051696bf98
Summary: Found from Debian's "Lintian" program Pull Request resolved: https://github.com/facebook/rocksdb/pull/6464 Differential Revision: D20162862 Pulled By: zhichao-cao fbshipit-source-id: 06941ee2437b038b2b8045becbe9d2c6fbff3e12
694 lines
25 KiB
C++
694 lines
25 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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#include <atomic>
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#include <cinttypes>
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#include <thread>
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#include <vector>
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#include "file/delete_scheduler.h"
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#include "file/sst_file_manager_impl.h"
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#include "rocksdb/env.h"
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#include "rocksdb/options.h"
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#include "test_util/sync_point.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/string_util.h"
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#ifndef ROCKSDB_LITE
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namespace ROCKSDB_NAMESPACE {
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class DeleteSchedulerTest : public testing::Test {
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public:
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DeleteSchedulerTest() : env_(Env::Default()) {
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const int kNumDataDirs = 3;
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dummy_files_dirs_.reserve(kNumDataDirs);
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for (size_t i = 0; i < kNumDataDirs; ++i) {
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dummy_files_dirs_.emplace_back(
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test::PerThreadDBPath(env_, "delete_scheduler_dummy_data_dir") +
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ToString(i));
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DestroyAndCreateDir(dummy_files_dirs_.back());
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}
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}
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~DeleteSchedulerTest() override {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
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for (const auto& dummy_files_dir : dummy_files_dirs_) {
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test::DestroyDir(env_, dummy_files_dir);
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}
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}
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void DestroyAndCreateDir(const std::string& dir) {
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ASSERT_OK(test::DestroyDir(env_, dir));
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EXPECT_OK(env_->CreateDir(dir));
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}
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int CountNormalFiles(size_t dummy_files_dirs_idx = 0) {
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std::vector<std::string> files_in_dir;
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EXPECT_OK(env_->GetChildren(dummy_files_dirs_[dummy_files_dirs_idx],
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&files_in_dir));
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int normal_cnt = 0;
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for (auto& f : files_in_dir) {
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if (!DeleteScheduler::IsTrashFile(f) && f != "." && f != "..") {
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normal_cnt++;
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}
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}
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return normal_cnt;
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}
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int CountTrashFiles(size_t dummy_files_dirs_idx = 0) {
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std::vector<std::string> files_in_dir;
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EXPECT_OK(env_->GetChildren(dummy_files_dirs_[dummy_files_dirs_idx],
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&files_in_dir));
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int trash_cnt = 0;
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for (auto& f : files_in_dir) {
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if (DeleteScheduler::IsTrashFile(f)) {
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trash_cnt++;
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}
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}
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return trash_cnt;
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}
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std::string NewDummyFile(const std::string& file_name, uint64_t size = 1024,
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size_t dummy_files_dirs_idx = 0) {
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std::string file_path =
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dummy_files_dirs_[dummy_files_dirs_idx] + "/" + file_name;
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std::unique_ptr<WritableFile> f;
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env_->NewWritableFile(file_path, &f, EnvOptions());
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std::string data(size, 'A');
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EXPECT_OK(f->Append(data));
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EXPECT_OK(f->Close());
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sst_file_mgr_->OnAddFile(file_path, false);
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return file_path;
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}
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void NewDeleteScheduler() {
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// Tests in this file are for DeleteScheduler component and don't create any
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// DBs, so we need to set max_trash_db_ratio to 100% (instead of default
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// 25%)
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std::shared_ptr<FileSystem>
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fs(std::make_shared<LegacyFileSystemWrapper>(env_));
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sst_file_mgr_.reset(
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new SstFileManagerImpl(env_, fs, nullptr, rate_bytes_per_sec_,
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/* max_trash_db_ratio= */ 1.1, 128 * 1024));
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delete_scheduler_ = sst_file_mgr_->delete_scheduler();
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}
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Env* env_;
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std::vector<std::string> dummy_files_dirs_;
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int64_t rate_bytes_per_sec_;
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DeleteScheduler* delete_scheduler_;
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std::unique_ptr<SstFileManagerImpl> sst_file_mgr_;
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};
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// Test the basic functionality of DeleteScheduler (Rate Limiting).
