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rocksdb/db/cuckoo_table_db_test.cc
Peter Dillinger d3817f058d Remove deprecated DB::Open raw pointer variants (and more) (#14335) 
Summary:
and remove deprecated DB::MaxMemCompactionLevel(). In the process of pushing through a relatively clean refactoring of uses of the old functions, some other minor public APIs are also migrated from raw DB pointers to unique_ptr.

Claude did pretty much all the work, but requiring dozens of prompts to actually push through relatively clean phase out of raw DB pointers from what needed to be touched, and leaving that code in better shape. (Hundreds of `DB*` still remain all over the place even outside C and Java bindings.)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/14335

Test Plan: existing tests; no functional changes intended

Reviewed By: xingbowang, mszeszko-meta

Differential Revision: D93523820

Pulled By: pdillinger

fbshipit-source-id: e4ca22ad81cd2cfe91122d7507d7ca34fe03d043
2026-02-17 23:33:39 -08:00

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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).
#include "db/db_impl/db_impl.h"
#include "db/db_test_util.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "table/cuckoo/cuckoo_table_factory.h"
#include "table/cuckoo/cuckoo_table_reader.h"
#include "table/meta_blocks.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/cast_util.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
class CuckooTableDBTest : public testing::Test {
private:
std::string dbname_;
Env* env_;
std::unique_ptr<DB> db_;
public:
CuckooTableDBTest() : env_(Env::Default()) {
dbname_ = test::PerThreadDBPath("cuckoo_table_db_test");
EXPECT_OK(DestroyDB(dbname_, Options()));
db_.reset();
Reopen();
}
~CuckooTableDBTest() override {
db_.reset();
EXPECT_OK(DestroyDB(dbname_, Options()));
}
Options CurrentOptions() {
Options options;
options.level_compaction_dynamic_level_bytes = false;
options.table_factory.reset(NewCuckooTableFactory());
options.memtable_factory.reset(NewHashLinkListRepFactory(4, 0, 3, true));
options.allow_mmap_reads = true;
options.create_if_missing = true;
options.allow_concurrent_memtable_write = false;
return options;
}
DBImpl* dbfull() { return static_cast_with_check<DBImpl>(db_.get()); }
// The following util methods are copied from plain_table_db_test.
void Reopen(Options* options = nullptr) {
db_.reset();
Options opts;
if (options != nullptr) {
opts = *options;
} else {
opts = CurrentOptions();
opts.create_if_missing = true;
}
ASSERT_OK(DB::Open(opts, dbname_, &db_));
}
void DestroyAndReopen(Options* options) {
assert(options);
ASSERT_OK(db_->Close());
db_.reset();
ASSERT_OK(DestroyDB(dbname_, *options));
Reopen(options);
}
Status Put(const Slice& k, const Slice& v) {
return db_->Put(WriteOptions(), k, v);
}
Status Delete(const std::string& k) { return db_->Delete(WriteOptions(), k); }
std::string Get(const std::string& k) {
ReadOptions options;
std::string result;
Status s = db_->Get(options, k, &result);
if (s.IsNotFound()) {
result = "NOT_FOUND";
} else if (!s.ok()) {
result = s.ToString();
}
return result;
}
int NumTableFilesAtLevel(int level) {
std::string property;
EXPECT_TRUE(db_->GetProperty(
"rocksdb.num-files-at-level" + std::to_string(level), &property));
return atoi(property.c_str());
}
// Return spread of files per level
std::string FilesPerLevel() {
std::string result;
size_t last_non_zero_offset = 0;
for (int level = 0; level < db_->NumberLevels(); level++) {
int f = NumTableFilesAtLevel(level);
char buf[100];
snprintf(buf, sizeof(buf), "%s%d", (level ? "," : ""), f);
result += buf;
