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rocksdb/db/db_with_timestamp_basic_test.cc
Huisheng Liu 9e89ffb776 make iterator return versions between timestamp bounds (#6544) 
Summary:
(Based on Yanqin's idea) Add a new field in readoptions as lower timestamp bound for iterator. When the parameter is not supplied (nullptr), the iterator returns the latest visible version of a record. When it is supplied, the existing timestamp field is the upper bound. Together the two serves as a bounded time window. The iterator returns all versions of a record falling in the window.

SeekRandom perf test (10 minutes) on the same development machine ram drive with the same DB data shows no regression (within marge of error). The test is adapted from https://github.com/facebook/rocksdb/wiki/RocksDB-In-Memory-Workload-Performance-Benchmarks.
base line (commit e860f8840):
seekrandom   : 7.836 micros/op 4082449 ops/sec; (0 of 73481999 found)
This PR:
seekrandom   : 7.764 micros/op 4120935 ops/sec; (0 of 71303999 found)

db_bench --db=r:\rocksdb.github --num_levels=6 --key_size=20 --prefix_size=20 --keys_per_prefix=0 --value_size=100 --cache_size=2147483648 --cache_numshardbits=6 --compression_type=none --compression_ratio=1 --min_level_to_compress=-1 --disable_seek_compaction=1 --hard_rate_limit=2 --write_buffer_size=134217728 --max_write_buffer_number=2 --level0_file_num_compaction_trigger=8 --target_file_size_base=134217728 --max_bytes_for_level_base=1073741824 --disable_wal=0 --wal_dir=r:\rocksdb.github\WAL_LOG --sync=0 --verify_checksum=1 --statistics=0 --stats_per_interval=0 --stats_interval=1048576 --histogram=0 --use_plain_table=1 --open_files=-1 --memtablerep=prefix_hash --bloom_bits=10 --bloom_locality=1 --duration=600 --benchmarks=seekrandom --use_existing_db=1 --num=25000000 --threads=32 --allow_concurrent_memtable_write=0
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6544

Reviewed By: ltamasi

Differential Revision: D20844069

Pulled By: riversand963

fbshipit-source-id: d97f2bf38a323c8c6a68db213b2d3c694b1c1f74
2020-04-10 09:51:58 -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 "port/stack_trace.h"
#include "rocksdb/perf_context.h"
#include "rocksdb/utilities/debug.h"
#include "table/block_based/block_based_table_reader.h"
#include "table/block_based/block_builder.h"
#include "test_util/fault_injection_test_env.h"
#if !defined(ROCKSDB_LITE)
#include "test_util/sync_point.h"
#endif
namespace ROCKSDB_NAMESPACE {
class DBBasicTestWithTimestampBase : public DBTestBase {
public:
explicit DBBasicTestWithTimestampBase(const std::string& dbname)
: DBTestBase(dbname) {}
protected:
static std::string Key1(uint64_t k) {
uint32_t x = 1;
const bool is_little_endian = (*reinterpret_cast<char*>(&x) != 0);
std::string ret;
if (is_little_endian) {
ret.assign(reinterpret_cast<char*>(&k), sizeof(k));
} else {
ret.resize(sizeof(k));
ret[0] = k & 0xff;
ret[1] = (k >> 8) & 0xff;
ret[2] = (k >> 16) & 0xff;
ret[3] = (k >> 24) & 0xff;
ret[4] = (k >> 32) & 0xff;
ret[5] = (k >> 40) & 0xff;
ret[6] = (k >> 48) & 0xff;
ret[7] = (k >> 56) & 0xff;
}
std::reverse(ret.begin(), ret.end());
return ret;
}
class TestComparator : public Comparator {
private:
const Comparator* cmp_without_ts_;
public:
explicit TestComparator(size_t ts_sz)
: Comparator(ts_sz), cmp_without_ts_(nullptr) {
cmp_without_ts_ = BytewiseComparator();
}
const char* Name() const override { return "TestComparator"; }
void FindShortSuccessor(std::string*) const override {}
void FindShortestSeparator(std::string*, const Slice&) const override {}
int Compare(const Slice& a, const Slice& b) const override {
int r = CompareWithoutTimestamp(a, b);
if (r != 0 || 0 == timestamp_size()) {
return r;
}
return -CompareTimestamp(
Slice(a.data() + a.size() - timestamp_size(), timestamp_size()),
Slice(b.data() + b.size() - timestamp_size(), timestamp_size()));
}
using Comparator::CompareWithoutTimestamp;
int CompareWithoutTimestamp(const Slice& a, bool a_has_ts, const Slice& b,
bool b_has_ts) const override {
if (a_has_ts) {
