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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.
// This source code is also licensed under the GPLv2 license found in the
// COPYING file in the root directory of this source tree.
#include <functional>
#include "db/db_test_util.h"
#include "port/port.h"
#include "port/stack_trace.h"
#include "rocksdb/sst_file_writer.h"
#include "util/testutil.h"
namespace rocksdb {
#ifndef ROCKSDB_LITE
class ExternalSSTFileBasicTest : public DBTestBase {
public:
ExternalSSTFileBasicTest() : DBTestBase("/external_sst_file_test") {
sst_files_dir_ = dbname_ + "/sst_files/";
DestroyAndRecreateExternalSSTFilesDir();
}
void DestroyAndRecreateExternalSSTFilesDir() {
test::DestroyDir(env_, sst_files_dir_);
env_->CreateDir(sst_files_dir_);
}
Status DeprecatedAddFile(const std::vector<std::string>& files,
bool move_files = false,
bool skip_snapshot_check = false) {
IngestExternalFileOptions opts;
opts.move_files = move_files;
opts.snapshot_consistency = !skip_snapshot_check;
opts.allow_global_seqno = false;
opts.allow_blocking_flush = false;
return db_->IngestExternalFile(files, opts);
}
Status GenerateAndAddExternalFile(
const Options options, std::vector<int> keys, int file_id,
std::map<std::string, std::string>* true_data) {
std::string file_path = sst_files_dir_ + ToString(file_id);
SstFileWriter sst_file_writer(EnvOptions(), options);
Status s = sst_file_writer.Open(file_path);
if (!s.ok()) {
return s;
}
for (int k : keys) {
std::string key = Key(k);
std::string value = Key(k) + ToString(file_id);
s = sst_file_writer.Add(key, value);
(*true_data)[key] = value;
if (!s.ok()) {
sst_file_writer.Finish();
return s;
}
}
s = sst_file_writer.Finish();
if (s.ok()) {
IngestExternalFileOptions ifo;
ifo.allow_global_seqno = true;
s = db_->IngestExternalFile({file_path}, ifo);
}
return s;
}
~ExternalSSTFileBasicTest() { test::DestroyDir(env_, sst_files_dir_); }
protected:
std::string sst_files_dir_;
};
TEST_F(ExternalSSTFileBasicTest, Basic) {
Options options = CurrentOptions();
SstFileWriter sst_file_writer(EnvOptions(), options);
// Current file size should be 0 after sst_file_writer init and before open a
// file.
ASSERT_EQ(sst_file_writer.FileSize(), 0);
// file1.sst (0 => 99)
std::string file1 = sst_files_dir_ + "file1.sst";
ASSERT_OK(sst_file_writer.Open(file1));
for (int k = 0; k < 100; k++) {
ASSERT_OK(sst_file_writer.Add(Key(k), Key(k) + "_val"));
}
ExternalSstFileInfo file1_info;
Status s = sst_file_writer.Finish(&file1_info);
ASSERT_TRUE(s.ok()) << s.ToString();
// Current file size should be non-zero after success write.