if (f > 0) {
last_non_zero_offset = result.size();
}
}
result.resize(last_non_zero_offset);
return result;
}
};
TEST_F(CuckooTableDBTest, Flush) {
// Try with empty DB first.
ASSERT_TRUE(dbfull() != nullptr);
ASSERT_EQ("NOT_FOUND", Get("key2"));
// Add some values to db.
Options options = CurrentOptions();
Reopen(&options);
ASSERT_OK(Put("key1", "v1"));
ASSERT_OK(Put("key2", "v2"));
ASSERT_OK(Put("key3", "v3"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
TablePropertiesCollection ptc;
ASSERT_OK(dbfull()->GetPropertiesOfAllTables(&ptc));
VerifySstUniqueIds(ptc);
ASSERT_EQ(1U, ptc.size());
ASSERT_EQ(3U, ptc.begin()->second->num_entries);
ASSERT_EQ("1", FilesPerLevel());
ASSERT_EQ("v1", Get("key1"));
ASSERT_EQ("v2", Get("key2"));
ASSERT_EQ("v3", Get("key3"));
ASSERT_EQ("NOT_FOUND", Get("key4"));
// Now add more keys and flush.
ASSERT_OK(Put("key4", "v4"));
ASSERT_OK(Put("key5", "v5"));
ASSERT_OK(Put("key6", "v6"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_OK(dbfull()->GetPropertiesOfAllTables(&ptc));
VerifySstUniqueIds(ptc);
ASSERT_EQ(2U, ptc.size());
auto row = ptc.begin();
ASSERT_EQ(3U, row->second->num_entries);
ASSERT_EQ(3U, (++row)->second->num_entries);
ASSERT_EQ("2", FilesPerLevel());
ASSERT_EQ("v1", Get("key1"));
ASSERT_EQ("v2", Get("key2"));
ASSERT_EQ("v3", Get("key3"));
ASSERT_EQ("v4", Get("key4"));
ASSERT_EQ("v5", Get("key5"));
ASSERT_EQ("v6", Get("key6"));
ASSERT_OK(Delete("key6"));
ASSERT_OK(Delete("key5"));
ASSERT_OK(Delete("key4"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_OK(dbfull()->GetPropertiesOfAllTables(&ptc));
VerifySstUniqueIds(ptc);
ASSERT_EQ(3U, ptc.size());
row = ptc.begin();
ASSERT_EQ(3U, row->second->num_entries);
ASSERT_EQ(3U, (++row)->second->num_entries);
ASSERT_EQ(3U, (++row)->second->num_entries);
ASSERT_EQ("3", FilesPerLevel());
ASSERT_EQ("v1", Get("key1"));
ASSERT_EQ("v2", Get("key2"));
ASSERT_EQ("v3", Get("key3"));
ASSERT_EQ("NOT_FOUND", Get("key4"));
ASSERT_EQ("NOT_FOUND", Get("key5"));
ASSERT_EQ("NOT_FOUND", Get("key6"));
}
TEST_F(CuckooTableDBTest, FlushWithDuplicateKeys) {
Options options = CurrentOptions();
Reopen(&options);
ASSERT_OK(Put("key1", "v1"));
ASSERT_OK(Put("key2", "v2"));
ASSERT_OK(Put("key1", "v3")); // Duplicate
ASSERT_OK(dbfull()->TEST_FlushMemTable());
TablePropertiesCollection ptc;
ASSERT_OK(dbfull()->GetPropertiesOfAllTables(&ptc));
VerifySstUniqueIds(ptc);
ASSERT_EQ(1U, ptc.size());
ASSERT_EQ(2U, ptc.begin()->second->num_entries);
ASSERT_EQ("1", FilesPerLevel());
ASSERT_EQ("v3", Get("key1"));
ASSERT_EQ("v2", Get("key2"));
}
namespace {
static std::string Key(int i) {
char buf[100];
snprintf(buf, sizeof(buf), "key_______%06d", i);
return std::string(buf);
}
static std::string Uint64Key(uint64_t i) {
std::string str;
str.resize(8);
memcpy(str.data(), static_cast<void*>(&i), 8);
return str;
}
} // namespace.
TEST_F(CuckooTableDBTest, Uint64Comparator) {
Options options = CurrentOptions();
options.comparator = test::Uint64Comparator();
DestroyAndReopen(&options);
ASSERT_OK(Put(Uint64Key(1), "v1"));
ASSERT_OK(Put(Uint64Key(2), "v2"));
ASSERT_OK(Put(Uint64Key(3), "v3"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_EQ("v1", Get(Uint64Key(1)));
ASSERT_EQ("v2", Get(Uint64Key(2)));
ASSERT_EQ("v3", Get(Uint64Key(3)));
ASSERT_EQ("NOT_FOUND", Get(Uint64Key(4)));
// Add more keys.
ASSERT_OK(Delete(Uint64Key(2))); // Delete.
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_OK(Put(Uint64Key(3), "v0")); // Update.
ASSERT_OK(Put(Uint64Key(4), "v4"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_EQ("v1", Get(Uint64Key(1)));
ASSERT_EQ("NOT_FOUND", Get(Uint64Key(2)));
