i) {
WriteBatch batch;
// Write to one CF
for (auto j = 100; j < 199; ++j) {
ASSERT_OK(batch.Put(Key(j), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(db[i]->Write(wopts, &batch));
if (i != 1) {
ASSERT_OK(db[i]->Flush(FlushOptions()));
} else {
ASSERT_TRUE(db[i]->Flush(FlushOptions()).IsNoSpace());
}
}
for (auto i = 0; i < kNumDbInstances; ++i) {
Status s = static_cast<DBImpl*>(db[i])->TEST_WaitForCompact();
switch (i) {
case 0:
ASSERT_EQ(s.severity(), Status::Severity::kSoftError);
break;
case 1:
ASSERT_EQ(s.severity(), Status::Severity::kHardError);
break;
case 2:
ASSERT_OK(s);
break;
}
fault_fs[i]->SetFilesystemActive(true);
}
def_env->SetFilesystemActive(true);
for (auto i = 0; i < kNumDbInstances; ++i) {
std::string prop;
if (i < 2) {
ASSERT_EQ(listener[i]->WaitForRecovery(5000000), true);
}
if (i == 1) {
ASSERT_OK(static_cast<DBImpl*>(db[i])->TEST_WaitForCompact());
}
EXPECT_TRUE(db[i]->GetProperty(
"rocksdb.num-files-at-level" + std::to_string(0), &prop));
EXPECT_EQ(atoi(prop.c_str()), 0);
EXPECT_TRUE(db[i]->GetProperty(
"rocksdb.num-files-at-level" + std::to_string(1), &prop));
EXPECT_EQ(atoi(prop.c_str()), 1);
}
SstFileManagerImpl* sfmImpl =
static_cast_with_check<SstFileManagerImpl>(sfm.get());
sfmImpl->Close();
for (auto i = 0; i < kNumDbInstances; ++i) {
char buf[16];
snprintf(buf, sizeof(buf), "_%d", i);
fault_fs[i]->SetFilesystemActive(true);
delete db[i];
if (getenv("KEEP_DB")) {
printf("DB is still at %s%s\n", dbname_.c_str(), buf);
} else {
EXPECT_OK(DestroyDB(dbname_ + std::string(buf), options[i]));
}
}
options.clear();
delete def_env;
}
// When Put the KV-pair, the write option is set to disable WAL.
// If retryable error happens in this condition, map the bg error
// to soft error and trigger auto resume. During auto resume, SwitchMemtable
// is disabled to avoid small SST tables. Write can still be applied before
// the bg error is cleaned unless the memtable is full.
TEST_F(DBErrorHandlingFSTest, FLushWritNoWALRetryableErrorAutoRecover1) {
// Activate the FS before the first resume
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
options.statistics = CreateDBStatistics();
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(1), "val1", wo));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"RecoverFromRetryableBGIOError:LoopOut",
"FLushWritNoWALRetryableeErrorAutoRecover1:1"}});
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
TEST_SYNC_POINT("FLushWritNoWALRetryableeErrorAutoRecover1:1");
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_EQ("val1", Get(Key(1)));
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
ASSERT_EQ(3, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_ERROR_COUNT));
ASSERT_EQ(3, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_IO_ERROR_COUNT));
ASSERT_EQ(3, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_BG_RETRYABLE_IO_ERROR_COUNT));
ASSERT_EQ(1, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_LE(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_LE(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
HistogramData autoresume_retry;
options.statistics->histogramData(ERROR_HANDLER_AUTORESUME_RETRY_COUNT,
&autoresume_retry);
ASSERT_GE(autoresume_retry.max, 0);
ASSERT_OK(Put(Key(2), "val2", wo));
s = Flush();
// Since auto resume fails, the bg error is not cleand, flush will
// return the bg_error set before.
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
ASSERT_EQ("val2", Get(Key(2)));
// call auto resume
ASSERT_OK(dbfull()->Resume());
ASSERT_OK(Put(Key(3), "val3", wo));
// After resume is successful, the flush should be ok.
ASSERT_OK(Flush());
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWritNoWALRetryableErrorAutoRecover2) {
// Activate the FS before the first resume
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
options.statistics = CreateDBStatistics();
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(1), "val1", wo));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ("val1", Get(Key(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("val1", Get(Key(1)));
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_EQ(1, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_COUNT));
ASSERT_LE(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_RETRY_TOTAL_COUNT));
ASSERT_LE(0, options.statistics->getAndResetTickerCount(
ERROR_HANDLER_AUTORESUME_SUCCESS_COUNT));
HistogramData autoresume_retry;
options.statistics->histogramData(ERROR_HANDLER_AUTORESUME_RETRY_COUNT,
&autoresume_retry);
ASSERT_GE(autoresume_retry.max, 0);
ASSERT_OK(Put(Key(2), "val2", wo));
s = Flush();
// Since auto resume is successful, the bg error is cleaned, flush will
// be successful.
