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Refactor kill point (#8241)

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Summary:
Refactor kill point to one single class, rather than several extern variables. The intention was to drop unflushed data before killing to simulate some job, and I tried to a pointer to fault ingestion fs to the killing class, but it ended up with harder than I thought. Perhaps we'll need to do this in another way. But I thought the refactoring itself is good so I send it out.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8241

Test Plan: make release and run crash test for a while.

Reviewed By: anand1976

Differential Revision: D28078486

fbshipit-source-id: f9182c1455f52e6851c13f88a21bade63bcec45f
This commit is contained in:
sdong 2021-05-05 15:49:29 -07:00 committed by Facebook GitHub Bot
parent 8948dc8524
commit e19908cba6
12 changed files with 68 additions and 51 deletions
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4
db/version_set.cc
View File

@ -4157,8 +4157,8 @@ Status VersionSet::ProcessManifestWrites(
e->DebugString(true));
break;
}
TEST_KILL_RANDOM("VersionSet::LogAndApply:BeforeAddRecord",
rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("VersionSet::LogAndApply:BeforeAddRecord",
REDUCE_ODDS2);
#ifndef NDEBUG
if (batch_edits.size() > 1 && batch_edits.size() - 1 == idx) {
TEST_SYNC_POINT_CALLBACK(

1
db_stress_tool/db_stress_gflags.cc
View File

@ -473,7 +473,6 @@ DEFINE_int32(kill_random_test, 0,
"probability 1/this");
static const bool FLAGS_kill_random_test_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_kill_random_test, &ValidateInt32Positive);
extern int rocksdb_kill_odds;
DEFINE_string(kill_exclude_prefixes, "",
"If non-empty, kill points with prefix in the list given will be"

9
db_stress_tool/db_stress_test_base.cc
View File

@ -2083,13 +2083,16 @@ void StressTest::PrintEnv() const {
fprintf(stdout, "Memtablerep : %s\n", memtablerep);
fprintf(stdout, "Test kill odd : %d\n", rocksdb_kill_odds);
if (!rocksdb_kill_exclude_prefixes.empty()) {
#ifndef NDEBUG
KillPoint* kp = KillPoint::GetInstance();
fprintf(stdout, "Test kill odd : %d\n", kp->rocksdb_kill_odds);
if (!kp->rocksdb_kill_exclude_prefixes.empty()) {
fprintf(stdout, "Skipping kill points prefixes:\n");
for (auto& p : rocksdb_kill_exclude_prefixes) {
for (auto& p : kp->rocksdb_kill_exclude_prefixes) {
fprintf(stdout, " %s\n", p.c_str());
}
}
#endif
fprintf(stdout, "Periodic Compaction Secs : %" PRIu64 "\n",
FLAGS_periodic_compaction_seconds);
fprintf(stdout, "Compaction TTL : %" PRIu64 "\n",

7
db_stress_tool/db_stress_tool.cc
View File

@ -299,8 +299,11 @@ int db_stress_tool(int argc, char** argv) {
exit(1);
}
rocksdb_kill_odds = FLAGS_kill_random_test;
rocksdb_kill_exclude_prefixes = SplitString(FLAGS_kill_exclude_prefixes);
#ifndef NDEBUG
KillPoint* kp = KillPoint::GetInstance();
kp->rocksdb_kill_odds = FLAGS_kill_random_test;
kp->rocksdb_kill_exclude_prefixes = SplitString(FLAGS_kill_exclude_prefixes);
#endif
unsigned int levels = FLAGS_max_key_len;
std::vector<std::string> weights;