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// 1- Create 100 dummy files
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// 2- Delete the 100 dummy files using DeleteScheduler
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// --- Hold DeleteScheduler::BackgroundEmptyTrash ---
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// 3- Wait for DeleteScheduler to delete all files in trash
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// 4- Verify that BackgroundEmptyTrash used to correct penlties for the files
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// 5- Make sure that all created files were completely deleted
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TEST_F(DeleteSchedulerTest, BasicRateLimiting) {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"DeleteSchedulerTest::BasicRateLimiting:1",
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"DeleteScheduler::BackgroundEmptyTrash"},
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});
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std::vector<uint64_t> penalties;
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"DeleteScheduler::BackgroundEmptyTrash:Wait",
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[&](void* arg) { penalties.push_back(*(static_cast<uint64_t*>(arg))); });
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int dir_synced = 0;
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"DeleteScheduler::DeleteTrashFile::AfterSyncDir", [&](void* arg) {
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dir_synced++;
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std::string* dir = reinterpret_cast<std::string*>(arg);
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EXPECT_EQ(dummy_files_dirs_[0], *dir);
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});
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int num_files = 100; // 100 files
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uint64_t file_size = 1024; // every file is 1 kb
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std::vector<uint64_t> delete_kbs_per_sec = {512, 200, 100, 50, 25};
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for (size_t t = 0; t < delete_kbs_per_sec.size(); t++) {
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penalties.clear();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearTrace();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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DestroyAndCreateDir(dummy_files_dirs_[0]);
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rate_bytes_per_sec_ = delete_kbs_per_sec[t] * 1024;
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NewDeleteScheduler();
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dir_synced = 0;
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// Create 100 dummy files, every file is 1 Kb
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std::vector<std::string> generated_files;
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for (int i = 0; i < num_files; i++) {
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std::string file_name = "file" + ToString(i) + ".data";
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generated_files.push_back(NewDummyFile(file_name, file_size));
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}
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// Delete dummy files and measure time spent to empty trash
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for (int i = 0; i < num_files; i++) {
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ASSERT_OK(delete_scheduler_->DeleteFile(generated_files[i],
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dummy_files_dirs_[0]));
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}
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ASSERT_EQ(CountNormalFiles(), 0);
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uint64_t delete_start_time = env_->NowMicros();
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TEST_SYNC_POINT("DeleteSchedulerTest::BasicRateLimiting:1");
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delete_scheduler_->WaitForEmptyTrash();
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uint64_t time_spent_deleting = env_->NowMicros() - delete_start_time;
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auto bg_errors = delete_scheduler_->GetBackgroundErrors();
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ASSERT_EQ(bg_errors.size(), 0);
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uint64_t total_files_size = 0;
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uint64_t expected_penlty = 0;
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ASSERT_EQ(penalties.size(), num_files);
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for (int i = 0; i < num_files; i++) {
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total_files_size += file_size;
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expected_penlty = ((total_files_size * 1000000) / rate_bytes_per_sec_);
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ASSERT_EQ(expected_penlty, penalties[i]);
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}
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ASSERT_GT(time_spent_deleting, expected_penlty * 0.9);
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ASSERT_EQ(num_files, dir_synced);
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ASSERT_EQ(CountTrashFiles(), 0);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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}
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TEST_F(DeleteSchedulerTest, MultiDirectoryDeletionsScheduled) {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"DeleteSchedulerTest::MultiDbPathDeletionsScheduled:1",
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"DeleteScheduler::BackgroundEmptyTrash"},
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});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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rate_bytes_per_sec_ = 1 << 20; // 1MB
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NewDeleteScheduler();
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// Generate dummy files in multiple directories
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const size_t kNumFiles = dummy_files_dirs_.size();
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const size_t kFileSize = 1 << 10; // 1KB
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std::vector<std::string> generated_files;
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for (size_t i = 0; i < kNumFiles; i++) {
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generated_files.push_back(NewDummyFile("file", kFileSize, i));
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ASSERT_EQ(1, CountNormalFiles(i));
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}
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// Mark dummy files as trash
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for (size_t i = 0; i < kNumFiles; i++) {
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ASSERT_OK(delete_scheduler_->DeleteFile(generated_files[i], ""));
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ASSERT_EQ(0, CountNormalFiles(i));
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ASSERT_EQ(1, CountTrashFiles(i));
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}
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TEST_SYNC_POINT("DeleteSchedulerTest::MultiDbPathDeletionsScheduled:1");
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delete_scheduler_->WaitForEmptyTrash();
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// Verify dummy files eventually got deleted
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for (size_t i = 0; i < kNumFiles; i++) {
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ASSERT_EQ(0, CountNormalFiles(i));
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ASSERT_EQ(0, CountTrashFiles(i));
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}
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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// Same as the BasicRateLimiting test but delete files in multiple threads.
