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db_test.cc
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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.
// Introduction of SyncPoint effectively disabled building and running this test
// in Release build.
// which is a pity, it is a good test
#include <fcntl.h>
#include <algorithm>
#include <set>
#include <thread>
#include <unordered_set>
#include <utility>
#ifndef OS_WIN
#include <unistd.h>
#endif
#ifdef OS_SOLARIS
#include <alloca.h>
#endif
#include "cache/lru_cache.h"
#include "db/db_impl.h"
#include "db/db_test_util.h"
#include "db/dbformat.h"
#include "db/job_context.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "env/mock_env.h"
#include "memtable/hash_linklist_rep.h"
#include "monitoring/thread_status_util.h"
#include "port/port.h"
#include "port/stack_trace.h"
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/convenience.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/experimental.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/options.h"
#include "rocksdb/perf_context.h"
#include "rocksdb/slice.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/snapshot.h"
#include "rocksdb/table.h"
#include "rocksdb/table_properties.h"
#include "rocksdb/thread_status.h"
#include "rocksdb/utilities/checkpoint.h"
#include "rocksdb/utilities/optimistic_transaction_db.h"
#include "rocksdb/utilities/write_batch_with_index.h"
#include "table/block_based_table_factory.h"
#include "table/mock_table.h"
#include "table/plain_table_factory.h"
#include "table/scoped_arena_iterator.h"
#include "util/compression.h"
#include "util/file_reader_writer.h"
#include "util/filename.h"
#include "util/mutexlock.h"
#include "util/rate_limiter.h"
#include "util/string_util.h"
#include "util/sync_point.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "utilities/merge_operators.h"
namespace rocksdb {
class DBTest : public DBTestBase {
public:
DBTest() : DBTestBase("/db_test") {}
};
class DBTestWithParam
: public DBTest,
public testing::WithParamInterface<std::tuple<uint32_t, bool>> {
public:
DBTestWithParam() {
max_subcompactions_ = std::get<0>(GetParam());
exclusive_manual_compaction_ = std::get<1>(GetParam());
}
// Required if inheriting from testing::WithParamInterface<>
static void SetUpTestCase() {}
static void TearDownTestCase() {}
uint32_t max_subcompactions_;
bool exclusive_manual_compaction_;
};
TEST_F(DBTest, MockEnvTest) {
unique_ptr<MockEnv> env{new MockEnv(Env::Default())};
Options options;
options.create_if_missing = true;
options.env = env.get();
DB* db;
const Slice keys[] = {Slice("aaa"), Slice("bbb"), Slice("ccc")};
const Slice vals[] = {Slice("foo"), Slice("bar"), Slice("baz")};
ASSERT_OK(DB::Open(options, "/dir/db", &db));
for (size_t i = 0; i < 3; ++i) {
ASSERT_OK(db->Put(WriteOptions(), keys[i], vals[i]));
}
for (size_t i = 0; i < 3; ++i) {
std::string res;
ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
ASSERT_TRUE(res == vals[i]);
}
Iterator* iterator = db->NewIterator(ReadOptions());
iterator->SeekToFirst();
for (size_t i = 0; i < 3; ++i) {
ASSERT_TRUE(iterator->Valid());
ASSERT_TRUE(keys[i] == iterator->key());
ASSERT_TRUE(vals[i] == iterator->value());
iterator->Next();
}
ASSERT_TRUE(!iterator->Valid());
delete iterator;
// TEST_FlushMemTable() is not supported in ROCKSDB_LITE
#ifndef ROCKSDB_LITE
DBImpl* dbi = reinterpret_cast<DBImpl*>(db);
ASSERT_OK(dbi->TEST_FlushMemTable());
for (size_t i = 0; i < 3; ++i) {
std::string res;
ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
ASSERT_TRUE(res == vals[i]);
}
#endif // ROCKSDB_LITE
delete db;
}
// NewMemEnv returns nullptr in ROCKSDB_LITE since class InMemoryEnv isn't
// defined.