assert(a.size() >= timestamp_size());
}
if (b_has_ts) {
assert(b.size() >= timestamp_size());
}
Slice lhs = a_has_ts ? StripTimestampFromUserKey(a, timestamp_size()) : a;
Slice rhs = b_has_ts ? StripTimestampFromUserKey(b, timestamp_size()) : b;
return cmp_without_ts_->Compare(lhs, rhs);
}
int CompareTimestamp(const Slice& ts1, const Slice& ts2) const override {
if (!ts1.data() && !ts2.data()) {
return 0;
} else if (ts1.data() && !ts2.data()) {
return 1;
} else if (!ts1.data() && ts2.data()) {
return -1;
}
assert(ts1.size() == ts2.size());
uint64_t low1 = 0;
uint64_t low2 = 0;
uint64_t high1 = 0;
uint64_t high2 = 0;
const size_t kSize = ts1.size();
std::unique_ptr<char[]> ts1_buf(new char[kSize]);
memcpy(ts1_buf.get(), ts1.data(), ts1.size());
std::unique_ptr<char[]> ts2_buf(new char[kSize]);
memcpy(ts2_buf.get(), ts2.data(), ts2.size());
Slice ts1_copy = Slice(ts1_buf.get(), kSize);
Slice ts2_copy = Slice(ts2_buf.get(), kSize);
auto* ptr1 = const_cast<Slice*>(&ts1_copy);
auto* ptr2 = const_cast<Slice*>(&ts2_copy);
if (!GetFixed64(ptr1, &low1) || !GetFixed64(ptr1, &high1) ||
!GetFixed64(ptr2, &low2) || !GetFixed64(ptr2, &high2)) {
assert(false);
}
if (high1 < high2) {
return -1;
} else if (high1 > high2) {
return 1;
}
if (low1 < low2) {
return -1;
} else if (low1 > low2) {
return 1;
}
return 0;
}
};
std::string Timestamp(uint64_t low, uint64_t high) {
std::string ts;
PutFixed64(&ts, low);
PutFixed64(&ts, high);
return ts;
}
void CheckIterUserEntry(const Iterator* it, const Slice& expected_key,
const Slice& expected_value,
const Slice& expected_ts) const {
ASSERT_TRUE(it->Valid());
ASSERT_OK(it->status());
ASSERT_EQ(expected_key, it->key());
ASSERT_EQ(expected_value, it->value());
ASSERT_EQ(expected_ts, it->timestamp());
}
void CheckIterEntry(const Iterator* it, const Slice& expected_ukey,
SequenceNumber expected_seq, ValueType expected_val_type,
const Slice& expected_value, const Slice& expected_ts) {
ASSERT_TRUE(it->Valid());
ASSERT_OK(it->status());
std::string ukey_and_ts;
ukey_and_ts.assign(expected_ukey.data(), expected_ukey.size());
ukey_and_ts.append(expected_ts.data(), expected_ts.size());
ParsedInternalKey parsed_ikey(ukey_and_ts, expected_seq, expected_val_type);
std::string ikey;
AppendInternalKey(&ikey, parsed_ikey);
ASSERT_EQ(Slice(ikey), it->key());
if (expected_val_type == kTypeValue) {
ASSERT_EQ(expected_value, it->value());
}
ASSERT_EQ(expected_ts, it->timestamp());
}
};
class DBBasicTestWithTimestamp : public DBBasicTestWithTimestampBase {
public:
DBBasicTestWithTimestamp()
: DBBasicTestWithTimestampBase("db_basic_test_with_timestamp") {}
};
TEST_F(DBBasicTestWithTimestamp, SimpleForwardIterate) {
const int kNumKeysPerFile = 128;
const uint64_t kMaxKey = 1024;
Options options = CurrentOptions();
options.env = env_;
// TODO(yanqin) re-enable auto compaction
options.disable_auto_compactions = true;
options.create_if_missing = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
DestroyAndReopen(options);
const std::vector<uint64_t> start_keys = {1, 0};
const std::vector<std::string> write_timestamps = {Timestamp(1, 0),
Timestamp(3, 0)};
const std::vector<std::string> read_timestamps = {Timestamp(2, 0),
Timestamp(4, 0)};
for (size_t i = 0; i < write_timestamps.size(); ++i) {
WriteOptions write_opts;
Slice write_ts = write_timestamps[i];
write_opts.timestamp = &write_ts;
for (uint64_t key = start_keys[i]; key <= kMaxKey; ++key) {
Status s = db_->Put(write_opts, Key1(key), "value" + std::to_string(i));
ASSERT_OK(s);
}
}
for (size_t i = 0; i < read_timestamps.size(); ++i) {
ReadOptions read_opts;
Slice read_ts = read_timestamps[i];
read_opts.timestamp = &read_ts;
std::unique_ptr<Iterator> it(db_->NewIterator(read_opts));
int count = 0;
uint64_t key = 0;
for (it->Seek(Key1(0)), key = start_keys[i]; it->Valid();
it->Next(), ++count, ++key) {
CheckIterUserEntry(it.get(), Key1(key), "value" + std::to_string(i),
write_timestamps[i]);
}
size_t expected_count = kMaxKey - start_keys[i] + 1;
ASSERT_EQ(expected_count, count);
// SeekToFirst() with lower bound.