ASSERT_GT(sst_file_writer.FileSize(), 0);
ASSERT_EQ(file1_info.file_path, file1);
ASSERT_EQ(file1_info.num_entries, 100);
ASSERT_EQ(file1_info.smallest_key, Key(0));
ASSERT_EQ(file1_info.largest_key, Key(99));
// sst_file_writer already finished, cannot add this value
s = sst_file_writer.Add(Key(100), "bad_val");
ASSERT_FALSE(s.ok()) << s.ToString();
DestroyAndReopen(options);
// Add file using file path
s = DeprecatedAddFile({file1});
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_EQ(db_->GetLatestSequenceNumber(), 0U);
for (int k = 0; k < 100; k++) {
ASSERT_EQ(Get(Key(k)), Key(k) + "_val");
}
DestroyAndRecreateExternalSSTFilesDir();
}
TEST_F(ExternalSSTFileBasicTest, NoCopy) {
Options options = CurrentOptions();
const ImmutableCFOptions ioptions(options);
SstFileWriter sst_file_writer(EnvOptions(), options);
// file1.sst (0 => 99)
std::string file1 = sst_files_dir_ + "file1.sst";
ASSERT_OK(sst_file_writer.Open(file1));
for (int k = 0; k < 100; k++) {
ASSERT_OK(sst_file_writer.Add(Key(k), Key(k) + "_val"));
}
ExternalSstFileInfo file1_info;
Status s = sst_file_writer.Finish(&file1_info);
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_EQ(file1_info.file_path, file1);
ASSERT_EQ(file1_info.num_entries, 100);
ASSERT_EQ(file1_info.smallest_key, Key(0));
ASSERT_EQ(file1_info.largest_key, Key(99));
// file2.sst (100 => 299)
std::string file2 = sst_files_dir_ + "file2.sst";
ASSERT_OK(sst_file_writer.Open(file2));
for (int k = 100; k < 300; k++) {
ASSERT_OK(sst_file_writer.Add(Key(k), Key(k) + "_val"));
}
ExternalSstFileInfo file2_info;
s = sst_file_writer.Finish(&file2_info);
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_EQ(file2_info.file_path, file2);
ASSERT_EQ(file2_info.num_entries, 200);
ASSERT_EQ(file2_info.smallest_key, Key(100));
ASSERT_EQ(file2_info.largest_key, Key(299));
// file3.sst (110 => 124) .. overlap with file2.sst
std::string file3 = sst_files_dir_ + "file3.sst";
ASSERT_OK(sst_file_writer.Open(file3));
for (int k = 110; k < 125; k++) {
ASSERT_OK(sst_file_writer.Add(Key(k), Key(k) + "_val_overlap"));
}
ExternalSstFileInfo file3_info;
s = sst_file_writer.Finish(&file3_info);
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_EQ(file3_info.file_path, file3);
ASSERT_EQ(file3_info.num_entries, 15);
ASSERT_EQ(file3_info.smallest_key, Key(110));
ASSERT_EQ(file3_info.largest_key, Key(124));
s = DeprecatedAddFile({file1}, true /* move file */);
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_EQ(Status::NotFound(), env_->FileExists(file1));
s = DeprecatedAddFile({file2}, false /* copy file */);
ASSERT_TRUE(s.ok()) << s.ToString();
ASSERT_OK(env_->FileExists(file2));
// This file have overlapping values with the existing data
s = DeprecatedAddFile({file2}, true /* move file */);
ASSERT_FALSE(s.ok()) << s.ToString();
ASSERT_OK(env_->FileExists(file3));
for (int k = 0; k < 300; k++) {
ASSERT_EQ(Get(Key(k)), Key(k) + "_val");
}
}
TEST_F(ExternalSSTFileBasicTest, IngestFileWithGlobalSeqnoPickedSeqno) {
do {
Options options = CurrentOptions();
DestroyAndReopen(options);
std::map<std::string, std::string> true_data;
int file_id = 1;
ASSERT_OK(GenerateAndAddExternalFile(options, {1, 2, 3, 4, 5, 6}, file_id++,
&true_data));
// File dont overwrite any keys, No seqno needed
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 0);
ASSERT_OK(GenerateAndAddExternalFile(options, {10, 11, 12, 13}, file_id++,
&true_data));
// File dont overwrite any keys, No seqno needed
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 0);
ASSERT_OK(
GenerateAndAddExternalFile(options, {1, 4, 6}, file_id++, &true_data));
// File overwrite some keys, a seqno will be assigned
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 1);
ASSERT_OK(GenerateAndAddExternalFile(options, {11, 15, 19}, file_id++,
&true_data));
// File overwrite some keys, a seqno will be assigned