#ifndef ROCKSDB_LITE
TEST_F(DBTest, MemEnvTest) {
unique_ptr<Env> env{NewMemEnv(Env::Default())};
Options options;
options.create_if_missing = true;
options.env = env.get();
DB* db;
const Slice keys[] = {Slice("aaa"), Slice("bbb"), Slice("ccc")};
const Slice vals[] = {Slice("foo"), Slice("bar"), Slice("baz")};
ASSERT_OK(DB::Open(options, "/dir/db", &db));
for (size_t i = 0; i < 3; ++i) {
ASSERT_OK(db->Put(WriteOptions(), keys[i], vals[i]));
}
for (size_t i = 0; i < 3; ++i) {
std::string res;
ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
ASSERT_TRUE(res == vals[i]);
}
Iterator* iterator = db->NewIterator(ReadOptions());
iterator->SeekToFirst();
for (size_t i = 0; i < 3; ++i) {
ASSERT_TRUE(iterator->Valid());
ASSERT_TRUE(keys[i] == iterator->key());
ASSERT_TRUE(vals[i] == iterator->value());
iterator->Next();
}
ASSERT_TRUE(!iterator->Valid());
delete iterator;
DBImpl* dbi = reinterpret_cast<DBImpl*>(db);
ASSERT_OK(dbi->TEST_FlushMemTable());
for (size_t i = 0; i < 3; ++i) {
std::string res;
ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
ASSERT_TRUE(res == vals[i]);
}
delete db;
options.create_if_missing = false;
ASSERT_OK(DB::Open(options, "/dir/db", &db));
for (size_t i = 0; i < 3; ++i) {
std::string res;
ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
ASSERT_TRUE(res == vals[i]);
}
delete db;
}
#endif // ROCKSDB_LITE
TEST_F(DBTest, WriteEmptyBatch) {
Options options = CurrentOptions();
options.env = env_;
options.write_buffer_size = 100000;
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put(1, "foo", "bar"));
WriteOptions wo;
wo.sync = true;
wo.disableWAL = false;
WriteBatch empty_batch;
ASSERT_OK(dbfull()->Write(wo, &empty_batch));
// make sure we can re-open it.
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
ASSERT_EQ("bar", Get(1, "foo"));
}
TEST_F(DBTest, SkipDelay) {
Options options = CurrentOptions();
options.env = env_;
options.write_buffer_size = 100000;
CreateAndReopenWithCF({"pikachu"}, options);
for (bool sync : {true, false}) {
for (bool disableWAL : {true, false}) {
if (sync && disableWAL) {
// sync and disableWAL is incompatible.
continue;
}
// Use a small number to ensure a large delay that is still effective
// when we do Put
// TODO(myabandeh): this is time dependent and could potentially make
// the test flaky
auto token = dbfull()->TEST_write_controler().GetDelayToken(1);
std::atomic<int> sleep_count(0);
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::DelayWrite:Sleep",
[&](void* arg) { sleep_count.fetch_add(1); });
std::atomic<int> wait_count(0);
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::DelayWrite:Wait",
[&](void* arg) { wait_count.fetch_add(1); });
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wo;
wo.sync = sync;
wo.disableWAL = disableWAL;
wo.no_slowdown = true;
dbfull()->Put(wo, "foo", "bar");
// We need the 2nd write to trigger delay. This is because delay is
// estimated based on the last write size which is 0 for the first write.
ASSERT_NOK(dbfull()->Put(wo, "foo2", "bar2"));
ASSERT_GE(sleep_count.load(), 0);
ASSERT_GE(wait_count.load(), 0);
token.reset();
token = dbfull()->TEST_write_controler().GetDelayToken(1000000000);
wo.no_slowdown = false;
ASSERT_OK(dbfull()->Put(wo, "foo3", "bar3"));
ASSERT_GE(sleep_count.load(), 1);
token.reset();
}
}
}
#ifndef ROCKSDB_LITE
TEST_F(DBTest, LevelLimitReopen) {
Options options = CurrentOptions();
CreateAndReopenWithCF({"pikachu"}, options);
const std::string value(1024 * 1024, ' ');
int i = 0;
while (NumTableFilesAtLevel(2, 1) == 0) {
ASSERT_OK(Put(1, Key(i++), value));
}
options.num_levels = 1;
options.max_bytes_for_level_multiplier_additional.resize(1, 1);
Status s = TryReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_EQ(s.IsInvalidArgument(), true);
ASSERT_EQ(s.ToString(),
"Invalid argument: db has more levels than options.num_levels");
options.num_levels = 10;
options.max_bytes_for_level_multiplier_additional.resize(10, 1);
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
}
#endif // ROCKSDB_LITE
TEST_F(DBTest, PutSingleDeleteGet) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_OK(Put(1, "foo2", "v2"));
ASSERT_EQ("v2", Get(1, "foo2"));
ASSERT_OK(SingleDelete(1, "foo"));
ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
// Skip HashCuckooRep as it does not support single delete. FIFO and
// universal compaction do not apply to the test case. Skip MergePut
// because single delete does not get removed when it encounters a merge.
