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error_handler_fs_test.cc
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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.
#ifndef ROCKSDB_LITE
#include "db/db_test_util.h"
#include "port/stack_trace.h"
#include "rocksdb/io_status.h"
#include "rocksdb/perf_context.h"
#include "rocksdb/sst_file_manager.h"
#include "test_util/fault_injection_test_env.h"
#include "test_util/fault_injection_test_fs.h"
#if !defined(ROCKSDB_LITE)
#include "test_util/sync_point.h"
#endif
namespace ROCKSDB_NAMESPACE {
class DBErrorHandlingFSTest : public DBTestBase {
public:
DBErrorHandlingFSTest() : DBTestBase("/db_error_handling_fs_test") {}
std::string GetManifestNameFromLiveFiles() {
std::vector<std::string> live_files;
uint64_t manifest_size;
dbfull()->GetLiveFiles(live_files, &manifest_size, false);
for (auto& file : live_files) {
uint64_t num = 0;
FileType type;
if (ParseFileName(file, &num, &type) && type == kDescriptorFile) {
return file;
}
}
return "";
}
};
class DBErrorHandlingFS : public FileSystemWrapper {
public:
DBErrorHandlingFS()
: FileSystemWrapper(FileSystem::Default()),
trig_no_space(false),
trig_io_error(false) {}
void SetTrigNoSpace() { trig_no_space = true; }
void SetTrigIoError() { trig_io_error = true; }
private:
bool trig_no_space;
bool trig_io_error;
};
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) {}
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 {
if (*auto_recovery && no_auto_recovery_) {
*auto_recovery = false;
}
}
void OnErrorRecoveryCompleted(Status /*old_bg_error*/) override {
InstrumentedMutexLock l(&mutex_);
recovery_complete_ = true;
cv_.SignalAll();
}
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;
}
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_;
FaultInjectionTestFS* fault_fs_;
};
TEST_F(DBErrorHandlingFSTest, FLushWriteError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
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_EQ(s, Status::OK());
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FLushWritRetryableeError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
listener->EnableAutoRecovery(false);
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
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_EQ(s, Status::OK());
Reopen(options);
ASSERT_EQ("val1", Get(Key(1)));
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::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_EQ(s, Status::OK());
Reopen(options);
ASSERT_EQ("val2", Get(Key(2)));
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::kHardError);
SyncPoint::GetInstance()->DisableProcessing();
fault_fs->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_EQ(s, Status::OK());
Reopen(options);
ASSERT_EQ("val3", Get(Key(3)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, ManifestWriteError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
Put(Key(0), "val");
Flush();
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_EQ(s, Status::OK());
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<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
Put(Key(0), "val");
Flush();
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::kHardError);
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->DisableProcessing();
fault_fs->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_EQ(s, Status::OK());
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<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
Put(Key(0), "val");
Flush();
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_EQ(s, Status::OK());
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) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
Put(Key(0), "val");
Put(Key(2), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
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();
Put(Key(1), "val");
// This Flush will trigger a compaction, which will fail when appending to
// the manifest
s = Flush();
ASSERT_EQ(s, Status::OK());
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_EQ(s, Status::OK());
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<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
Put(Key(0), "val");
Put(Key(2), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
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();
Put(Key(1), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
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_EQ(s, Status::OK());
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<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
options.listeners.emplace_back(listener);
Status s;
DestroyAndReopen(options);
Put(Key(0), "va;");
Put(Key(2), "va;");
s = Flush();
ASSERT_EQ(s, Status::OK());
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();
Put(Key(1), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(), ROCKSDB_NAMESPACE::Status::Severity::kHardError);
fault_fs->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_EQ(s, Status::OK());
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, CompactionWriteRetryableError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
options.listeners.emplace_back(listener);
Status s;
DestroyAndReopen(options);
IOStatus error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
Put(Key(0), "va;");
Put(Key(2), "va;");
s = Flush();
ASSERT_EQ(s, Status::OK());
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(
"BackgroundCallCompaction:0",
[&](void*) { fault_fs->SetFilesystemActive(false, error_msg); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
Put(Key(1), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
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_EQ(s, Status::OK());
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, CorruptionError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.level0_file_num_compaction_trigger = 2;
Status s;
DestroyAndReopen(options);
Put(Key(0), "va;");
Put(Key(2), "va;");
s = Flush();
ASSERT_EQ(s, Status::OK());
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();
Put(Key(1), "val");
s = Flush();
ASSERT_EQ(s, Status::OK());
s = dbfull()->TEST_WaitForCompact();
ASSERT_EQ(s.severity(),
ROCKSDB_NAMESPACE::Status::Severity::kUnrecoverableError);
fault_fs->SetFilesystemActive(true);
s = dbfull()->Resume();
ASSERT_NE(s, Status::OK());
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, AutoRecoverFlushError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
listener->EnableAutoRecovery();
DestroyAndReopen(options);
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_EQ(s, Status::OK());
Reopen(options);
ASSERT_EQ("val", Get(Key(0)));
ASSERT_EQ("val", Get(Key(1)));
Destroy(options);
}
TEST_F(DBErrorHandlingFSTest, FailRecoverFlushError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.listeners.emplace_back(listener);
Status s;
listener->EnableAutoRecovery();
DestroyAndReopen(options);
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);
}
TEST_F(DBErrorHandlingFSTest, WALWriteError) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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) {
batch.Put(Key(i), RandomString(&rnd, 1024));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_EQ(dbfull()->Write(wopts, &batch), Status::OK());
};
{
WriteBatch batch;
int write_error = 0;
for (auto i = 100; i < 199; ++i) {
batch.Put(Key(i), RandomString(&rnd, 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();
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<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_env.get();
options.create_if_missing = true;
options.writable_file_max_buffer_size = 32768;
options.listeners.emplace_back(listener);
options.paranoid_checks = true;
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) {
batch.Put(Key(i), RandomString(&rnd, 1024));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_EQ(dbfull()->Write(wopts, &batch), Status::OK());
};
// 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) {
batch.Put(Key(i), RandomString(&rnd, 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;
s = dbfull()->Write(wopts, &batch);
ASSERT_EQ(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
s = dbfull()->Resume();
ASSERT_EQ(s, Status::OK());
{
WriteBatch batch;
for (auto i = 200; i < 300; ++i) {
batch.Put(Key(i), RandomString(&rnd, 1024));
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_EQ(dbfull()->Write(wopts, &batch), Status::OK());
};
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) {
std::shared_ptr<FaultInjectionTestFS> fault_fs(
new FaultInjectionTestFS(FileSystem::Default()));
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
std::shared_ptr<ErrorHandlerFSListener> listener(
new ErrorHandlerFSListener());
Options options = GetDefaultOptions();
options.env = fault_fs_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();
CreateAndReopenWithCF({"one", "two", "three"}, options);
{
WriteBatch batch;
for (auto i = 1; i < 4; ++i) {
for (auto j = 0; j < 100; ++j) {
batch.Put(handles_[i], Key(j), RandomString(&rnd, 1024));
}
}
WriteOptions wopts;
wopts.sync = true;
ASSERT_EQ(dbfull()->Write(wopts, &batch), Status::OK());
};
{
WriteBatch batch;
int write_error = 0;
// Write to one CF
for (auto i = 100; i < 199; ++i) {
batch.Put(handles_[2], Key(i), RandomString(&rnd, 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();
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) {
FaultInjectionTestEnv* def_env = new FaultInjectionTestEnv(Env::Default());
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(FileSystem::Default()));
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;