ASSERT_OK(s);
ASSERT_EQ("val2", Get(Key(2)));
Destroy(options);
}
// Auto resume fromt the flush retryable IO error. Activate the FS before the
// first resume. Resume is successful
TEST_F(DBErrorHandlingFSTest, FLushWritRetryableErrorAutoRecover1) {
// Activate the FS before the first resume
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(1), "val1"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
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("val1", Get(Key(1)));
Reopen(options);
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(Put(Key(2), "val2"));
ASSERT_OK(Flush());
ASSERT_EQ("val2", Get(Key(2)));
Destroy(options);
}
// Auto resume fromt the flush retryable IO error and set the retry limit count.
// Never activate the FS and auto resume should fail at the end
TEST_F(DBErrorHandlingFSTest, FLushWritRetryableErrorAutoRecover2) {
// Fail all the resume and let user to resume
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(1), "val1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"FLushWritRetryableeErrorAutoRecover2:0",
"RecoverFromRetryableBGIOError:BeforeStart"},
{"RecoverFromRetryableBGIOError:LoopOut",
"FLushWritRetryableeErrorAutoRecover2:1"}});
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
TEST_SYNC_POINT("FLushWritRetryableeErrorAutoRecover2:0");
TEST_SYNC_POINT("FLushWritRetryableeErrorAutoRecover2:1");
fault_fs_->SetFilesystemActive(true);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
ASSERT_EQ("val1", Get(Key(1)));
// Auto resume fails due to FS does not recover during resume. User call
// resume manually here.
s = dbfull()->Resume();
ASSERT_EQ("val1", Get(Key(1)));
ASSERT_OK(s);
ASSERT_OK(Put(Key(2), "val2"));
ASSERT_OK(Flush());
ASSERT_EQ("val2", Get(Key(2)));
Destroy(options);
}
// Auto resume fromt the flush retryable IO error and set the retry limit count.
// Fail the first resume and let the second resume be successful.
TEST_F(DBErrorHandlingFSTest, ManifestWriteRetryableErrorAutoRecover) {
// Fail the first resume and let the second resume be successful
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"RecoverFromRetryableBGIOError:BeforeStart",
"ManifestWriteRetryableErrorAutoRecover:0"},
{"ManifestWriteRetryableErrorAutoRecover:1",
"RecoverFromRetryableBGIOError:BeforeWait1"},
{"RecoverFromRetryableBGIOError:RecoverSuccess",
"ManifestWriteRetryableErrorAutoRecover:2"}});
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
TEST_SYNC_POINT("ManifestWriteRetryableErrorAutoRecover:0");
fault_fs_->SetFilesystemActive(true);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("ManifestWriteRetryableErrorAutoRecover:1");
TEST_SYNC_POINT("ManifestWriteRetryableErrorAutoRecover:2");
SyncPoint::GetInstance()->DisableProcessing();
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteNoWALRetryableErrorAutoRecover) {
// Fail the first resume and let the second resume be successful
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
WriteOptions wo = WriteOptions();
wo.disableWAL = true;
ASSERT_OK(Put(Key(0), "val", wo));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val", wo));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"RecoverFromRetryableBGIOError:BeforeStart",
"ManifestWriteNoWALRetryableErrorAutoRecover:0"},
{"ManifestWriteNoWALRetryableErrorAutoRecover:1",
"RecoverFromRetryableBGIOError:BeforeWait1"},
{"RecoverFromRetryableBGIOError:RecoverSuccess",
"ManifestWriteNoWALRetryableErrorAutoRecover:2"}});
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
TEST_SYNC_POINT("ManifestWriteNoWALRetryableErrorAutoRecover:0");
fault_fs_->SetFilesystemActive(true);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("ManifestWriteNoWALRetryableErrorAutoRecover:1");
TEST_SYNC_POINT("ManifestWriteNoWALRetryableErrorAutoRecover:2");
SyncPoint::GetInstance()->DisableProcessing();
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Close();
}
TEST_F(DBErrorHandlingFSTest,
CompactionManifestWriteRetryableErrorAutoRecover) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
std::string old_manifest;
std::string new_manifest;
std::atomic<bool> fail_manifest(false);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Put(Key(2), "val"));
ASSERT_OK(Flush());
listener->OverrideBGError(Status(error_msg, Status::Severity::kHardError));
listener->EnableAutoRecovery(false);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
// Wait for flush of 2nd L0 file before starting compaction
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"},