} while (ChangeOptions(kSkipHashCuckoo | kSkipFIFOCompaction |
kSkipUniversalCompaction | kSkipMergePut));
}
TEST_F(DBTest, ReadFromPersistedTier) {
do {
Random rnd(301);
Options options = CurrentOptions();
for (int disableWAL = 0; disableWAL <= 1; ++disableWAL) {
CreateAndReopenWithCF({"pikachu"}, options);
WriteOptions wopt;
wopt.disableWAL = (disableWAL == 1);
// 1st round: put but not flush
ASSERT_OK(db_->Put(wopt, handles_[1], "foo", "first"));
ASSERT_OK(db_->Put(wopt, handles_[1], "bar", "one"));
ASSERT_EQ("first", Get(1, "foo"));
ASSERT_EQ("one", Get(1, "bar"));
// Read directly from persited data.
ReadOptions ropt;
ropt.read_tier = kPersistedTier;
std::string value;
if (wopt.disableWAL) {
// as data has not yet being flushed, we expect not found.
ASSERT_TRUE(db_->Get(ropt, handles_[1], "foo", &value).IsNotFound());
ASSERT_TRUE(db_->Get(ropt, handles_[1], "bar", &value).IsNotFound());
} else {
ASSERT_OK(db_->Get(ropt, handles_[1], "foo", &value));
ASSERT_OK(db_->Get(ropt, handles_[1], "bar", &value));
}
// Multiget
std::vector<ColumnFamilyHandle*> multiget_cfs;
multiget_cfs.push_back(handles_[1]);
multiget_cfs.push_back(handles_[1]);
std::vector<Slice> multiget_keys;
multiget_keys.push_back("foo");
multiget_keys.push_back("bar");
std::vector<std::string> multiget_values;
auto statuses =
db_->MultiGet(ropt, multiget_cfs, multiget_keys, &multiget_values);
if (wopt.disableWAL) {
ASSERT_TRUE(statuses[0].IsNotFound());
ASSERT_TRUE(statuses[1].IsNotFound());
} else {
ASSERT_OK(statuses[0]);
ASSERT_OK(statuses[1]);
}
// 2nd round: flush and put a new value in memtable.
ASSERT_OK(Flush(1));
ASSERT_OK(db_->Put(wopt, handles_[1], "rocksdb", "hello"));
// once the data has been flushed, we are able to get the
// data when kPersistedTier is used.
ASSERT_TRUE(db_->Get(ropt, handles_[1], "foo", &value).ok());
ASSERT_EQ(value, "first");
ASSERT_TRUE(db_->Get(ropt, handles_[1], "bar", &value).ok());
ASSERT_EQ(value, "one");
if (wopt.disableWAL) {
ASSERT_TRUE(
db_->Get(ropt, handles_[1], "rocksdb", &value).IsNotFound());
} else {
ASSERT_OK(db_->Get(ropt, handles_[1], "rocksdb", &value));
ASSERT_EQ(value, "hello");
}
// Expect same result in multiget
multiget_cfs.push_back(handles_[1]);
multiget_keys.push_back("rocksdb");
statuses =
db_->MultiGet(ropt, multiget_cfs, multiget_keys, &multiget_values);
ASSERT_TRUE(statuses[0].ok());
ASSERT_EQ("first", multiget_values[0]);
ASSERT_TRUE(statuses[1].ok());
ASSERT_EQ("one", multiget_values[1]);
if (wopt.disableWAL) {
ASSERT_TRUE(statuses[2].IsNotFound());
} else {
ASSERT_OK(statuses[2]);
}
// 3rd round: delete and flush
ASSERT_OK(db_->Delete(wopt, handles_[1], "foo"));
Flush(1);
ASSERT_OK(db_->Delete(wopt, handles_[1], "bar"));
ASSERT_TRUE(db_->Get(ropt, handles_[1], "foo", &value).IsNotFound());
if (wopt.disableWAL) {
// Still expect finding the value as its delete has not yet being
// flushed.