16
env/io_posix.cc vendored
View File

@ -893,7 +893,7 @@ IOStatus PosixMmapReadableFile::InvalidateCache(size_t offset, size_t length) {
* knows enough to skip zero suffixes.
*/
IOStatus PosixMmapFile::UnmapCurrentRegion() {
TEST_KILL_RANDOM("PosixMmapFile::UnmapCurrentRegion:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::UnmapCurrentRegion:0");
if (base_ != nullptr) {
int munmap_status = munmap(base_, limit_ - base_);
if (munmap_status != 0) {
@ -916,7 +916,7 @@ IOStatus PosixMmapFile::UnmapCurrentRegion() {
IOStatus PosixMmapFile::MapNewRegion() {
#ifdef ROCKSDB_FALLOCATE_PRESENT
assert(base_ == nullptr);
TEST_KILL_RANDOM("PosixMmapFile::UnmapCurrentRegion:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::UnmapCurrentRegion:0");
// we can't fallocate with FALLOC_FL_KEEP_SIZE here
if (allow_fallocate_) {
IOSTATS_TIMER_GUARD(allocate_nanos);
@ -931,13 +931,13 @@ IOStatus PosixMmapFile::MapNewRegion() {
}
}
TEST_KILL_RANDOM("PosixMmapFile::Append:1", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::Append:1");
void* ptr = mmap(nullptr, map_size_, PROT_READ | PROT_WRITE, MAP_SHARED, fd_,
file_offset_);
if (ptr == MAP_FAILED) {
return IOStatus::IOError("MMap failed on " + filename_);
}
TEST_KILL_RANDOM("PosixMmapFile::Append:2", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::Append:2");
base_ = reinterpret_cast<char*>(ptr);
limit_ = base_ + map_size_;
@ -958,7 +958,7 @@ IOStatus PosixMmapFile::Msync() {
size_t p1 = TruncateToPageBoundary(last_sync_ - base_);
size_t p2 = TruncateToPageBoundary(dst_ - base_ - 1);
last_sync_ = dst_;
TEST_KILL_RANDOM("PosixMmapFile::Msync:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::Msync:0");
if (msync(base_ + p1, p2 - p1 + page_size_, MS_SYNC) < 0) {
return IOError("While msync", filename_, errno);
}
@ -1011,7 +1011,7 @@ IOStatus PosixMmapFile::Append(const Slice& data, const IOOptions& /*opts*/,
if (!s.ok()) {
return s;
}
TEST_KILL_RANDOM("PosixMmapFile::Append:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::Append:0");
}
size_t n = (left <= avail) ? left : avail;
@ -1109,7 +1109,7 @@ IOStatus PosixMmapFile::Allocate(uint64_t offset, uint64_t len,
IODebugContext* /*dbg*/) {
assert(offset <= static_cast<uint64_t>(std::numeric_limits<off_t>::max()));
assert(len <= static_cast<uint64_t>(std::numeric_limits<off_t>::max()));
TEST_KILL_RANDOM("PosixMmapFile::Allocate:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixMmapFile::Allocate:0");
int alloc_status = 0;
if (allow_fallocate_) {
alloc_status =
@ -1333,7 +1333,7 @@ IOStatus PosixWritableFile::Allocate(uint64_t offset, uint64_t len,
IODebugContext* /*dbg*/) {
assert(offset <= static_cast<uint64_t>(std::numeric_limits<off_t>::max()));
assert(len <= static_cast<uint64_t>(std::numeric_limits<off_t>::max()));
TEST_KILL_RANDOM("PosixWritableFile::Allocate:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("PosixWritableFile::Allocate:0");
IOSTATS_TIMER_GUARD(allocate_nanos);
int alloc_status = 0;
if (allow_fallocate_) {

6
file/filename.cc
View File

@ -385,9 +385,9 @@ IOStatus SetCurrentFile(FileSystem* fs, const std::string& dbname,
IOStatus s = WriteStringToFile(fs, contents.ToString() + "\n", tmp, true);
TEST_SYNC_POINT_CALLBACK("SetCurrentFile:BeforeRename", &s);
if (s.ok()) {
TEST_KILL_RANDOM("SetCurrentFile:0", rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("SetCurrentFile:0", REDUCE_ODDS2);
s = fs->RenameFile(tmp, CurrentFileName(dbname), IOOptions(), nullptr);
TEST_KILL_RANDOM("SetCurrentFile:1", rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("SetCurrentFile:1", REDUCE_ODDS2);
TEST_SYNC_POINT_CALLBACK("SetCurrentFile:AfterRename", &s);
}
if (s.ok()) {
@ -423,7 +423,7 @@ Status SetIdentityFile(Env* env, const std::string& dbname,
IOStatus SyncManifest(const ImmutableDBOptions* db_options,
WritableFileWriter* file) {
TEST_KILL_RANDOM("SyncManifest:0", rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("SyncManifest:0", REDUCE_ODDS2);
StopWatch sw(db_options->clock, db_options->stats, MANIFEST_FILE_SYNC_MICROS);
return file->Sync(db_options->use_fsync);
}