// Wait for compaction to detect manifest write error
{"BackgroundCallCompaction:1", "CompactionManifestWriteErrorAR:0"},
// Make compaction thread wait for error to be cleared
{"CompactionManifestWriteErrorAR:1",
"DBImpl::BackgroundCallCompaction:FoundObsoleteFiles"},
{"CompactionManifestWriteErrorAR:2",
"RecoverFromRetryableBGIOError:BeforeStart"},
// Fail the first resume, before the wait in resume
{"RecoverFromRetryableBGIOError:BeforeResume0",
"CompactionManifestWriteErrorAR:3"},
// Activate the FS before the second resume
{"CompactionManifestWriteErrorAR:4",
"RecoverFromRetryableBGIOError:BeforeResume1"},
// Wait the auto resume be sucessful
{"RecoverFromRetryableBGIOError:RecoverSuccess",
"CompactionManifestWriteErrorAR:5"}});
// trigger manifest write failure in compaction thread
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) { fail_manifest.store(true); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
if (fail_manifest.load()) {
fault_fs_->SetFilesystemActive(false, error_msg);
}
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:0");
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:1");
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:2");
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:3");
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:4");
TEST_SYNC_POINT("CompactionManifestWriteErrorAR:5");
SyncPoint::GetInstance()->DisableProcessing();
new_manifest = GetManifestNameFromLiveFiles();
ASSERT_NE(new_manifest, old_manifest);
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
ASSERT_EQ("val", Get(Key(2)));
Close();
}
TEST_F(DBErrorHandlingFSTest, CompactionWriteRetryableErrorAutoRecover) {
// 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(
new 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);
Status s;
std::atomic<bool> fail_first(false);
std::atomic<bool> fail_second(true);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
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::OpenCompactionOutputFile", [&](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();
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, WALWriteRetryableErrorAutoRecover1) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
options.paranoid_checks = true;
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
Random rnd(301);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
// For the first batch, write is successful, require sync
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
// For the second batch, the first 2 file Append are successful, then the
// following Append fails due to file system retryable IOError.
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 200; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"WALWriteErrorDone", "RecoverFromRetryableBGIOError:BeforeStart"},
{"RecoverFromRetryableBGIOError:BeforeResume0", "WALWriteError1:0"},
{"WALWriteError1:1", "RecoverFromRetryableBGIOError:BeforeResume1"},
{"RecoverFromRetryableBGIOError:RecoverSuccess", "WALWriteError1:2"}});
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false, error_msg);
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
s = dbfull()->Write(wopts, &batch);
ASSERT_EQ(true, s.IsIOError());
TEST_SYNC_POINT("WALWriteErrorDone");
TEST_SYNC_POINT("WALWriteError1:0");
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("WALWriteError1:1");
TEST_SYNC_POINT("WALWriteError1:2");
}
SyncPoint::GetInstance()->DisableProcessing();
// Data in corrupted WAL are not stored
for (auto i = 0; i < 199; ++i) {
if (i < 100) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
// Resume and write a new batch, should be in the WAL
{
WriteBatch batch;
for (auto i = 200; i < 300; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
Reopen(options);
for (auto i = 0; i < 300; ++i) {
if (i < 100 || i >= 200) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
Close();
}
TEST_F(DBErrorHandlingFSTest, WALWriteRetryableErrorAutoRecover2) {
// Fail the first recover and try second time.
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
options.paranoid_checks = true;
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
Random rnd(301);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
// For the first batch, write is successful, require sync
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
// For the second batch, the first 2 file Append are successful, then the
// following Append fails due to file system retryable IOError.