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// 1- Create 100 dummy files
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// 2- Delete the 100 dummy files using DeleteScheduler using 10 threads
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// --- Hold DeleteScheduler::BackgroundEmptyTrash ---
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// 3- Wait for DeleteScheduler to delete all files in queue
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// 4- Verify that BackgroundEmptyTrash used to correct penlties for the files
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// 5- Make sure that all created files were completely deleted
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TEST_F(DeleteSchedulerTest, RateLimitingMultiThreaded) {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"DeleteSchedulerTest::RateLimitingMultiThreaded:1",
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"DeleteScheduler::BackgroundEmptyTrash"},
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});
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std::vector<uint64_t> penalties;
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"DeleteScheduler::BackgroundEmptyTrash:Wait",
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[&](void* arg) { penalties.push_back(*(static_cast<uint64_t*>(arg))); });
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int thread_cnt = 10;
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int num_files = 10; // 10 files per thread
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uint64_t file_size = 1024; // every file is 1 kb
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std::vector<uint64_t> delete_kbs_per_sec = {512, 200, 100, 50, 25};
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for (size_t t = 0; t < delete_kbs_per_sec.size(); t++) {
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penalties.clear();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearTrace();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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DestroyAndCreateDir(dummy_files_dirs_[0]);
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rate_bytes_per_sec_ = delete_kbs_per_sec[t] * 1024;
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NewDeleteScheduler();
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// Create 100 dummy files, every file is 1 Kb
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std::vector<std::string> generated_files;
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for (int i = 0; i < num_files * thread_cnt; i++) {
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std::string file_name = "file" + ToString(i) + ".data";
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generated_files.push_back(NewDummyFile(file_name, file_size));
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}
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// Delete dummy files using 10 threads and measure time spent to empty trash
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std::atomic<int> thread_num(0);
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std::vector<port::Thread> threads;
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std::function<void()> delete_thread = [&]() {
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int idx = thread_num.fetch_add(1);
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int range_start = idx * num_files;
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int range_end = range_start + num_files;
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for (int j = range_start; j < range_end; j++) {
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ASSERT_OK(delete_scheduler_->DeleteFile(generated_files[j], ""));
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}
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};
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for (int i = 0; i < thread_cnt; i++) {
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threads.emplace_back(delete_thread);
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}
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for (size_t i = 0; i < threads.size(); i++) {
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threads[i].join();
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}
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uint64_t delete_start_time = env_->NowMicros();
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TEST_SYNC_POINT("DeleteSchedulerTest::RateLimitingMultiThreaded:1");
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delete_scheduler_->WaitForEmptyTrash();