2
file/read_write_util.cc
View File

@ -18,7 +18,7 @@ IOStatus NewWritableFile(FileSystem* fs, const std::string& fname,
std::unique_ptr<FSWritableFile>* result,
const FileOptions& options) {
IOStatus s = fs->NewWritableFile(fname, options, result, nullptr);
TEST_KILL_RANDOM("NewWritableFile:0", rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("NewWritableFile:0", REDUCE_ODDS2);
return s;
}

18
file/writable_file_writer.cc
View File

@ -42,8 +42,7 @@ IOStatus WritableFileWriter::Append(const Slice& data) {
IOStatus s;
pending_sync_ = true;
TEST_KILL_RANDOM("WritableFileWriter::Append:0",
rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("WritableFileWriter::Append:0", REDUCE_ODDS2);
// Calculate the checksum of appended data
UpdateFileChecksum(data);
@ -104,7 +103,7 @@ IOStatus WritableFileWriter::Append(const Slice& data) {
s = WriteBuffered(src, left);
}
TEST_KILL_RANDOM("WritableFileWriter::Append:1", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::Append:1");
if (s.ok()) {
filesize_ += data.size();
}
@ -192,7 +191,7 @@ IOStatus WritableFileWriter::Close() {
}
}
TEST_KILL_RANDOM("WritableFileWriter::Close:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::Close:0");
{
#ifndef ROCKSDB_LITE
FileOperationInfo::StartTimePoint start_ts;
@ -213,7 +212,7 @@ IOStatus WritableFileWriter::Close() {
}
writable_file_.reset();
TEST_KILL_RANDOM("WritableFileWriter::Close:1", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::Close:1");
if (s.ok() && checksum_generator_ != nullptr && !checksum_finalized_) {
checksum_generator_->Finalize();
@ -227,8 +226,7 @@ IOStatus WritableFileWriter::Close() {
// enabled
IOStatus WritableFileWriter::Flush() {
IOStatus s;
TEST_KILL_RANDOM("WritableFileWriter::Flush:0",
rocksdb_kill_odds * REDUCE_ODDS2);
TEST_KILL_RANDOM_WITH_WEIGHT("WritableFileWriter::Flush:0", REDUCE_ODDS2);
if (buf_.CurrentSize() > 0) {
if (use_direct_io()) {
@ -317,14 +315,14 @@ IOStatus WritableFileWriter::Sync(bool use_fsync) {
if (!s.ok()) {
return s;
}
TEST_KILL_RANDOM("WritableFileWriter::Sync:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::Sync:0");
if (!use_direct_io() && pending_sync_) {
s = SyncInternal(use_fsync);
if (!s.ok()) {
return s;
}
}
TEST_KILL_RANDOM("WritableFileWriter::Sync:1", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::Sync:1");
pending_sync_ = false;
return IOStatus::OK();
}
@ -447,7 +445,7 @@ IOStatus WritableFileWriter::WriteBuffered(const char* data, size_t size) {
}
IOSTATS_ADD(bytes_written, allowed);
TEST_KILL_RANDOM("WritableFileWriter::WriteBuffered:0", rocksdb_kill_odds);
TEST_KILL_RANDOM("WritableFileWriter::WriteBuffered:0");
left -= allowed;
src += allowed;

4
port/win/io_win.cc
View File

@ -539,7 +539,7 @@ IOStatus WinMmapFile::Allocate(uint64_t offset, uint64_t len,
const IOOptions& /*options*/,
IODebugContext* /*dbg*/) {
IOStatus status;
TEST_KILL_RANDOM("WinMmapFile::Allocate", rocksdb_kill_odds);
TEST_KILL_RANDOM("WinMmapFile::Allocate");
// Make sure that we reserve an aligned amount of space
// since the reservation block size is driven outside so we want
@ -889,7 +889,7 @@ inline IOStatus WinWritableImpl::SyncImpl(const IOOptions& /*options*/,
inline IOStatus WinWritableImpl::AllocateImpl(uint64_t offset, uint64_t len) {
IOStatus status;
TEST_KILL_RANDOM("WinWritableFile::Allocate", rocksdb_kill_odds);
TEST_KILL_RANDOM("WinWritableFile::Allocate");
// Make sure that we reserve an aligned amount of space
// since the reservation block size is driven outside so we want