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 200; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"RecoverFromRetryableBGIOError:BeforeWait0", "WALWriteError2:0"},
{"WALWriteError2:1", "RecoverFromRetryableBGIOError:BeforeWait1"},
{"RecoverFromRetryableBGIOError:RecoverSuccess", "WALWriteError2:2"}});
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false, error_msg);
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
s = dbfull()->Write(wopts, &batch);
ASSERT_EQ(true, s.IsIOError());
TEST_SYNC_POINT("WALWriteError2:0");
fault_fs_->SetFilesystemActive(true);
SyncPoint::GetInstance()->ClearAllCallBacks();
TEST_SYNC_POINT("WALWriteError2:1");
TEST_SYNC_POINT("WALWriteError2:2");
}
SyncPoint::GetInstance()->DisableProcessing();
// Data in corrupted WAL are not stored
for (auto i = 0; i < 199; ++i) {
if (i < 100) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
// Resume and write a new batch, should be in the WAL
{
WriteBatch batch;
for (auto i = 200; i < 300; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
Reopen(options);
for (auto i = 0; i < 300; ++i) {
if (i < 100 || i >= 200) {
ASSERT_NE(Get(Key(i)), "NOT_FOUND");
} else {
ASSERT_EQ(Get(Key(i)), "NOT_FOUND");
}
}
Close();
}
// Fail auto resume from a flush retryable error and verify that
// OnErrorRecoveryEnd listener callback is called
TEST_F(DBErrorHandlingFSTest, FLushWritRetryableErrorAbortRecovery) {
// Activate the FS before the first resume
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.max_bgerror_resume_count = 2;
options.bgerror_resume_retry_interval = 100000; // 0.1 second
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
ASSERT_OK(Put(Key(1), "val1"));
SyncPoint::GetInstance()->SetCallBack(
"BuildTable:BeforeFinishBuildTable",
[&](void*) { fault_fs_->SetFilesystemActive(false, error_msg); });
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kSoftError);
ASSERT_EQ(listener->WaitForRecovery(5000000), true);
ASSERT_EQ(listener->new_bg_error(), Status::Aborted());
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
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> {};
TEST_P(DBErrorHandlingFencingTest, FLushWriteFenced) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.paranoid_checks = GetParam();
Status s;
listener->EnableAutoRecovery(true);
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "val"));
SyncPoint::GetInstance()->SetCallBack("FlushJob::Start", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::IOFenced("IO fenced"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kFatalError);
ASSERT_TRUE(s.IsIOFenced());
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_TRUE(s.IsIOFenced());
Destroy(options);
}
TEST_P(DBErrorHandlingFencingTest, ManifestWriteFenced) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
options.paranoid_checks = GetParam();
Status s;
std::string old_manifest;
std::string new_manifest;
listener->EnableAutoRecovery(true);
DestroyAndReopen(options);
old_manifest = GetManifestNameFromLiveFiles();
ASSERT_OK(Put(Key(0), "val"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(1), "val"));
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::LogAndApply:WriteManifest", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::IOFenced("IO fenced"));
});
SyncPoint::GetInstance()->EnableProcessing();
s = Flush();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kFatalError);
ASSERT_TRUE(s.IsIOFenced());
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_TRUE(s.IsIOFenced());
Close();
}
TEST_P(DBErrorHandlingFencingTest, CompactionWriteFenced) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new 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);
options.paranoid_checks = GetParam();
Status s;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "va;"));
ASSERT_OK(Put(Key(2), "va;"));
s = Flush();
ASSERT_OK(s);
listener->EnableAutoRecovery(true);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::FlushMemTable:FlushMemTableFinished",
"BackgroundCallCompaction:0"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BackgroundCallCompaction:0", [&](void*) {
fault_fs_->SetFilesystemActive(false, IOStatus::IOFenced("IO fenced"));
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put(Key(1), "val"));
s = Flush();
ASSERT_OK(s);
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kFatalError);
ASSERT_TRUE(s.IsIOFenced());
fault_fs_->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_TRUE(s.IsIOFenced());
Destroy(options);
}
TEST_P(DBErrorHandlingFencingTest, WALWriteFenced) {
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_env_.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
options.paranoid_checks = GetParam();
Status s;
Random rnd(301);
listener->EnableAutoRecovery(true);
DestroyAndReopen(options);
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_OK(dbfull()->Write(wopts, &batch));
};
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 199; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
SyncPoint::GetInstance()->SetCallBack(
"WritableFileWriter::Append:BeforePrepareWrite", [&](void*) {
write_error++;
if (write_error > 2) {
fault_fs_->SetFilesystemActive(false,
IOStatus::IOFenced("IO fenced"));
}
});
SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wopts;
wopts.sync = true;
s = dbfull()->Write(wopts, &batch);
ASSERT_TRUE(s.IsIOFenced());
}
SyncPoint::GetInstance()->DisableProcessing();
fault_fs_->SetFilesystemActive(true);
{
WriteBatch batch;
for (auto i = 0; i < 100; ++i) {
ASSERT_OK(batch.Put(Key(i), rnd.RandomString(1024)));
}
WriteOptions wopts;
wopts.sync = true;
s = dbfull()->Write(wopts, &batch);
ASSERT_TRUE(s.IsIOFenced());
}
Close();
}
INSTANTIATE_TEST_CASE_P(DBErrorHandlingFSTest, DBErrorHandlingFencingTest,
::testing::Bool());
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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