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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 the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same 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 "db/db_impl.h"
#include "db/db_test_util.h"
#include "db/dbformat.h"
#include "db/filename.h"
#include "db/job_context.h"
#include "db/version_set.h"
#include "db/write_batch_internal.h"
#include "memtable/hash_linklist_rep.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/hash.h"
#include "util/logging.h"
#include "util/mock_env.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 "util/thread_status_util.h"
#include "util/xfunc.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, OpenWhenOpen) {
Options options = CurrentOptions();
options.env = env_;
rocksdb::DB* db2 = nullptr;
rocksdb::Status s = DB::Open(options, dbname_, &db2);
ASSERT_EQ(Status::Code::kIOError, s.code());
ASSERT_EQ(Status::SubCode::kNone, s.subcode());
ASSERT_TRUE(strstr(s.getState(), "lock ") != nullptr);
delete db2;
}
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}) {
// 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, ReadOnlyDB) {
ASSERT_OK(Put("foo", "v1"));
ASSERT_OK(Put("bar", "v2"));
ASSERT_OK(Put("foo", "v3"));
Close();
auto options = CurrentOptions();
assert(options.env = env_);
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ("v3", Get("foo"));
ASSERT_EQ("v2", Get("bar"));
Iterator* iter = db_->NewIterator(ReadOptions());
int count = 0;
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
ASSERT_OK(iter->status());
++count;
}
ASSERT_EQ(count, 2);
delete iter;
Close();
// Reopen and flush memtable.
Reopen(options);
Flush();
Close();
// Now check keys in read only mode.
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ("v3", Get("foo"));
ASSERT_EQ("v2", Get("bar"));
ASSERT_TRUE(db_->SyncWAL().IsNotSupported());
}
TEST_F(DBTest, CompactedDB) {
const uint64_t kFileSize = 1 << 20;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.write_buffer_size = kFileSize;
options.target_file_size_base = kFileSize;
options.max_bytes_for_level_base = 1 << 30;
options.compression = kNoCompression;
Reopen(options);
// 1 L0 file, use CompactedDB if max_open_files = -1
ASSERT_OK(Put("aaa", DummyString(kFileSize / 2, '1')));
Flush();
Close();
ASSERT_OK(ReadOnlyReopen(options));
Status s = Put("new", "value");
ASSERT_EQ(s.ToString(),
"Not implemented: Not supported operation in read only mode.");
ASSERT_EQ(DummyString(kFileSize / 2, '1'), Get("aaa"));
Close();
options.max_open_files = -1;
ASSERT_OK(ReadOnlyReopen(options));
s = Put("new", "value");
ASSERT_EQ(s.ToString(),
"Not implemented: Not supported in compacted db mode.");
ASSERT_EQ(DummyString(kFileSize / 2, '1'), Get("aaa"));
Close();
Reopen(options);
// Add more L0 files
ASSERT_OK(Put("bbb", DummyString(kFileSize / 2, '2')));
Flush();
ASSERT_OK(Put("aaa", DummyString(kFileSize / 2, 'a')));
Flush();
ASSERT_OK(Put("bbb", DummyString(kFileSize / 2, 'b')));
ASSERT_OK(Put("eee", DummyString(kFileSize / 2, 'e')));
Flush();
Close();
ASSERT_OK(ReadOnlyReopen(options));
// Fallback to read-only DB
s = Put("new", "value");
ASSERT_EQ(s.ToString(),
"Not implemented: Not supported operation in read only mode.");
Close();
// Full compaction
Reopen(options);
// Add more keys
ASSERT_OK(Put("fff", DummyString(kFileSize / 2, 'f')));
ASSERT_OK(Put("hhh", DummyString(kFileSize / 2, 'h')));
ASSERT_OK(Put("iii", DummyString(kFileSize / 2, 'i')));
ASSERT_OK(Put("jjj", DummyString(kFileSize / 2, 'j')));
db_->CompactRange(CompactRangeOptions(), nullptr, nullptr);
ASSERT_EQ(3, NumTableFilesAtLevel(1));
Close();
// CompactedDB
ASSERT_OK(ReadOnlyReopen(options));
s = Put("new", "value");
ASSERT_EQ(s.ToString(),
"Not implemented: Not supported in compacted db mode.");
ASSERT_EQ("NOT_FOUND", Get("abc"));
ASSERT_EQ(DummyString(kFileSize / 2, 'a'), Get("aaa"));
ASSERT_EQ(DummyString(kFileSize / 2, 'b'), Get("bbb"));
ASSERT_EQ("NOT_FOUND", Get("ccc"));
ASSERT_EQ(DummyString(kFileSize / 2, 'e'), Get("eee"));
ASSERT_EQ(DummyString(kFileSize / 2, 'f'), Get("fff"));
ASSERT_EQ("NOT_FOUND", Get("ggg"));
ASSERT_EQ(DummyString(kFileSize / 2, 'h'), Get("hhh"));
ASSERT_EQ(DummyString(kFileSize / 2, 'i'), Get("iii"));
ASSERT_EQ(DummyString(kFileSize / 2, 'j'), Get("jjj"));
ASSERT_EQ("NOT_FOUND", Get("kkk"));
// MultiGet
std::vector<std::string> values;
std::vector<Status> status_list = dbfull()->MultiGet(
ReadOptions(),
std::vector<Slice>({Slice("aaa"), Slice("ccc"), Slice("eee"),
Slice("ggg"), Slice("iii"), Slice("kkk")}),
&values);
ASSERT_EQ(status_list.size(), static_cast<uint64_t>(6));
ASSERT_EQ(values.size(), static_cast<uint64_t>(6));
ASSERT_OK(status_list[0]);
ASSERT_EQ(DummyString(kFileSize / 2, 'a'), values[0]);
ASSERT_TRUE(status_list[1].IsNotFound());
ASSERT_OK(status_list[2]);
ASSERT_EQ(DummyString(kFileSize / 2, 'e'), values[2]);
ASSERT_TRUE(status_list[3].IsNotFound());
ASSERT_OK(status_list[4]);
ASSERT_EQ(DummyString(kFileSize / 2, 'i'), values[4]);
ASSERT_TRUE(status_list[5].IsNotFound());
Reopen(options);
// Add a key
ASSERT_OK(Put("fff", DummyString(kFileSize / 2, 'f')));
Close();
ASSERT_OK(ReadOnlyReopen(options));
s = Put("new", "value");
ASSERT_EQ(s.ToString(),
"Not implemented: Not supported operation in read only mode.");
}
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, PutDeleteGet) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_OK(Put(1, "foo", "v2"));
ASSERT_EQ("v2", Get(1, "foo"));
ASSERT_OK(Delete(1, "foo"));
ASSERT_EQ("NOT_FOUND", Get(1, "foo"));
} while (ChangeOptions());
}
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));
}
TEST_F(DBTest, EmptyFlush) {
// It is possible to produce empty flushes when using single deletes. Tests
// whether empty flushes cause issues.