ASSERT_TRUE(db_->Get(ropt, handles_[1], "bar", &value).ok());
ASSERT_EQ(value, "one");
} else {
ASSERT_TRUE(db_->Get(ropt, handles_[1], "bar", &value).IsNotFound());
}
ASSERT_TRUE(db_->Get(ropt, handles_[1], "rocksdb", &value).ok());
ASSERT_EQ(value, "hello");
statuses =
db_->MultiGet(ropt, multiget_cfs, multiget_keys, &multiget_values);
ASSERT_TRUE(statuses[0].IsNotFound());
if (wopt.disableWAL) {
ASSERT_TRUE(statuses[1].ok());
ASSERT_EQ("one", multiget_values[1]);
} else {
ASSERT_TRUE(statuses[1].IsNotFound());
}
ASSERT_TRUE(statuses[2].ok());
ASSERT_EQ("hello", multiget_values[2]);
if (wopt.disableWAL == 0) {
DestroyAndReopen(options);
}
}
} while (ChangeOptions(kSkipHashCuckoo));
}
TEST_F(DBTest, SingleDeleteFlush) {
// Test to check whether flushing preserves a single delete hidden
// behind a put.
do {
Random rnd(301);
Options options = CurrentOptions();
options.disable_auto_compactions = true;
CreateAndReopenWithCF({"pikachu"}, options);
// Put values on second level (so that they will not be in the same
// compaction as the other operations.
Put(1, "foo", "first");
Put(1, "bar", "one");
ASSERT_OK(Flush(1));
MoveFilesToLevel(2, 1);
// (Single) delete hidden by a put
SingleDelete(1, "foo");
Put(1, "foo", "second");
Delete(1, "bar");
Put(1, "bar", "two");
ASSERT_OK(Flush(1));
SingleDelete(1, "foo");
Delete(1, "bar");
ASSERT_OK(Flush(1));
dbfull()->CompactRange(CompactRangeOptions(), handles_[1], nullptr,
nullptr);
ASSERT_EQ("NOT_FOUND", Get(1, "bar"));
ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
// Skip HashCuckooRep as it does not support single delete. FIFO and
// universal compaction do not apply to the test case. Skip MergePut
// because merges cannot be combined with single deletions.
} while (ChangeOptions(kSkipHashCuckoo | kSkipFIFOCompaction |
kSkipUniversalCompaction | kSkipMergePut));
}
TEST_F(DBTest, SingleDeletePutFlush) {
// Single deletes that encounter the matching put in a flush should get
// removed.
do {
Random rnd(301);
Options options = CurrentOptions();
options.disable_auto_compactions = true;
CreateAndReopenWithCF({"pikachu"}, options);
Put(1, "foo", Slice());
Put(1, "a", Slice());
SingleDelete(1, "a");
ASSERT_OK(Flush(1));
ASSERT_EQ("[ ]", AllEntriesFor("a", 1));
// Skip HashCuckooRep as it does not support single delete. FIFO and
// universal compaction do not apply to the test case. Skip MergePut
// because merges cannot be combined with single deletions.
} while (ChangeOptions(kSkipHashCuckoo | kSkipFIFOCompaction |
kSkipUniversalCompaction | kSkipMergePut));
}
// Disable because not all platform can run it.
// It requires more than 9GB memory to run it, With single allocation
// of more than 3GB.
TEST_F(DBTest, DISABLED_SanitizeVeryVeryLargeValue) {
const size_t kValueSize = 4 * size_t{1024 * 1024 * 1024}; // 4GB value
std::string raw(kValueSize, 'v');
Options options = CurrentOptions();
options.env = env_;
options.merge_operator = MergeOperators::CreatePutOperator();
options.write_buffer_size = 100000; // Small write buffer
options.paranoid_checks = true;
DestroyAndReopen(options);
ASSERT_OK(Put("boo", "v1"));
ASSERT_TRUE(Put("foo", raw).IsInvalidArgument());
ASSERT_TRUE(Merge("foo", raw).IsInvalidArgument());
WriteBatch wb;
ASSERT_TRUE(wb.Put("foo", raw).IsInvalidArgument());
ASSERT_TRUE(wb.Merge("foo", raw).IsInvalidArgument());
Slice value_slice = raw;
Slice key_slice = "foo";
SliceParts sp_key(&key_slice, 1);
SliceParts sp_value(&value_slice, 1);
ASSERT_TRUE(wb.Put(sp_key, sp_value).IsInvalidArgument());
ASSERT_TRUE(wb.Merge(sp_key, sp_value).IsInvalidArgument());
}
// Disable because not all platform can run it.