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uint64_t time_spent_deleting = env_->NowMicros() - delete_start_time;
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auto bg_errors = delete_scheduler_->GetBackgroundErrors();
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ASSERT_EQ(bg_errors.size(), 0);
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uint64_t total_files_size = 0;
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uint64_t expected_penlty = 0;
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ASSERT_EQ(penalties.size(), num_files * thread_cnt);
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for (int i = 0; i < num_files * thread_cnt; i++) {
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total_files_size += file_size;
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expected_penlty = ((total_files_size * 1000000) / rate_bytes_per_sec_);
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ASSERT_EQ(expected_penlty, penalties[i]);
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}
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ASSERT_GT(time_spent_deleting, expected_penlty * 0.9);
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ASSERT_EQ(CountNormalFiles(), 0);
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ASSERT_EQ(CountTrashFiles(), 0);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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}
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// Disable rate limiting by setting rate_bytes_per_sec_ to 0 and make sure
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// that when DeleteScheduler delete a file it delete it immediately and don't
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// move it to trash
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TEST_F(DeleteSchedulerTest, DisableRateLimiting) {
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int bg_delete_file = 0;
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"DeleteScheduler::DeleteTrashFile:DeleteFile",
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[&](void* /*arg*/) { bg_delete_file++; });
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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rate_bytes_per_sec_ = 0;
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NewDeleteScheduler();
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for (int i = 0; i < 10; i++) {
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// Every file we delete will be deleted immediately
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std::string dummy_file = NewDummyFile("dummy.data");
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ASSERT_OK(delete_scheduler_->DeleteFile(dummy_file, ""));
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ASSERT_TRUE(env_->FileExists(dummy_file).IsNotFound());
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ASSERT_EQ(CountNormalFiles(), 0);
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ASSERT_EQ(CountTrashFiles(), 0);
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}
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ASSERT_EQ(bg_delete_file, 0);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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// Testing that moving files to trash with the same name is not a problem
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// 1- Create 10 files with the same name "conflict.data"
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// 2- Delete the 10 files using DeleteScheduler
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// 3- Make sure that trash directory contain 10 files ("conflict.data" x 10)
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// --- Hold DeleteScheduler::BackgroundEmptyTrash ---
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// 4- Make sure that files are deleted from trash
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TEST_F(DeleteSchedulerTest, ConflictNames) {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"DeleteSchedulerTest::ConflictNames:1",
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"DeleteScheduler::BackgroundEmptyTrash"},
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});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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rate_bytes_per_sec_ = 1024 * 1024; // 1 Mb/sec
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NewDeleteScheduler();
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// Create "conflict.data" and move it to trash 10 times
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for (int i = 0; i < 10; i++) {