ASSERT_EQ("v0", Get(Uint64Key(3)));
ASSERT_EQ("v4", Get(Uint64Key(4)));
}
TEST_F(CuckooTableDBTest, CompactionIntoMultipleFiles) {
// Create a big L0 file and check it compacts into multiple files in L1.
Options options = CurrentOptions();
options.write_buffer_size = 270 << 10;
// Two SST files should be created, each containing 14 keys.
// Number of buckets will be 16. Total size ~156 KB.
options.target_file_size_base = 160 << 10;
Reopen(&options);
// Write 28 values, each 10016 B ~ 10KB
for (int idx = 0; idx < 28; ++idx) {
ASSERT_OK(Put(Key(idx), std::string(10000, 'a' + char(idx))));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
ASSERT_EQ("1", FilesPerLevel());
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, nullptr,
true /* disallow trivial move */));
ASSERT_EQ("0,2", FilesPerLevel());
for (int idx = 0; idx < 28; ++idx) {
ASSERT_EQ(std::string(10000, 'a' + char(idx)), Get(Key(idx)));
}
}
TEST_F(CuckooTableDBTest, SameKeyInsertedInTwoDifferentFilesAndCompacted) {
// Insert same key twice so that they go to different SST files. Then wait for
// compaction and check if the latest value is stored and old value removed.
Options options = CurrentOptions();
options.write_buffer_size = 100 << 10; // 100KB
options.level0_file_num_compaction_trigger = 2;
Reopen(&options);
// Write 11 values, each 10016 B
for (int idx = 0; idx < 11; ++idx) {
ASSERT_OK(Put(Key(idx), std::string(10000, 'a')));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
ASSERT_EQ("1", FilesPerLevel());
// Generate one more file in level-0, and should trigger level-0 compaction
for (int idx = 0; idx < 11; ++idx) {
ASSERT_OK(Put(Key(idx), std::string(10000, 'a' + char(idx))));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_EQ("0,1", FilesPerLevel());
for (int idx = 0; idx < 11; ++idx) {
ASSERT_EQ(std::string(10000, 'a' + char(idx)), Get(Key(idx)));
}
}
TEST_F(CuckooTableDBTest, AdaptiveTable) {
Options options = CurrentOptions();
// Ensure options compatible with PlainTable
options.prefix_extractor.reset(NewCappedPrefixTransform(8));
// Write some keys using cuckoo table.
options.table_factory.reset(NewCuckooTableFactory());
Reopen(&options);
ASSERT_OK(Put("key1", "v1"));
ASSERT_OK(Put("key2", "v2"));
ASSERT_OK(Put("key3", "v3"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
// Write some keys using plain table.
std::shared_ptr<TableFactory> block_based_factory(
NewBlockBasedTableFactory());
std::shared_ptr<TableFactory> plain_table_factory(NewPlainTableFactory());
std::shared_ptr<TableFactory> cuckoo_table_factory(NewCuckooTableFactory());
options.create_if_missing = false;
options.table_factory.reset(
NewAdaptiveTableFactory(plain_table_factory, block_based_factory,
plain_table_factory, cuckoo_table_factory));
Reopen(&options);
ASSERT_OK(Put("key4", "v4"));
ASSERT_OK(Put("key1", "v5"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
// Write some keys using block based table.
options.table_factory.reset(
NewAdaptiveTableFactory(block_based_factory, block_based_factory,
plain_table_factory, cuckoo_table_factory));
Reopen(&options);
ASSERT_OK(Put("key5", "v6"));
ASSERT_OK(Put("key2", "v7"));
ASSERT_OK(dbfull()->TEST_FlushMemTable());
ASSERT_EQ("v5", Get("key1"));
ASSERT_EQ("v7", Get("key2"));
ASSERT_EQ("v3", Get("key3"));
ASSERT_EQ("v4", Get("key4"));
ASSERT_EQ("v6", Get("key5"));
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
if (ROCKSDB_NAMESPACE::port::kLittleEndian) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
} else {
fprintf(stderr, "SKIPPED as Cuckoo table doesn't support Big Endian\n");
return 0;
}
}
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