// Then iter with lower and upper bounds.
uint64_t l = 0;
uint64_t r = kMaxKey + 1;
while (l < r) {
std::string lb_str = Key1(l);
Slice lb = lb_str;
std::string ub_str = Key1(r);
Slice ub = ub_str;
read_opts.iterate_lower_bound = &lb;
read_opts.iterate_upper_bound = &ub;
it.reset(db_->NewIterator(read_opts));
for (it->SeekToFirst(), key = std::max(l, start_keys[i]), count = 0;
it->Valid(); it->Next(), ++key, ++count) {
CheckIterUserEntry(it.get(), Key1(key), "value" + std::to_string(i),
write_timestamps[i]);
}
ASSERT_EQ(r - std::max(l, start_keys[i]), count);
l += (kMaxKey / 100);
r -= (kMaxKey / 100);
}
}
Close();
}
TEST_F(DBBasicTestWithTimestamp, SimpleForwardIterateLowerTsBound) {
const int kNumKeysPerFile = 128;
const uint64_t kMaxKey = 1024;
Options options = CurrentOptions();
options.env = env_;
options.disable_auto_compactions = true;
options.create_if_missing = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
DestroyAndReopen(options);
const std::vector<std::string> write_timestamps = {Timestamp(1, 0),
Timestamp(3, 0)};
const std::vector<std::string> read_timestamps = {Timestamp(2, 0),
Timestamp(4, 0)};
const std::vector<std::string> read_timestamps_lb = {Timestamp(1, 0),
Timestamp(1, 0)};
for (size_t i = 0; i < write_timestamps.size(); ++i) {
WriteOptions write_opts;
Slice write_ts = write_timestamps[i];
write_opts.timestamp = &write_ts;
for (uint64_t key = 0; key <= kMaxKey; ++key) {
Status s = db_->Put(write_opts, Key1(key), "value" + std::to_string(i));
ASSERT_OK(s);
}
}
for (size_t i = 0; i < read_timestamps.size(); ++i) {
ReadOptions read_opts;
Slice read_ts = read_timestamps[i];
Slice read_ts_lb = read_timestamps_lb[i];
read_opts.timestamp = &read_ts;
read_opts.iter_start_ts = &read_ts_lb;
std::unique_ptr<Iterator> it(db_->NewIterator(read_opts));
int count = 0;
uint64_t key = 0;
for (it->Seek(Key1(0)), key = 0; it->Valid(); it->Next(), ++count, ++key) {
CheckIterUserEntry(it.get(), Key1(key), "value" + std::to_string(i),
write_timestamps[i]);
if (i > 0) {
it->Next();
CheckIterUserEntry(it.get(), Key1(key), "value" + std::to_string(i - 1),
write_timestamps[i - 1]);
}
}
size_t expected_count = kMaxKey + 1;
ASSERT_EQ(expected_count, count);
}
Close();
}
TEST_F(DBBasicTestWithTimestamp, ForwardIterateStartSeqnum) {
const int kNumKeysPerFile = 128;
const uint64_t kMaxKey = 0xffffffffffffffff;
const uint64_t kMinKey = kMaxKey - 1023;
Options options = CurrentOptions();
options.env = env_;
options.create_if_missing = true;
// TODO(yanqin) re-enable auto compaction
options.disable_auto_compactions = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
DestroyAndReopen(options);
std::vector<SequenceNumber> start_seqs;
const int kNumTimestamps = 4;
std::vector<std::string> write_ts_list;
for (int t = 0; t != kNumTimestamps; ++t) {
write_ts_list.push_back(Timestamp(2 * t, /*do not care*/ 17));
}
WriteOptions write_opts;
for (size_t i = 0; i != write_ts_list.size(); ++i) {
Slice write_ts = write_ts_list[i];
write_opts.timestamp = &write_ts;
uint64_t k = kMinKey;
do {
Status s = db_->Put(write_opts, Key1(k), "value" + std::to_string(i));
ASSERT_OK(s);
if (k == kMaxKey) {
break;
}
++k;
} while (k != 0);
start_seqs.push_back(db_->GetLatestSequenceNumber());
}
std::vector<std::string> read_ts_list;
for (int t = 0; t != kNumTimestamps - 1; ++t) {
read_ts_list.push_back(Timestamp(2 * t + 3, /*do not care*/ 17));
}
ReadOptions read_opts;