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std::string dummy_file = NewDummyFile("conflict.data");
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ASSERT_OK(delete_scheduler_->DeleteFile(dummy_file, ""));
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}
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ASSERT_EQ(CountNormalFiles(), 0);
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// 10 files ("conflict.data" x 10) in trash
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ASSERT_EQ(CountTrashFiles(), 10);
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// Hold BackgroundEmptyTrash
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TEST_SYNC_POINT("DeleteSchedulerTest::ConflictNames:1");
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delete_scheduler_->WaitForEmptyTrash();
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ASSERT_EQ(CountTrashFiles(), 0);
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auto bg_errors = delete_scheduler_->GetBackgroundErrors();
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ASSERT_EQ(bg_errors.size(), 0);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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// 1- Create 10 dummy files
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// 2- Delete the 10 files using DeleteScheduler (move them to trsah)
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// 3- Delete the 10 files directly (using env_->DeleteFile)
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// --- Hold DeleteScheduler::BackgroundEmptyTrash ---
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// 4- Make sure that DeleteScheduler failed to delete the 10 files and
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// reported 10 background errors
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TEST_F(DeleteSchedulerTest, BackgroundError) {
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"DeleteSchedulerTest::BackgroundError:1",
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"DeleteScheduler::BackgroundEmptyTrash"},
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});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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rate_bytes_per_sec_ = 1024 * 1024; // 1 Mb/sec
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NewDeleteScheduler();
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// Generate 10 dummy files and move them to trash
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for (int i = 0; i < 10; i++) {
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std::string file_name = "data_" + ToString(i) + ".data";
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ASSERT_OK(delete_scheduler_->DeleteFile(NewDummyFile(file_name), ""));
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}
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ASSERT_EQ(CountNormalFiles(), 0);
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ASSERT_EQ(CountTrashFiles(), 10);
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// Delete 10 files from trash, this will cause background errors in
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// BackgroundEmptyTrash since we already deleted the files it was
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// goind to delete
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for (int i = 0; i < 10; i++) {
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std::string file_name = "data_" + ToString(i) + ".data.trash";
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ASSERT_OK(env_->DeleteFile(dummy_files_dirs_[0] + "/" + file_name));
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}
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// Hold BackgroundEmptyTrash
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TEST_SYNC_POINT("DeleteSchedulerTest::BackgroundError:1");
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delete_scheduler_->WaitForEmptyTrash();
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auto bg_errors = delete_scheduler_->GetBackgroundErrors();
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ASSERT_EQ(bg_errors.size(), 10);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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// 1- Create 10 dummy files
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// 2- Delete 10 dummy files using DeleteScheduler
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// 3- Wait for DeleteScheduler to delete all files in queue
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// 4- Make sure all files in trash directory were deleted
