mirror of https://github.com/facebook/rocksdb.git
351 lines
10 KiB
C++
351 lines
10 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#include "db/db_impl/db_impl.h"
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#include "rocksdb/db.h"
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#include "rocksdb/env.h"
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#include "table/cuckoo/cuckoo_table_factory.h"
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#include "table/cuckoo/cuckoo_table_reader.h"
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#include "table/meta_blocks.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "util/cast_util.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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class CuckooTableDBTest : public testing::Test {
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private:
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std::string dbname_;
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Env* env_;
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DB* db_;
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public:
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CuckooTableDBTest() : env_(Env::Default()) {
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dbname_ = test::PerThreadDBPath("cuckoo_table_db_test");
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EXPECT_OK(DestroyDB(dbname_, Options()));
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db_ = nullptr;
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Reopen();
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}
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~CuckooTableDBTest() override {
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delete db_;
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EXPECT_OK(DestroyDB(dbname_, Options()));
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}
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Options CurrentOptions() {
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Options options;
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options.table_factory.reset(NewCuckooTableFactory());
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options.memtable_factory.reset(NewHashLinkListRepFactory(4, 0, 3, true));
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options.allow_mmap_reads = true;
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options.create_if_missing = true;
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options.allow_concurrent_memtable_write = false;
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return options;
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}
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DBImpl* dbfull() { return static_cast_with_check<DBImpl>(db_); }
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// The following util methods are copied from plain_table_db_test.
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void Reopen(Options* options = nullptr) {
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delete db_;
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db_ = nullptr;
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Options opts;
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if (options != nullptr) {
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opts = *options;
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} else {
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opts = CurrentOptions();
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opts.create_if_missing = true;
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}
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ASSERT_OK(DB::Open(opts, dbname_, &db_));
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}
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Status Put(const Slice& k, const Slice& v) {
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return db_->Put(WriteOptions(), k, v);
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}
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Status Delete(const std::string& k) {
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return db_->Delete(WriteOptions(), k);
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}
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std::string Get(const std::string& k) {
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ReadOptions options;
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std::string result;
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Status s = db_->Get(options, k, &result);
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if (s.IsNotFound()) {
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result = "NOT_FOUND";
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} else if (!s.ok()) {
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result = s.ToString();
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}
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return result;
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}
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int NumTableFilesAtLevel(int level) {
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std::string property;
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EXPECT_TRUE(db_->GetProperty(
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"rocksdb.num-files-at-level" + NumberToString(level), &property));
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return atoi(property.c_str());
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}
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// Return spread of files per level
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std::string FilesPerLevel() {
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std::string result;
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size_t last_non_zero_offset = 0;
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for (int level = 0; level < db_->NumberLevels(); level++) {
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int f = NumTableFilesAtLevel(level);
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char buf[100];
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snprintf(buf, sizeof(buf), "%s%d", (level ? "," : ""), f);
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result += buf;
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if (f > 0) {
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last_non_zero_offset = result.size();
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}
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}
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result.resize(last_non_zero_offset);
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return result;
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}
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};
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TEST_F(CuckooTableDBTest, Flush) {
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// Try with empty DB first.
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ASSERT_TRUE(dbfull() != nullptr);
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ASSERT_EQ("NOT_FOUND", Get("key2"));
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// Add some values to db.
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Options options = CurrentOptions();
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Reopen(&options);
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ASSERT_OK(Put("key1", "v1"));
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ASSERT_OK(Put("key2", "v2"));
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ASSERT_OK(Put("key3", "v3"));
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dbfull()->TEST_FlushMemTable();
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TablePropertiesCollection ptc;
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reinterpret_cast<DB*>(dbfull())->GetPropertiesOfAllTables(&ptc);
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ASSERT_EQ(1U, ptc.size());
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ASSERT_EQ(3U, ptc.begin()->second->num_entries);
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ASSERT_EQ("1", FilesPerLevel());
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ASSERT_EQ("v1", Get("key1"));
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ASSERT_EQ("v2", Get("key2"));
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ASSERT_EQ("v3", Get("key3"));
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ASSERT_EQ("NOT_FOUND", Get("key4"));
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// Now add more keys and flush.