for (size_t i = 0; i != read_ts_list.size(); ++i) {
Slice read_ts = read_ts_list[i];
read_opts.timestamp = &read_ts;
read_opts.iter_start_seqnum = start_seqs[i];
std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts));
SequenceNumber expected_seq = start_seqs[i] + 1;
uint64_t key = kMinKey;
for (iter->Seek(Key1(kMinKey)); iter->Valid(); iter->Next()) {
CheckIterEntry(iter.get(), Key1(key), expected_seq, kTypeValue,
"value" + std::to_string(i + 1), write_ts_list[i + 1]);
++key;
++expected_seq;
}
}
Close();
}
TEST_F(DBBasicTestWithTimestamp, ReseekToTargetTimestamp) {
Options options = CurrentOptions();
options.env = env_;
options.create_if_missing = true;
constexpr size_t kNumKeys = 16;
options.max_sequential_skip_in_iterations = kNumKeys / 2;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
// TODO(yanqin) re-enable auto compaction
options.disable_auto_compactions = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
DestroyAndReopen(options);
// Insert kNumKeys
WriteOptions write_opts;
Status s;
for (size_t i = 0; i != kNumKeys; ++i) {
std::string ts_str = Timestamp(static_cast<uint64_t>(i + 1), 0);
Slice ts = ts_str;
write_opts.timestamp = &ts;
s = db_->Put(write_opts, "foo", "value" + std::to_string(i));
ASSERT_OK(s);
}
{
ReadOptions read_opts;
std::string ts_str = Timestamp(1, 0);
Slice ts = ts_str;
read_opts.timestamp = &ts;
std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts));
iter->SeekToFirst();
CheckIterUserEntry(iter.get(), "foo", "value0", ts_str);
ASSERT_EQ(
1, options.statistics->getTickerCount(NUMBER_OF_RESEEKS_IN_ITERATION));
}
Close();
}
TEST_F(DBBasicTestWithTimestamp, ReseekToNextUserKey) {
Options options = CurrentOptions();
options.env = env_;
options.create_if_missing = true;
constexpr size_t kNumKeys = 16;
options.max_sequential_skip_in_iterations = kNumKeys / 2;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
// TODO(yanqin) re-enable auto compaction
options.disable_auto_compactions = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
DestroyAndReopen(options);
// Write kNumKeys + 1 keys
WriteOptions write_opts;
Status s;
for (size_t i = 0; i != kNumKeys; ++i) {
std::string ts_str = Timestamp(static_cast<uint64_t>(i + 1), 0);
Slice ts = ts_str;
write_opts.timestamp = &ts;
s = db_->Put(write_opts, "a", "value" + std::to_string(i));
ASSERT_OK(s);
}
{
std::string ts_str = Timestamp(static_cast<uint64_t>(kNumKeys + 1), 0);
WriteBatch batch(0, 0, kTimestampSize);
batch.Put("a", "new_value");
batch.Put("b", "new_value");
s = batch.AssignTimestamp(ts_str);
ASSERT_OK(s);
s = db_->Write(write_opts, &batch);
ASSERT_OK(s);
}
{
ReadOptions read_opts;
std::string ts_str = Timestamp(static_cast<uint64_t>(kNumKeys + 1), 0);
Slice ts = ts_str;
read_opts.timestamp = &ts;
std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts));
iter->Seek("a");
iter->Next();
CheckIterUserEntry(iter.get(), "b", "new_value", ts_str);
ASSERT_EQ(
1, options.statistics->getTickerCount(NUMBER_OF_RESEEKS_IN_ITERATION));
}
Close();
}
TEST_F(DBBasicTestWithTimestamp, MaxKeysSkipped) {
Options options = CurrentOptions();
options.env = env_;
options.create_if_missing = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
DestroyAndReopen(options);
constexpr size_t max_skippable_internal_keys = 2;
const size_t kNumKeys = max_skippable_internal_keys + 2;
WriteOptions write_opts;
Status s;
{
std::string ts_str = Timestamp(1, 0);
Slice ts = ts_str;