// It requires more than 9GB memory to run it, With single allocation
// of more than 3GB.
TEST_F(DBTest, DISABLED_VeryLargeValue) {
const size_t kValueSize = 3221225472u; // 3GB value
const size_t kKeySize = 8388608u; // 8MB key
std::string raw(kValueSize, 'v');
std::string key1(kKeySize, 'c');
std::string key2(kKeySize, 'd');
Options options = CurrentOptions();
options.env = env_;
options.write_buffer_size = 100000; // Small write buffer
options.paranoid_checks = true;
DestroyAndReopen(options);
ASSERT_OK(Put("boo", "v1"));
ASSERT_OK(Put("foo", "v1"));
ASSERT_OK(Put(key1, raw));
raw[0] = 'w';
ASSERT_OK(Put(key2, raw));
dbfull()->TEST_WaitForFlushMemTable();
#ifndef ROCKSDB_LITE
ASSERT_EQ(1, NumTableFilesAtLevel(0));
#endif // !ROCKSDB_LITE
std::string value;
Status s = db_->Get(ReadOptions(), key1, &value);
ASSERT_OK(s);
ASSERT_EQ(kValueSize, value.size());
ASSERT_EQ('v', value[0]);
s = db_->Get(ReadOptions(), key2, &value);
ASSERT_OK(s);
ASSERT_EQ(kValueSize, value.size());
ASSERT_EQ('w', value[0]);
// Compact all files.
Flush();
db_->CompactRange(CompactRangeOptions(), nullptr, nullptr);
// Check DB is not in read-only state.
ASSERT_OK(Put("boo", "v1"));
s = db_->Get(ReadOptions(), key1, &value);
ASSERT_OK(s);
ASSERT_EQ(kValueSize, value.size());
ASSERT_EQ('v', value[0]);
s = db_->Get(ReadOptions(), key2, &value);
ASSERT_OK(s);
ASSERT_EQ(kValueSize, value.size());
ASSERT_EQ('w', value[0]);
}
TEST_F(DBTest, GetFromImmutableLayer) {
do {
Options options = CurrentOptions();
options.env = env_;
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_EQ("v1", Get(1, "foo"));
// Block sync calls
env_->delay_sstable_sync_.store(true, std::memory_order_release);
Put(1, "k1", std::string(100000, 'x')); // Fill memtable
Put(1, "k2", std::string(100000, 'y')); // Trigger flush
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_EQ("NOT_FOUND", Get(0, "foo"));
// Release sync calls
env_->delay_sstable_sync_.store(false, std::memory_order_release);
} while (ChangeOptions());
}
TEST_F(DBTest, GetLevel0Ordering) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
// Check that we process level-0 files in correct order. The code
// below generates two level-0 files where the earlier one comes
// before the later one in the level-0 file list since the earlier
// one has a smaller "smallest" key.
ASSERT_OK(Put(1, "bar", "b"));
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_OK(Flush(1));
ASSERT_OK(Put(1, "foo", "v2"));
ASSERT_OK(Flush(1));
ASSERT_EQ("v2", Get(1, "foo"));
} while (ChangeOptions());
}
TEST_F(DBTest, WrongLevel0Config) {
Options options = CurrentOptions();
Close();
ASSERT_OK(DestroyDB(dbname_, options));
options.level0_stop_writes_trigger = 1;
options.level0_slowdown_writes_trigger = 2;
options.level0_file_num_compaction_trigger = 3;
ASSERT_OK(DB::Open(options, dbname_, &db_));
}
#ifndef ROCKSDB_LITE
TEST_F(DBTest, GetOrderedByLevels) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
ASSERT_OK(Put(1, "foo", "v1"));
Compact(1, "a", "z");
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_OK(Put(1, "foo", "v2"));
ASSERT_EQ("v2", Get(1, "foo"));
ASSERT_OK(Flush(1));
ASSERT_EQ("v2", Get(1, "foo"));
} while (ChangeOptions());
}
TEST_F(DBTest, GetPicksCorrectFile) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
// Arrange to have multiple files in a non-level-0 level.