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 2);
ASSERT_OK(
GenerateAndAddExternalFile(options, {120, 130}, file_id++, &true_data));
// File dont overwrite any keys, No seqno needed
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 2);
ASSERT_OK(
GenerateAndAddExternalFile(options, {1, 130}, file_id++, &true_data));
// File overwrite some keys, a seqno will be assigned
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), 3);
// Write some keys through normal write path
for (int i = 0; i < 50; i++) {
ASSERT_OK(Put(Key(i), "memtable"));
true_data[Key(i)] = "memtable";
}
SequenceNumber last_seqno = dbfull()->GetLatestSequenceNumber();
ASSERT_OK(GenerateAndAddExternalFile(options, {60, 61, 62}, file_id++,
&true_data));
// File dont overwrite any keys, No seqno needed
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno);
ASSERT_OK(GenerateAndAddExternalFile(options, {40, 41, 42}, file_id++,
&true_data));
// File overwrite some keys, a seqno will be assigned
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 1);
ASSERT_OK(GenerateAndAddExternalFile(options, {20, 30, 40}, file_id++,
&true_data));
// File overwrite some keys, a seqno will be assigned
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 2);
const Snapshot* snapshot = db_->GetSnapshot();
// We will need a seqno for the file regardless if the file overwrite
// keys in the DB or not because we have a snapshot
ASSERT_OK(GenerateAndAddExternalFile(options, {1000, 1002}, file_id++,
&true_data));
// A global seqno will be assigned anyway because of the snapshot
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 3);
ASSERT_OK(GenerateAndAddExternalFile(options, {2000, 3002}, file_id++,
&true_data));
// A global seqno will be assigned anyway because of the snapshot
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 4);
ASSERT_OK(GenerateAndAddExternalFile(options, {1, 20, 40, 100, 150},
file_id++, &true_data));
// A global seqno will be assigned anyway because of the snapshot
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 5);
db_->ReleaseSnapshot(snapshot);
ASSERT_OK(GenerateAndAddExternalFile(options, {5000, 5001}, file_id++,
&true_data));
// No snapshot anymore, no need to assign a seqno
ASSERT_EQ(dbfull()->GetLatestSequenceNumber(), last_seqno + 5);
size_t kcnt = 0;
VerifyDBFromMap(true_data, &kcnt, false);
} while (ChangeCompactOptions());
}
TEST_F(ExternalSSTFileBasicTest, FadviseTrigger) {
Options options = CurrentOptions();
const int kNumKeys = 10000;
size_t total_fadvised_bytes = 0;
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"SstFileWriter::InvalidatePageCache", [&](void* arg) {
size_t fadvise_size = *(reinterpret_cast<size_t*>(arg));
total_fadvised_bytes += fadvise_size;
});
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
std::unique_ptr<SstFileWriter> sst_file_writer;
std::string sst_file_path = sst_files_dir_ + "file_fadvise_disable.sst";
sst_file_writer.reset(
new SstFileWriter(EnvOptions(), options, nullptr, false));
ASSERT_OK(sst_file_writer->Open(sst_file_path));
for (int i = 0; i < kNumKeys; i++) {
ASSERT_OK(sst_file_writer->Add(Key(i), Key(i)));
}
ASSERT_OK(sst_file_writer->Finish());
// fadvise disabled
ASSERT_EQ(total_fadvised_bytes, 0);
sst_file_path = sst_files_dir_ + "file_fadvise_enable.sst";
sst_file_writer.reset(
new SstFileWriter(EnvOptions(), options, nullptr, true));
ASSERT_OK(sst_file_writer->Open(sst_file_path));
for (int i = 0; i < kNumKeys; i++) {
ASSERT_OK(sst_file_writer->Add(Key(i), Key(i)));
}
ASSERT_OK(sst_file_writer->Finish());
// fadvise enabled
ASSERT_EQ(total_fadvised_bytes, sst_file_writer->FileSize());
ASSERT_GT(total_fadvised_bytes, 0);
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
}
#endif // ROCKSDB_LITE
} // namespace rocksdb
int main(int argc, char** argv) {
rocksdb::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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