1
test_util/sync_point.cc
View File

@ -9,7 +9,6 @@
#include "test_util/sync_point_impl.h"
int rocksdb_kill_odds = 0;
std::vector<std::string> rocksdb_kill_exclude_prefixes;
#ifndef NDEBUG

36
test_util/sync_point.h
View File

@ -13,34 +13,42 @@
#include "rocksdb/rocksdb_namespace.h"
// This is only set from db_stress.cc and for testing only.
// If non-zero, kill at various points in source code with probability 1/this
extern int rocksdb_kill_odds;
// If kill point has a prefix on this list, will skip killing.
extern std::vector<std::string> rocksdb_kill_exclude_prefixes;
#ifdef NDEBUG
// empty in release build
#define TEST_KILL_RANDOM(kill_point, rocksdb_kill_odds)
#define TEST_KILL_RANDOM_WITH_WEIGHT(kill_point, rocksdb_kill_odds_weight)
#define TEST_KILL_RANDOM(kill_point)
#else
namespace ROCKSDB_NAMESPACE {
// Kill the process with probability 1/odds for testing.
extern void TestKillRandom(std::string kill_point, int odds,
const std::string& srcfile, int srcline);
// To avoid crashing always at some frequently executed codepaths (during
// kill random test), use this factor to reduce odds
#define REDUCE_ODDS 2
#define REDUCE_ODDS2 4
#define TEST_KILL_RANDOM(kill_point, rocksdb_kill_odds) \
// A class used to pass when a kill point is reached.
struct KillPoint {
public:
// This is only set from db_stress.cc and for testing only.
// If non-zero, kill at various points in source code with probability 1/this
int rocksdb_kill_odds = 0;
// If kill point has a prefix on this list, will skip killing.
std::vector<std::string> rocksdb_kill_exclude_prefixes;
// Kill the process with probability 1/odds for testing.
void TestKillRandom(std::string kill_point, int odds,
const std::string& srcfile, int srcline);
static KillPoint* GetInstance();
};
#define TEST_KILL_RANDOM_WITH_WEIGHT(kill_point, rocksdb_kill_odds_weight) \
{ \
if (rocksdb_kill_odds > 0) { \
TestKillRandom(kill_point, rocksdb_kill_odds, __FILE__, __LINE__); \
} \
KillPoint::GetInstance()->TestKillRandom( \
kill_point, rocksdb_kill_odds_weight, __FILE__, __LINE__); \
}
#define TEST_KILL_RANDOM(kill_point) TEST_KILL_RANDOM_WITH_WEIGHT(kill_point, 1)
} // namespace ROCKSDB_NAMESPACE
#endif
#ifdef NDEBUG

11
test_util/sync_point_impl.cc
View File

@ -7,9 +7,17 @@
#ifndef NDEBUG
namespace ROCKSDB_NAMESPACE {
KillPoint* KillPoint::GetInstance() {
static KillPoint kp;
return &kp;
}
void TestKillRandom(std::string kill_point, int odds,
void KillPoint::TestKillRandom(std::string kill_point, int odds_weight,
const std::string& srcfile, int srcline) {
if (rocksdb_kill_odds <= 0) {
return;
}
int odds = rocksdb_kill_odds * odds_weight;
for (auto& p : rocksdb_kill_exclude_prefixes) {
if (kill_point.substr(0, p.length()) == p) {
return;
@ -29,7 +37,6 @@ void TestKillRandom(std::string kill_point, int odds,
}
}
void SyncPoint::Data::LoadDependency(const std::vector<SyncPointPair>& dependencies) {
std::lock_guard<std::mutex> lock(mutex_);
successors_.clear();