write_opts.timestamp = &ts;
ASSERT_OK(db_->Put(write_opts, "a", "value"));
}
for (size_t i = 0; i < kNumKeys; ++i) {
std::string ts_str = Timestamp(static_cast<uint64_t>(i + 1), 0);
Slice ts = ts_str;
write_opts.timestamp = &ts;
s = db_->Put(write_opts, "b", "value" + std::to_string(i));
ASSERT_OK(s);
}
{
ReadOptions read_opts;
read_opts.max_skippable_internal_keys = max_skippable_internal_keys;
std::string ts_str = Timestamp(1, 0);
Slice ts = ts_str;
read_opts.timestamp = &ts;
std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts));
iter->SeekToFirst();
iter->Next();
ASSERT_TRUE(iter->status().IsIncomplete());
}
Close();
}
class DBBasicTestWithTimestampCompressionSettings
: public DBBasicTestWithTimestampBase,
public testing::WithParamInterface<
std::tuple<std::shared_ptr<const FilterPolicy>, CompressionType,
uint32_t, uint32_t>> {
public:
DBBasicTestWithTimestampCompressionSettings()
: DBBasicTestWithTimestampBase(
"db_basic_test_with_timestamp_compression") {}
};
TEST_P(DBBasicTestWithTimestampCompressionSettings, PutAndGet) {
const int kNumKeysPerFile = 1024;
const size_t kNumTimestamps = 4;
Options options = CurrentOptions();
options.create_if_missing = true;
options.env = env_;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
size_t ts_sz = Timestamp(0, 0).size();
TestComparator test_cmp(ts_sz);
options.comparator = &test_cmp;
BlockBasedTableOptions bbto;
bbto.filter_policy = std::get<0>(GetParam());
bbto.whole_key_filtering = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
const CompressionType comp_type = std::get<1>(GetParam());
#if LZ4_VERSION_NUMBER < 10400 // r124+
if (comp_type == kLZ4Compression || comp_type == kLZ4HCCompression) {
return;
}
#endif // LZ4_VERSION_NUMBER >= 10400
if (!ZSTD_Supported() && comp_type == kZSTD) {
return;
}
if (!Zlib_Supported() && comp_type == kZlibCompression) {
return;
}
options.compression = comp_type;
options.compression_opts.max_dict_bytes = std::get<2>(GetParam());
if (comp_type == kZSTD) {
options.compression_opts.zstd_max_train_bytes = std::get<2>(GetParam());
}
options.compression_opts.parallel_threads = std::get<3>(GetParam());
options.target_file_size_base = 1 << 26; // 64MB
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
size_t num_cfs = handles_.size();
ASSERT_EQ(2, num_cfs);
std::vector<std::string> write_ts_list;
std::vector<std::string> read_ts_list;
for (size_t i = 0; i != kNumTimestamps; ++i) {
write_ts_list.push_back(Timestamp(i * 2, 0));
read_ts_list.push_back(Timestamp(1 + i * 2, 0));
const Slice write_ts = write_ts_list.back();
WriteOptions wopts;
wopts.timestamp = &write_ts;
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
for (size_t j = 0; j != (kNumKeysPerFile - 1) / kNumTimestamps; ++j) {
ASSERT_OK(Put(cf, Key1(j),
"value_" + std::to_string(j) + "_" + std::to_string(i),
wopts));
}
}
}
const auto& verify_db_func = [&]() {
for (size_t i = 0; i != kNumTimestamps; ++i) {
ReadOptions ropts;
const Slice read_ts = read_ts_list[i];
ropts.timestamp = &read_ts;
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
ColumnFamilyHandle* cfh = handles_[cf];
for (size_t j = 0; j != (kNumKeysPerFile - 1) / kNumTimestamps; ++j) {
std::string value;
ASSERT_OK(db_->Get(ropts, cfh, Key1(j), &value));
ASSERT_EQ("value_" + std::to_string(j) + "_" + std::to_string(i),
value);
}
}
}
};
verify_db_func();
Close();
}
#ifndef ROCKSDB_LITE
// A class which remembers the name of each flushed file.