ASSERT_OK(Put(1, "a", "va"));
Compact(1, "a", "b");
ASSERT_OK(Put(1, "x", "vx"));
Compact(1, "x", "y");
ASSERT_OK(Put(1, "f", "vf"));
Compact(1, "f", "g");
ASSERT_EQ("va", Get(1, "a"));
ASSERT_EQ("vf", Get(1, "f"));
ASSERT_EQ("vx", Get(1, "x"));
} while (ChangeOptions());
}
TEST_F(DBTest, GetEncountersEmptyLevel) {
do {
Options options = CurrentOptions();
CreateAndReopenWithCF({"pikachu"}, options);
// Arrange for the following to happen:
// * sstable A in level 0
// * nothing in level 1
// * sstable B in level 2
// Then do enough Get() calls to arrange for an automatic compaction
// of sstable A. A bug would cause the compaction to be marked as
// occurring at level 1 (instead of the correct level 0).
// Step 1: First place sstables in levels 0 and 2
Put(1, "a", "begin");
Put(1, "z", "end");
ASSERT_OK(Flush(1));
dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]);
dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
Put(1, "a", "begin");
Put(1, "z", "end");
ASSERT_OK(Flush(1));
ASSERT_GT(NumTableFilesAtLevel(0, 1), 0);
ASSERT_GT(NumTableFilesAtLevel(2, 1), 0);
// Step 2: clear level 1 if necessary.
dbfull()->TEST_CompactRange(1, nullptr, nullptr, handles_[1]);
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 1);
ASSERT_EQ(NumTableFilesAtLevel(1, 1), 0);
ASSERT_EQ(NumTableFilesAtLevel(2, 1), 1);
// Step 3: read a bunch of times
for (int i = 0; i < 1000; i++) {
ASSERT_EQ("NOT_FOUND", Get(1, "missing"));
}
// Step 4: Wait for compaction to finish
dbfull()->TEST_WaitForCompact();
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 1); // XXX
} while (ChangeOptions(kSkipUniversalCompaction | kSkipFIFOCompaction));
}
#endif // ROCKSDB_LITE
TEST_F(DBTest, FlushMultipleMemtable) {
do {
Options options = CurrentOptions();
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
options.max_write_buffer_number = 4;
options.min_write_buffer_number_to_merge = 3;
options.max_write_buffer_number_to_maintain = -1;
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v1"));
ASSERT_OK(Flush(1));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v1"));
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_EQ("v1", Get(1, "bar"));
ASSERT_OK(Flush(1));
} while (ChangeCompactOptions());
}
#ifndef ROCKSDB_LITE
TEST_F(DBTest, FlushSchedule) {
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.level0_stop_writes_trigger = 1 << 10;
options.level0_slowdown_writes_trigger = 1 << 10;
options.min_write_buffer_number_to_merge = 1;
options.max_write_buffer_number_to_maintain = 1;
options.max_write_buffer_number = 2;
options.write_buffer_size = 120 * 1024;
CreateAndReopenWithCF({"pikachu"}, options);
std::vector<port::Thread> threads;
std::atomic<int> thread_num(0);
// each column family will have 5 thread, each thread generating 2 memtables.