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ASSERT_OK(Put("key4", "v4"));
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ASSERT_OK(Put("key5", "v5"));
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ASSERT_OK(Put("key6", "v6"));
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dbfull()->TEST_FlushMemTable();
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reinterpret_cast<DB*>(dbfull())->GetPropertiesOfAllTables(&ptc);
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ASSERT_EQ(2U, ptc.size());
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auto row = ptc.begin();
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ASSERT_EQ(3U, row->second->num_entries);
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ASSERT_EQ(3U, (++row)->second->num_entries);
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ASSERT_EQ("2", FilesPerLevel());
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ASSERT_EQ("v1", Get("key1"));
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ASSERT_EQ("v2", Get("key2"));
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ASSERT_EQ("v3", Get("key3"));
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ASSERT_EQ("v4", Get("key4"));
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ASSERT_EQ("v5", Get("key5"));
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ASSERT_EQ("v6", Get("key6"));
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ASSERT_OK(Delete("key6"));
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ASSERT_OK(Delete("key5"));
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ASSERT_OK(Delete("key4"));
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dbfull()->TEST_FlushMemTable();
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reinterpret_cast<DB*>(dbfull())->GetPropertiesOfAllTables(&ptc);
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ASSERT_EQ(3U, ptc.size());
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row = ptc.begin();
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ASSERT_EQ(3U, row->second->num_entries);
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ASSERT_EQ(3U, (++row)->second->num_entries);
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ASSERT_EQ(3U, (++row)->second->num_entries);
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ASSERT_EQ("3", FilesPerLevel());
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ASSERT_EQ("v1", Get("key1"));
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ASSERT_EQ("v2", Get("key2"));
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ASSERT_EQ("v3", Get("key3"));
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ASSERT_EQ("NOT_FOUND", Get("key4"));
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ASSERT_EQ("NOT_FOUND", Get("key5"));
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ASSERT_EQ("NOT_FOUND", Get("key6"));
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}
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TEST_F(CuckooTableDBTest, FlushWithDuplicateKeys) {
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Options options = CurrentOptions();
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Reopen(&options);
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ASSERT_OK(Put("key1", "v1"));
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ASSERT_OK(Put("key2", "v2"));
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ASSERT_OK(Put("key1", "v3")); // Duplicate
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dbfull()->TEST_FlushMemTable();
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TablePropertiesCollection ptc;
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reinterpret_cast<DB*>(dbfull())->GetPropertiesOfAllTables(&ptc);
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ASSERT_EQ(1U, ptc.size());
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ASSERT_EQ(2U, ptc.begin()->second->num_entries);
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ASSERT_EQ("1", FilesPerLevel());
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ASSERT_EQ("v3", Get("key1"));
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ASSERT_EQ("v2", Get("key2"));
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}
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namespace {
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static std::string Key(int i) {
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char buf[100];
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snprintf(buf, sizeof(buf), "key_______%06d", i);
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return std::string(buf);
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}
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static std::string Uint64Key(uint64_t i) {
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std::string str;
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str.resize(8);
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memcpy(&str[0], static_cast<void*>(&i), 8);
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return str;
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}
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} // namespace.
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TEST_F(CuckooTableDBTest, Uint64Comparator) {
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Options options = CurrentOptions();
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options.comparator = test::Uint64Comparator();
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Reopen(&options);
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ASSERT_OK(Put(Uint64Key(1), "v1"));
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ASSERT_OK(Put(Uint64Key(2), "v2"));
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ASSERT_OK(Put(Uint64Key(3), "v3"));
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dbfull()->TEST_FlushMemTable();
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ASSERT_EQ("v1", Get(Uint64Key(1)));
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ASSERT_EQ("v2", Get(Uint64Key(2)));
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ASSERT_EQ("v3", Get(Uint64Key(3)));
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ASSERT_EQ("NOT_FOUND", Get(Uint64Key(4)));
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// Add more keys.
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ASSERT_OK(Delete(Uint64Key(2))); // Delete.
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dbfull()->TEST_FlushMemTable();
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ASSERT_OK(Put(Uint64Key(3), "v0")); // Update.
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ASSERT_OK(Put(Uint64Key(4), "v4"));
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dbfull()->TEST_FlushMemTable();
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ASSERT_EQ("v1", Get(Uint64Key(1)));
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ASSERT_EQ("NOT_FOUND", Get(Uint64Key(2)));
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ASSERT_EQ("v0", Get(Uint64Key(3)));
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ASSERT_EQ("v4", Get(Uint64Key(4)));
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}
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TEST_F(CuckooTableDBTest, CompactionIntoMultipleFiles) {
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// Create a big L0 file and check it compacts into multiple files in L1.
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Options options = CurrentOptions();
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options.write_buffer_size = 270 << 10;
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// Two SST files should be created, each containing 14 keys.
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// Number of buckets will be 16. Total size ~156 KB.