class FlushedFileCollector : public EventListener {
public:
FlushedFileCollector() {}
~FlushedFileCollector() override {}
void OnFlushCompleted(DB* /*db*/, const FlushJobInfo& info) override {
InstrumentedMutexLock lock(&mutex_);
flushed_files_.push_back(info.file_path);
}
std::vector<std::string> GetFlushedFiles() {
std::vector<std::string> result;
{
InstrumentedMutexLock lock(&mutex_);
result = flushed_files_;
}
return result;
}
void ClearFlushedFiles() {
InstrumentedMutexLock lock(&mutex_);
flushed_files_.clear();
}
private:
std::vector<std::string> flushed_files_;
InstrumentedMutex mutex_;
};
TEST_P(DBBasicTestWithTimestampCompressionSettings, PutAndGetWithCompaction) {
const int kNumKeysPerFile = 1024;
const size_t kNumTimestamps = 2;
const size_t kNumKeysPerTimestamp = (kNumKeysPerFile - 1) / kNumTimestamps;
const size_t kSplitPosBase = kNumKeysPerTimestamp / 2;
Options options = CurrentOptions();
options.create_if_missing = true;
options.env = env_;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
FlushedFileCollector* collector = new FlushedFileCollector();
options.listeners.emplace_back(collector);
size_t ts_sz = Timestamp(0, 0).size();
TestComparator test_cmp(ts_sz);
options.comparator = &test_cmp;
BlockBasedTableOptions bbto;
bbto.filter_policy = std::get<0>(GetParam());
bbto.whole_key_filtering = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
const CompressionType comp_type = std::get<1>(GetParam());
#if LZ4_VERSION_NUMBER < 10400 // r124+
if (comp_type == kLZ4Compression || comp_type == kLZ4HCCompression) {
return;
}
#endif // LZ4_VERSION_NUMBER >= 10400
if (!ZSTD_Supported() && comp_type == kZSTD) {
return;
}
if (!Zlib_Supported() && comp_type == kZlibCompression) {
return;
}
options.compression = comp_type;
options.compression_opts.max_dict_bytes = std::get<2>(GetParam());
if (comp_type == kZSTD) {
options.compression_opts.zstd_max_train_bytes = std::get<2>(GetParam());
}
options.compression_opts.parallel_threads = std::get<3>(GetParam());
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
size_t num_cfs = handles_.size();
ASSERT_EQ(2, num_cfs);
std::vector<std::string> write_ts_list;
std::vector<std::string> read_ts_list;
const auto& verify_records_func = [&](size_t i, size_t begin, size_t end,
ColumnFamilyHandle* cfh) {
std::string value;
std::string timestamp;
ReadOptions ropts;
const Slice read_ts = read_ts_list[i];
ropts.timestamp = &read_ts;
std::string expected_timestamp =
std::string(write_ts_list[i].data(), write_ts_list[i].size());
for (size_t j = begin; j <= end; ++j) {
ASSERT_OK(db_->Get(ropts, cfh, Key1(j), &value, &timestamp));
ASSERT_EQ("value_" + std::to_string(j) + "_" + std::to_string(i), value);
ASSERT_EQ(expected_timestamp, timestamp);
}
};
for (size_t i = 0; i != kNumTimestamps; ++i) {
write_ts_list.push_back(Timestamp(i * 2, 0));
read_ts_list.push_back(Timestamp(1 + i * 2, 0));
const Slice write_ts = write_ts_list.back();
WriteOptions wopts;
wopts.timestamp = &write_ts;
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
size_t memtable_get_start = 0;
for (size_t j = 0; j != kNumKeysPerTimestamp; ++j) {
ASSERT_OK(Put(cf, Key1(j),
"value_" + std::to_string(j) + "_" + std::to_string(i),
wopts));
if (j == kSplitPosBase + i || j == kNumKeysPerTimestamp - 1) {
verify_records_func(i, memtable_get_start, j, handles_[cf]);
memtable_get_start = j + 1;
// flush all keys with the same timestamp to two sst files, split at
// incremental positions such that lowerlevel[1].smallest.userkey ==
// higherlevel[0].largest.userkey
ASSERT_OK(Flush(cf));
// compact files (2 at each level) to a lower level such that all
// keys with the same timestamp is at one level, with newer versions
// at higher levels.
