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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
main
sdong 3 years ago committed by Facebook GitHub Bot
parent 8948dc8524
commit e19908cba6
12 changed files with 68 additions and 51 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 4
      db/version_set.cc
  2. 1
      db_stress_tool/db_stress_gflags.cc
  3. 9
      db_stress_tool/db_stress_test_base.cc
  4. 7
      db_stress_tool/db_stress_tool.cc
  5. 16
      env/io_posix.cc
  6. 6
      file/filename.cc
  7. 2
      file/read_write_util.cc
  8. 18
      file/writable_file_writer.cc
  9. 4
      port/win/io_win.cc
  10. 1
      test_util/sync_point.cc
  11. 38
      test_util/sync_point.h
  12. 13
      test_util/sync_point_impl.cc

4
db/version_set.cc
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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
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@ -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

38
test_util/sync_point.h
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@ -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) \
{ \
if (rocksdb_kill_odds > 0) { \
TestKillRandom(kill_point, rocksdb_kill_odds, __FILE__, __LINE__); \
} \
// 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) \
{ \
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

13
test_util/sync_point_impl.cc
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@ -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,
const std::string& srcfile, int srcline) {
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();

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