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options.target_file_size_base = 160 << 10;
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Reopen(&options);
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// Write 28 values, each 10016 B ~ 10KB
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for (int idx = 0; idx < 28; ++idx) {
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ASSERT_OK(Put(Key(idx), std::string(10000, 'a' + char(idx))));
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}
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dbfull()->TEST_WaitForFlushMemTable();
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ASSERT_EQ("1", FilesPerLevel());
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dbfull()->TEST_CompactRange(0, nullptr, nullptr, nullptr,
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true /* disallow trivial move */);
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ASSERT_EQ("0,2", FilesPerLevel());
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for (int idx = 0; idx < 28; ++idx) {
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ASSERT_EQ(std::string(10000, 'a' + char(idx)), Get(Key(idx)));
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}
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}
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TEST_F(CuckooTableDBTest, SameKeyInsertedInTwoDifferentFilesAndCompacted) {
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// Insert same key twice so that they go to different SST files. Then wait for
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// compaction and check if the latest value is stored and old value removed.
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Options options = CurrentOptions();
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options.write_buffer_size = 100 << 10; // 100KB
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options.level0_file_num_compaction_trigger = 2;
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Reopen(&options);
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// Write 11 values, each 10016 B
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for (int idx = 0; idx < 11; ++idx) {
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ASSERT_OK(Put(Key(idx), std::string(10000, 'a')));
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}
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dbfull()->TEST_WaitForFlushMemTable();
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ASSERT_EQ("1", FilesPerLevel());
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// Generate one more file in level-0, and should trigger level-0 compaction
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for (int idx = 0; idx < 11; ++idx) {
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ASSERT_OK(Put(Key(idx), std::string(10000, 'a' + char(idx))));
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}
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dbfull()->TEST_WaitForFlushMemTable();
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dbfull()->TEST_CompactRange(0, nullptr, nullptr);
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ASSERT_EQ("0,1", FilesPerLevel());
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for (int idx = 0; idx < 11; ++idx) {
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ASSERT_EQ(std::string(10000, 'a' + char(idx)), Get(Key(idx)));
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}
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}
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TEST_F(CuckooTableDBTest, AdaptiveTable) {
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Options options = CurrentOptions();
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// Ensure options compatible with PlainTable
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options.prefix_extractor.reset(NewCappedPrefixTransform(8));
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// Write some keys using cuckoo table.
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options.table_factory.reset(NewCuckooTableFactory());
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Reopen(&options);
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ASSERT_OK(Put("key1", "v1"));
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ASSERT_OK(Put("key2", "v2"));
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ASSERT_OK(Put("key3", "v3"));
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dbfull()->TEST_FlushMemTable();
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// Write some keys using plain table.
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std::shared_ptr<TableFactory> block_based_factory(
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NewBlockBasedTableFactory());
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std::shared_ptr<TableFactory> plain_table_factory(
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NewPlainTableFactory());
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std::shared_ptr<TableFactory> cuckoo_table_factory(
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NewCuckooTableFactory());
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options.create_if_missing = false;
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options.table_factory.reset(NewAdaptiveTableFactory(
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plain_table_factory, block_based_factory, plain_table_factory,
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cuckoo_table_factory));
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Reopen(&options);
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ASSERT_OK(Put("key4", "v4"));
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ASSERT_OK(Put("key1", "v5"));
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dbfull()->TEST_FlushMemTable();
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// Write some keys using block based table.
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options.table_factory.reset(NewAdaptiveTableFactory(
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block_based_factory, block_based_factory, plain_table_factory,
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cuckoo_table_factory));
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Reopen(&options);
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ASSERT_OK(Put("key5", "v6"));
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ASSERT_OK(Put("key2", "v7"));
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dbfull()->TEST_FlushMemTable();
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ASSERT_EQ("v5", Get("key1"));
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ASSERT_EQ("v7", Get("key2"));
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ASSERT_EQ("v3", Get("key3"));
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ASSERT_EQ("v4", Get("key4"));
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ASSERT_EQ("v6", Get("key5"));
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}
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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if (ROCKSDB_NAMESPACE::port::kLittleEndian) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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} else {
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fprintf(stderr, "SKIPPED as Cuckoo table doesn't support Big Endian\n");
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return 0;
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}
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}
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#else
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#include <stdio.h>
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int main(int /*argc*/, char** /*argv*/) {
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fprintf(stderr, "SKIPPED as Cuckoo table is not supported in ROCKSDB_LITE\n");
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return 0;
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}
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#endif // ROCKSDB_LITE
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