CompactionOptions compact_opt;
compact_opt.compression = kNoCompression;
db_->CompactFiles(compact_opt, handles_[cf],
collector->GetFlushedFiles(),
static_cast<int>(kNumTimestamps - i));
collector->ClearFlushedFiles();
}
}
}
}
const auto& verify_db_func = [&]() {
for (size_t i = 0; i != kNumTimestamps; ++i) {
ReadOptions ropts;
const Slice read_ts = read_ts_list[i];
ropts.timestamp = &read_ts;
std::string expected_timestamp(write_ts_list[i].data(),
write_ts_list[i].size());
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
ColumnFamilyHandle* cfh = handles_[cf];
verify_records_func(i, 0, kNumKeysPerTimestamp - 1, cfh);
}
}
};
verify_db_func();
Close();
}
TEST_F(DBBasicTestWithTimestamp, BatchWriteAndMultiGet) {
const int kNumKeysPerFile = 8192;
const size_t kNumTimestamps = 2;
const size_t kNumKeysPerTimestamp = (kNumKeysPerFile - 1) / kNumTimestamps;
Options options = CurrentOptions();
options.create_if_missing = true;
options.env = env_;
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
size_t ts_sz = Timestamp(0, 0).size();
TestComparator test_cmp(ts_sz);
options.comparator = &test_cmp;
BlockBasedTableOptions bbto;
bbto.filter_policy.reset(NewBloomFilterPolicy(
10 /*bits_per_key*/, false /*use_block_based_builder*/));
bbto.whole_key_filtering = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
size_t num_cfs = handles_.size();
ASSERT_EQ(2, num_cfs);
std::vector<std::string> write_ts_list;
std::vector<std::string> read_ts_list;
const auto& verify_records_func = [&](size_t i, ColumnFamilyHandle* cfh) {
std::vector<Slice> keys;
std::vector<std::string> key_vals;
std::vector<std::string> values;
std::vector<std::string> timestamps;
for (size_t j = 0; j != kNumKeysPerTimestamp; ++j) {
key_vals.push_back(Key1(j));
}
for (size_t j = 0; j != kNumKeysPerTimestamp; ++j) {
keys.push_back(key_vals[j]);
}
ReadOptions ropts;
const Slice read_ts = read_ts_list[i];
ropts.timestamp = &read_ts;
std::string expected_timestamp(write_ts_list[i].data(),
write_ts_list[i].size());
std::vector<ColumnFamilyHandle*> cfhs(keys.size(), cfh);
std::vector<Status> statuses =
db_->MultiGet(ropts, cfhs, keys, &values, &timestamps);
for (size_t j = 0; j != kNumKeysPerTimestamp; ++j) {
ASSERT_OK(statuses[j]);
ASSERT_EQ("value_" + std::to_string(j) + "_" + std::to_string(i),
values[j]);
ASSERT_EQ(expected_timestamp, timestamps[j]);
}
};
for (size_t i = 0; i != kNumTimestamps; ++i) {
write_ts_list.push_back(Timestamp(i * 2, 0));
read_ts_list.push_back(Timestamp(1 + i * 2, 0));
const Slice& write_ts = write_ts_list.back();
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
WriteOptions wopts;
WriteBatch batch(0, 0, ts_sz);
for (size_t j = 0; j != kNumKeysPerTimestamp; ++j) {
ASSERT_OK(
batch.Put(handles_[cf], Key1(j),
"value_" + std::to_string(j) + "_" + std::to_string(i)));
}
batch.AssignTimestamp(write_ts);
ASSERT_OK(db_->Write(wopts, &batch));
verify_records_func(i, handles_[cf]);
ASSERT_OK(Flush(cf));
}
}
const auto& verify_db_func = [&]() {
for (size_t i = 0; i != kNumTimestamps; ++i) {
ReadOptions ropts;
const Slice read_ts = read_ts_list[i];
ropts.timestamp = &read_ts;
for (int cf = 0; cf != static_cast<int>(num_cfs); ++cf) {
ColumnFamilyHandle* cfh = handles_[cf];
verify_records_func(i, cfh);
}
}
};
verify_db_func();
Close();
}
#endif // !ROCKSDB_LITE
INSTANTIATE_TEST_CASE_P(
Timestamp, DBBasicTestWithTimestampCompressionSettings,
::testing::Combine(
::testing::Values(std::shared_ptr<const FilterPolicy>(nullptr),
std::shared_ptr<const FilterPolicy>(
NewBloomFilterPolicy(10, false))),
::testing::Values(kNoCompression, kZlibCompression, kLZ4Compression,
kLZ4HCCompression, kZSTD),
::testing::Values(0, 1 << 14), ::testing::Values(1, 4)));
class DBBasicTestWithTimestampPrefixSeek
: public DBBasicTestWithTimestampBase,
public testing::WithParamInterface<
std::tuple<std::shared_ptr<const SliceTransform>,
std::shared_ptr<const FilterPolicy>, bool>> {
public:
DBBasicTestWithTimestampPrefixSeek()
: DBBasicTestWithTimestampBase(
"/db_basic_test_with_timestamp_prefix_seek") {}
};
TEST_P(DBBasicTestWithTimestampPrefixSeek, ForwardIterateWithPrefix) {
const size_t kNumKeysPerFile = 128;
Options options = CurrentOptions();
options.env = env_;