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// 5- Repeat previous steps 5 times
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TEST_F(DeleteSchedulerTest, StartBGEmptyTrashMultipleTimes) {
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int bg_delete_file = 0;
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"DeleteScheduler::DeleteTrashFile:DeleteFile",
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[&](void* /*arg*/) { bg_delete_file++; });
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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rate_bytes_per_sec_ = 1024 * 1024; // 1 MB / sec
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NewDeleteScheduler();
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// Move files to trash, wait for empty trash, start again
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for (int run = 1; run <= 5; run++) {
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// Generate 10 dummy files and move them to trash
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for (int i = 0; i < 10; i++) {
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std::string file_name = "data_" + ToString(i) + ".data";
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ASSERT_OK(delete_scheduler_->DeleteFile(NewDummyFile(file_name), ""));
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}
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ASSERT_EQ(CountNormalFiles(), 0);
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delete_scheduler_->WaitForEmptyTrash();
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ASSERT_EQ(bg_delete_file, 10 * run);
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ASSERT_EQ(CountTrashFiles(), 0);
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auto bg_errors = delete_scheduler_->GetBackgroundErrors();
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ASSERT_EQ(bg_errors.size(), 0);
|
|
}
|
|
|
|
ASSERT_EQ(bg_delete_file, 50);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
}
|
|
|
|
TEST_F(DeleteSchedulerTest, DeletePartialFile) {
|
|
int bg_delete_file = 0;
|
|
int bg_fsync = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:DeleteFile",
|
|
[&](void*) { bg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:Fsync", [&](void*) { bg_fsync++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
rate_bytes_per_sec_ = 1024 * 1024; // 1 MB / sec
|
|
NewDeleteScheduler();
|
|
|
|
// Should delete in 4 batch
|
|
ASSERT_OK(
|
|
delete_scheduler_->DeleteFile(NewDummyFile("data_1", 500 * 1024), ""));
|
|
ASSERT_OK(
|
|
delete_scheduler_->DeleteFile(NewDummyFile("data_2", 100 * 1024), ""));
|
|
// Should delete in 2 batch
|
|
ASSERT_OK(
|
|
delete_scheduler_->DeleteFile(NewDummyFile("data_2", 200 * 1024), ""));
|
|
|
|
delete_scheduler_->WaitForEmptyTrash();
|
|
|
|
auto bg_errors = delete_scheduler_->GetBackgroundErrors();
|
|
ASSERT_EQ(bg_errors.size(), 0);
|
|
ASSERT_EQ(7, bg_delete_file);
|
|
ASSERT_EQ(4, bg_fsync);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
}
|
|
|
|
#ifdef OS_LINUX
|
|
TEST_F(DeleteSchedulerTest, NoPartialDeleteWithLink) {
|
|
int bg_delete_file = 0;
|
|
int bg_fsync = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:DeleteFile",
|
|
[&](void*) { bg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:Fsync", [&](void*) { bg_fsync++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
rate_bytes_per_sec_ = 1024 * 1024; // 1 MB / sec
|
|
NewDeleteScheduler();
|
|
|
|
std::string file1 = NewDummyFile("data_1", 500 * 1024);
|
|
std::string file2 = NewDummyFile("data_2", 100 * 1024);
|
|
|
|
ASSERT_OK(env_->LinkFile(file1, dummy_files_dirs_[0] + "/data_1b"));
|
|
ASSERT_OK(env_->LinkFile(file2, dummy_files_dirs_[0] + "/data_2b"));
|
|
|
|
// Should delete in 4 batch if there is no hardlink
|
|
ASSERT_OK(delete_scheduler_->DeleteFile(file1, ""));
|
|
ASSERT_OK(delete_scheduler_->DeleteFile(file2, ""));
|
|
|
|
delete_scheduler_->WaitForEmptyTrash();
|
|
|
|
auto bg_errors = delete_scheduler_->GetBackgroundErrors();
|
|
ASSERT_EQ(bg_errors.size(), 0);
|
|
ASSERT_EQ(2, bg_delete_file);
|
|
ASSERT_EQ(0, bg_fsync);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
}
|
|
#endif
|
|
|
|
// 1- Create a DeleteScheduler with very slow rate limit (1 Byte / sec)
|
|
// 2- Delete 100 files using DeleteScheduler
|
|
// 3- Delete the DeleteScheduler (call the destructor while queue is not empty)
|
|
// 4- Make sure that not all files were deleted from trash and that
|
|
// DeleteScheduler background thread did not delete all files
|
|
TEST_F(DeleteSchedulerTest, DestructorWithNonEmptyQueue) {
|
|