// each column family should end up with 10 table files
std::function<void()> fill_memtable_func = [&]() {
int a = thread_num.fetch_add(1);
Random rnd(a);
WriteOptions wo;
// this should fill up 2 memtables
for (int k = 0; k < 5000; ++k) {
ASSERT_OK(db_->Put(wo, handles_[a & 1], RandomString(&rnd, 13), ""));
}
};
for (int i = 0; i < 10; ++i) {
threads.emplace_back(fill_memtable_func);
}
for (auto& t : threads) {
t.join();
}
auto default_tables = GetNumberOfSstFilesForColumnFamily(db_, "default");
auto pikachu_tables = GetNumberOfSstFilesForColumnFamily(db_, "pikachu");
ASSERT_LE(default_tables, static_cast<uint64_t>(10));
ASSERT_GT(default_tables, static_cast<uint64_t>(0));
ASSERT_LE(pikachu_tables, static_cast<uint64_t>(10));
ASSERT_GT(pikachu_tables, static_cast<uint64_t>(0));
}
#endif // ROCKSDB_LITE
namespace {
class KeepFilter : public CompactionFilter {
public:
virtual bool Filter(int /*level*/, const Slice& /*key*/,
const Slice& /*value*/, std::string* /*new_value*/,
bool* /*value_changed*/) const override {
return false;
}
virtual const char* Name() const override { return "KeepFilter"; }
};
class KeepFilterFactory : public CompactionFilterFactory {
public:
explicit KeepFilterFactory(bool check_context = false)
: check_context_(check_context) {}
virtual std::unique_ptr<CompactionFilter> CreateCompactionFilter(
const CompactionFilter::Context& context) override {
if (check_context_) {
EXPECT_EQ(expect_full_compaction_.load(), context.is_full_compaction);
EXPECT_EQ(expect_manual_compaction_.load(), context.is_manual_compaction);
}
return std::unique_ptr<CompactionFilter>(new KeepFilter());
}
virtual const char* Name() const override { return "KeepFilterFactory"; }
bool check_context_;
std::atomic_bool expect_full_compaction_;
std::atomic_bool expect_manual_compaction_;
};
class DelayFilter : public CompactionFilter {
public:
explicit DelayFilter(DBTestBase* d) : db_test(d) {}
virtual bool Filter(int /*level*/, const Slice& /*key*/,
const Slice& /*value*/, std::string* /*new_value*/,
bool* /*value_changed*/) const override {
db_test->env_->addon_time_.fetch_add(1000);
return true;
}
virtual const char* Name() const override { return "DelayFilter"; }
private:
DBTestBase* db_test;
};
class DelayFilterFactory : public CompactionFilterFactory {
public:
explicit DelayFilterFactory(DBTestBase* d) : db_test(d) {}
virtual std::unique_ptr<CompactionFilter> CreateCompactionFilter(
const CompactionFilter::Context& /*context*/) override {
return std::unique_ptr<CompactionFilter>(new DelayFilter(db_test));
}
virtual const char* Name() const override { return "DelayFilterFactory"; }
private:
DBTestBase* db_test;
};
} // namespace
#ifndef ROCKSDB_LITE
static std::string CompressibleString(Random* rnd, int len) {
std::string r;
test::CompressibleString(rnd, 0.8, len, &r);
return r;
}
#endif // ROCKSDB_LITE
TEST_F(DBTest, FailMoreDbPaths) {
Options options = CurrentOptions();
options.db_paths.emplace_back(dbname_, 10000000);
options.db_paths.emplace_back(dbname_ + "_2", 1000000);
options.db_paths.emplace_back(dbname_ + "_3", 1000000);
options.db_paths.emplace_back(dbname_ + "_4", 1000000);
options.db_paths.emplace_back(dbname_ + "_5", 1000000);
ASSERT_TRUE(TryReopen(options).IsNotSupported());
}
void CheckColumnFamilyMeta(const ColumnFamilyMetaData& cf_meta) {
uint64_t cf_size = 0;
uint64_t cf_csize = 0;
size_t file_count = 0;
for (auto level_meta : cf_meta.levels) {
uint64_t level_size = 0;
uint64_t level_csize = 0;
file_count += level_meta.files.size();
for (auto file_meta : level_meta.files) {
level_size += file_meta.size;
}
ASSERT_EQ(level_meta.size, level_size);
cf_size += level_size;
cf_csize += level_csize;
}
ASSERT_EQ(cf_meta.file_count, file_count);
ASSERT_EQ(cf_meta.size, cf_size);
}
#ifndef ROCKSDB_LITE
TEST_F(DBTest, ColumnFamilyMetaDataTest) {
Options options = CurrentOptions();
options.create_if_missing = true;
DestroyAndReopen(options);
Random rnd(301);
int key_index = 0;
ColumnFamilyMetaData cf_meta;