options.create_if_missing = true;
// TODO(yanqin): re-enable auto compactions
options.disable_auto_compactions = true;
const size_t kTimestampSize = Timestamp(0, 0).size();
TestComparator test_cmp(kTimestampSize);
options.comparator = &test_cmp;
options.prefix_extractor = std::get<0>(GetParam());
options.memtable_factory.reset(new SpecialSkipListFactory(kNumKeysPerFile));
BlockBasedTableOptions bbto;
bbto.filter_policy = std::get<1>(GetParam());
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
const uint64_t kMaxKey = 0xffffffffffffffff;
const uint64_t kMinKey = 0xfffffffffffff000;
const std::vector<std::string> write_ts_list = {Timestamp(3, 0xffffffff),
Timestamp(6, 0xffffffff)};
WriteOptions write_opts;
{
for (size_t i = 0; i != write_ts_list.size(); ++i) {
Slice write_ts = write_ts_list[i];
write_opts.timestamp = &write_ts;
uint64_t key = kMinKey;
do {
Status s = db_->Put(write_opts, Key1(key), "value" + std::to_string(i));
ASSERT_OK(s);
if (key == kMaxKey) {
break;
}
++key;
} while (true);
}
}
const std::vector<std::string> read_ts_list = {Timestamp(5, 0xffffffff),
Timestamp(9, 0xffffffff)};
{
ReadOptions read_opts;
read_opts.total_order_seek = false;
read_opts.prefix_same_as_start = std::get<2>(GetParam());
fprintf(stdout, "%s %s %d\n", options.prefix_extractor->Name(),
bbto.filter_policy ? bbto.filter_policy->Name() : "null",
static_cast<int>(read_opts.prefix_same_as_start));
for (size_t i = 0; i != read_ts_list.size(); ++i) {
Slice read_ts = read_ts_list[i];
read_opts.timestamp = &read_ts;
std::unique_ptr<Iterator> iter(db_->NewIterator(read_opts));
// Seek to kMaxKey
iter->Seek(Key1(kMaxKey));
CheckIterUserEntry(iter.get(), Key1(kMaxKey), "value" + std::to_string(i),
write_ts_list[i]);
iter->Next();
ASSERT_FALSE(iter->Valid());
}
const std::vector<uint64_t> targets = {kMinKey, kMinKey + 0x10,
kMinKey + 0x100, kMaxKey};
const SliceTransform* const pe = options.prefix_extractor.get();
ASSERT_NE(nullptr, pe);
const size_t kPrefixShift =
8 * (Key1(0).size() - pe->Transform(Key1(0)).size());
const uint64_t kPrefixMask =
~((static_cast<uint64_t>(1) << kPrefixShift) - 1);
const uint64_t kNumKeysWithinPrefix =
(static_cast<uint64_t>(1) << kPrefixShift);
for (size_t i = 0; i != read_ts_list.size(); ++i) {
Slice read_ts = read_ts_list[i];
read_opts.timestamp = &read_ts;
std::unique_ptr<Iterator> it(db_->NewIterator(read_opts));
for (size_t j = 0; j != targets.size(); ++j) {
std::string start_key = Key1(targets[j]);
uint64_t expected_ub =
(targets[j] & kPrefixMask) - 1 + kNumKeysWithinPrefix;
uint64_t expected_key = targets[j];
size_t count = 0;
it->Seek(Key1(targets[j]));
while (it->Valid()) {
std::string saved_prev_key;
saved_prev_key.assign(it->key().data(), it->key().size());
// Out of prefix
if (!read_opts.prefix_same_as_start &&
pe->Transform(saved_prev_key) != pe->Transform(start_key)) {
break;
}
CheckIterUserEntry(it.get(), Key1(expected_key),
"value" + std::to_string(i), write_ts_list[i]);
++count;
++expected_key;
it->Next();
}
ASSERT_EQ(expected_ub - targets[j] + 1, count);
}
}
}
Close();
}
// TODO(yanqin): consider handling non-fixed-length prefix extractors, e.g.
// NoopTransform.
INSTANTIATE_TEST_CASE_P(
Timestamp, DBBasicTestWithTimestampPrefixSeek,
::testing::Combine(
::testing::Values(
std::shared_ptr<const SliceTransform>(NewFixedPrefixTransform(4)),
std::shared_ptr<const SliceTransform>(NewFixedPrefixTransform(7)),
std::shared_ptr<const SliceTransform>(NewFixedPrefixTransform(8))),
::testing::Values(std::shared_ptr<const FilterPolicy>(nullptr),
std::shared_ptr<const FilterPolicy>(
NewBloomFilterPolicy(10 /*bits_per_key*/, false)),
std::shared_ptr<const FilterPolicy>(
NewBloomFilterPolicy(20 /*bits_per_key*/,
false))),
::testing::Bool()));
} // namespace ROCKSDB_NAMESPACE
#ifdef ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
extern "C" {
void RegisterCustomObjects(int argc, char** argv);
}
#else
void RegisterCustomObjects(int /*argc*/, char** /*argv*/) {}
#endif // !ROCKSDB_UNITTESTS_WITH_CUSTOM_OBJECTS_FROM_STATIC_LIBS
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
RegisterCustomObjects(argc, argv);
return RUN_ALL_TESTS();
}
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