do {
Random rnd(301);
Options options = CurrentOptions();
options.disable_auto_compactions = true;
CreateAndReopenWithCF({"pikachu"}, options);
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_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();
ASSERT_EQ(1, NumTableFilesAtLevel(0));
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, GetFromVersions) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
ASSERT_OK(Put(1, "foo", "v1"));
ASSERT_OK(Flush(1));
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_EQ("NOT_FOUND", Get(0, "foo"));
} while (ChangeOptions());
}
#ifndef ROCKSDB_LITE
TEST_F(DBTest, GetSnapshot) {
anon::OptionsOverride options_override;
options_override.skip_policy = kSkipNoSnapshot;
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions(options_override));
// Try with both a short key and a long key
for (int i = 0; i < 2; i++) {
std::string key = (i == 0) ? std::string("foo") : std::string(200, 'x');
ASSERT_OK(Put(1, key, "v1"));
const Snapshot* s1 = db_->GetSnapshot();
if (option_config_ == kHashCuckoo) {
// Unsupported case.
ASSERT_TRUE(s1 == nullptr);
break;
}
ASSERT_OK(Put(1, key, "v2"));
ASSERT_EQ("v2", Get(1, key));
ASSERT_EQ("v1", Get(1, key, s1));
ASSERT_OK(Flush(1));
ASSERT_EQ("v2", Get(1, key));
ASSERT_EQ("v1", Get(1, key, s1));
db_->ReleaseSnapshot(s1);
}
} while (ChangeOptions());
}
#endif // ROCKSDB_LITE
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();
options.disableDataSync = true;
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, CheckLock) {
do {
DB* localdb;
Options options = CurrentOptions();
ASSERT_OK(TryReopen(options));
// second open should fail
ASSERT_TRUE(!(DB::Open(options, dbname_, &localdb)).ok());
} while (ChangeCompactOptions());
}
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());
}
TEST_F(DBTest, FlushEmptyColumnFamily) {
// Block flush thread and disable compaction thread
env_->SetBackgroundThreads(1, Env::HIGH);
env_->SetBackgroundThreads(1, Env::LOW);
test::SleepingBackgroundTask sleeping_task_low;
env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask, &sleeping_task_low,
Env::Priority::LOW);
test::SleepingBackgroundTask sleeping_task_high;
env_->Schedule(&test::SleepingBackgroundTask::DoSleepTask,
&sleeping_task_high, Env::Priority::HIGH);
Options options = CurrentOptions();
// disable compaction
options.disable_auto_compactions = true;
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
options.max_write_buffer_number = 2;
options.min_write_buffer_number_to_merge = 1;
options.max_write_buffer_number_to_maintain = 1;
CreateAndReopenWithCF({"pikachu"}, options);
// Compaction can still go through even if no thread can flush the
// mem table.
ASSERT_OK(Flush(0));
ASSERT_OK(Flush(1));
// Insert can go through
ASSERT_OK(dbfull()->Put(writeOpt, handles_[0], "foo", "v1"));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v1"));
ASSERT_EQ("v1", Get(0, "foo"));
ASSERT_EQ("v1", Get(1, "bar"));
sleeping_task_high.WakeUp();
sleeping_task_high.WaitUntilDone();
// Flush can still go through.
ASSERT_OK(Flush(0));
ASSERT_OK(Flush(1));
sleeping_task_low.WakeUp();
sleeping_task_low.WaitUntilDone();
}
TEST_F(DBTest, FLUSH) {
do {
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
WriteOptions writeOpt = WriteOptions();
writeOpt.disableWAL = true;
SetPerfLevel(kEnableTime);
;
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v1"));
// this will now also flush the last 2 writes
ASSERT_OK(Flush(1));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v1"));
perf_context.Reset();
Get(1, "foo");
ASSERT_TRUE((int)perf_context.get_from_output_files_time > 0);
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_EQ("v1", Get(1, "bar"));
writeOpt.disableWAL = true;
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v2"));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v2"));
ASSERT_OK(Flush(1));
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
ASSERT_EQ("v2", Get(1, "bar"));
perf_context.Reset();
ASSERT_EQ("v2", Get(1, "foo"));
ASSERT_TRUE((int)perf_context.get_from_output_files_time > 0);
writeOpt.disableWAL = false;
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v3"));
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v3"));
ASSERT_OK(Flush(1));
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
// 'foo' should be there because its put
// has WAL enabled.
ASSERT_EQ("v3", Get(1, "foo"));
ASSERT_EQ("v3", Get(1, "bar"));
SetPerfLevel(kDisable);
} 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);