for (int i = 0; i < 100; ++i) {
GenerateNewFile(&rnd, &key_index);
db_->GetColumnFamilyMetaData(&cf_meta);
CheckColumnFamilyMeta(cf_meta);
}
}
namespace {
void MinLevelHelper(DBTest* self, Options& options) {
Random rnd(301);
for (int num = 0; num < options.level0_file_num_compaction_trigger - 1;
num++) {
std::vector<std::string> values;
// Write 120KB (12 values, each 10K)
for (int i = 0; i < 12; i++) {
values.push_back(DBTestBase::RandomString(&rnd, 10000));
ASSERT_OK(self->Put(DBTestBase::Key(i), values[i]));
}
self->dbfull()->TEST_WaitForFlushMemTable();
ASSERT_EQ(self->NumTableFilesAtLevel(0), num + 1);
}
// generate one more file in level-0, and should trigger level-0 compaction
std::vector<std::string> values;
for (int i = 0; i < 12; i++) {
values.push_back(DBTestBase::RandomString(&rnd, 10000));
ASSERT_OK(self->Put(DBTestBase::Key(i), values[i]));
}
self->dbfull()->TEST_WaitForCompact();
ASSERT_EQ(self->NumTableFilesAtLevel(0), 0);
ASSERT_EQ(self->NumTableFilesAtLevel(1), 1);
}
// returns false if the calling-Test should be skipped
bool MinLevelToCompress(CompressionType& type, Options& options, int wbits,
int lev, int strategy) {
fprintf(stderr,
"Test with compression options : window_bits = %d, level = %d, "
"strategy = %d}\n",
wbits, lev, strategy);
options.write_buffer_size = 100 << 10; // 100KB
options.arena_block_size = 4096;
options.num_levels = 3;
options.level0_file_num_compaction_trigger = 3;
options.create_if_missing = true;
if (Snappy_Supported()) {
type = kSnappyCompression;
fprintf(stderr, "using snappy\n");
} else if (Zlib_Supported()) {
type = kZlibCompression;
fprintf(stderr, "using zlib\n");
} else if (BZip2_Supported()) {
type = kBZip2Compression;
fprintf(stderr, "using bzip2\n");
} else if (LZ4_Supported()) {
type = kLZ4Compression;
fprintf(stderr, "using lz4\n");
} else if (XPRESS_Supported()) {
type = kXpressCompression;
fprintf(stderr, "using xpress\n");
} else if (ZSTD_Supported()) {
type = kZSTD;
fprintf(stderr, "using ZSTD\n");
} else {
fprintf(stderr, "skipping test, compression disabled\n");
return false;
}
options.compression_per_level.resize(options.num_levels);
// do not compress L0
for (int i = 0; i < 1; i++) {
options.compression_per_level[i] = kNoCompression;
}
for (int i = 1; i < options.num_levels; i++) {
options.compression_per_level[i] = type;
}
return true;
}
} // namespace
TEST_F(DBTest, MinLevelToCompress1) {
Options options = CurrentOptions();
CompressionType type = kSnappyCompression;
if (!MinLevelToCompress(type, options, -14, -1, 0)) {
return;
}
Reopen(options);
MinLevelHelper(this, options);
// do not compress L0 and L1
for (int i = 0; i < 2; i++) {
options.compression_per_level[i] = kNoCompression;
}
for (int i = 2; i < options.num_levels; i++) {
options.compression_per_level[i] = type;
}
DestroyAndReopen(options);
MinLevelHelper(this, options);
}
TEST_F(DBTest, MinLevelToCompress2) {
Options options = CurrentOptions();
CompressionType type = kSnappyCompression;
if (!MinLevelToCompress(type, options, 15, -1, 0)) {
return;
}
Reopen(options);
MinLevelHelper(this, options);
// do not compress L0 and L1
for (int i = 0; i < 2; i++) {
options.compression_per_level[i] = kNoCompression;
}
for (int i = 2; i < options.num_levels; i++) {
options.compression_per_level[i] = type;
}
DestroyAndReopen(options);
MinLevelHelper(this, options);
}
// This test may fail because of a legit case that multiple L0 files
// are trivial moved to L1.
TEST_F(DBTest, DISABLED_RepeatedWritesToSameKey) {
do {
Options options = CurrentOptions();
options.env = env_;
options.write_buffer_size = 100000; // Small write buffer
CreateAndReopenWithCF({"pikachu"}, options);
// We must have at most one file per level except for level-0,
// which may have up to kL0_StopWritesTrigger files.
const int kMaxFiles =
options.num_levels + options.level0_stop_writes_trigger;
Random rnd(301);
std::string value =
RandomString(&rnd, static_cast<int>(2 * options.write_buffer_size));
for (int i = 0; i < 5 * kMaxFiles; i++) {