int bg_delete_file = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:DeleteFile",
|
|
[&](void* /*arg*/) { bg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
rate_bytes_per_sec_ = 1; // 1 Byte / sec
|
|
NewDeleteScheduler();
|
|
|
|
for (int i = 0; i < 100; i++) {
|
|
std::string file_name = "data_" + ToString(i) + ".data";
|
|
ASSERT_OK(delete_scheduler_->DeleteFile(NewDummyFile(file_name), ""));
|
|
}
|
|
|
|
// Deleting 100 files will need >28 hours to delete
|
|
// we will delete the DeleteScheduler while delete queue is not empty
|
|
sst_file_mgr_.reset();
|
|
|
|
ASSERT_LT(bg_delete_file, 100);
|
|
ASSERT_GT(CountTrashFiles(), 0);
|
|
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
|
|
TEST_F(DeleteSchedulerTest, DISABLED_DynamicRateLimiting1) {
|
|
std::vector<uint64_t> penalties;
|
|
int bg_delete_file = 0;
|
|
int fg_delete_file = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:DeleteFile",
|
|
[&](void* /*arg*/) { bg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteFile", [&](void* /*arg*/) { fg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::BackgroundEmptyTrash:Wait",
|
|
[&](void* arg) { penalties.push_back(*(static_cast<int*>(arg))); });
|
|
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
|
|
{"DeleteSchedulerTest::DynamicRateLimiting1:1",
|
|
"DeleteScheduler::BackgroundEmptyTrash"},
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
rate_bytes_per_sec_ = 0; // Disable rate limiting initially
|
|
NewDeleteScheduler();
|
|
|
|
|
|
int num_files = 10; // 10 files
|
|
uint64_t file_size = 1024; // every file is 1 kb
|
|
|
|
std::vector<int64_t> delete_kbs_per_sec = {512, 200, 0, 100, 50, -2, 25};
|
|
for (size_t t = 0; t < delete_kbs_per_sec.size(); t++) {
|
|
penalties.clear();
|
|
bg_delete_file = 0;
|
|
fg_delete_file = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearTrace();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
DestroyAndCreateDir(dummy_files_dirs_[0]);
|
|
rate_bytes_per_sec_ = delete_kbs_per_sec[t] * 1024;
|
|
delete_scheduler_->SetRateBytesPerSecond(rate_bytes_per_sec_);
|
|
|
|
// Create 100 dummy files, every file is 1 Kb
|
|
std::vector<std::string> generated_files;
|
|
for (int i = 0; i < num_files; i++) {
|
|
std::string file_name = "file" + ToString(i) + ".data";
|
|
generated_files.push_back(NewDummyFile(file_name, file_size));
|
|
}
|
|
|
|
// Delete dummy files and measure time spent to empty trash
|
|
for (int i = 0; i < num_files; i++) {
|
|
ASSERT_OK(delete_scheduler_->DeleteFile(generated_files[i], ""));
|
|
}
|
|
ASSERT_EQ(CountNormalFiles(), 0);
|
|
|
|
if (rate_bytes_per_sec_ > 0) {
|
|
uint64_t delete_start_time = env_->NowMicros();
|
|
TEST_SYNC_POINT("DeleteSchedulerTest::DynamicRateLimiting1:1");
|
|
delete_scheduler_->WaitForEmptyTrash();
|
|
uint64_t time_spent_deleting = env_->NowMicros() - delete_start_time;
|
|
|
|
auto bg_errors = delete_scheduler_->GetBackgroundErrors();
|
|
ASSERT_EQ(bg_errors.size(), 0);
|
|
|
|
uint64_t total_files_size = 0;
|
|
uint64_t expected_penlty = 0;
|
|
ASSERT_EQ(penalties.size(), num_files);
|
|
for (int i = 0; i < num_files; i++) {
|
|
total_files_size += file_size;
|
|
expected_penlty = ((total_files_size * 1000000) / rate_bytes_per_sec_);
|
|
ASSERT_EQ(expected_penlty, penalties[i]);
|
|
}
|
|
ASSERT_GT(time_spent_deleting, expected_penlty * 0.9);
|
|
ASSERT_EQ(bg_delete_file, num_files);
|
|
ASSERT_EQ(fg_delete_file, 0);
|
|
} else {
|
|
ASSERT_EQ(penalties.size(), 0);
|
|
ASSERT_EQ(bg_delete_file, 0);
|
|
ASSERT_EQ(fg_delete_file, num_files);
|
|
}
|
|
|
|
ASSERT_EQ(CountTrashFiles(), 0);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
}
|
|
|
|
TEST_F(DeleteSchedulerTest, ImmediateDeleteOn25PercDBSize) {
|
|
int bg_delete_file = 0;
|
|
int fg_delete_file = 0;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteTrashFile:DeleteFile",
|
|
[&](void* /*arg*/) { bg_delete_file++; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DeleteScheduler::DeleteFile", [&](void* /*arg*/) { fg_delete_file++; });
|
|
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
int num_files = 100; // 100 files
|
|
uint64_t file_size = 1024 * 10; // 100 KB as a file size
|
|
rate_bytes_per_sec_ = 1; // 1 byte per sec (very slow trash delete)
|
|
|
|
NewDeleteScheduler();
|
|
delete_scheduler_->SetMaxTrashDBRatio(0.25);
|
|
|
|
std::vector<std::string> generated_files;
|
|
for (int i = 0; i < num_files; i++) {
|
|
std::string file_name = "file" + ToString(i) + ".data";
|
|
generated_files.push_back(NewDummyFile(file_name, file_size));
|
|
}
|
|
|
|
for (std::string& file_name : generated_files) {
|
|
delete_scheduler_->DeleteFile(file_name, "");
|
|
}
|
|
|
|
// When we end up with 26 files in trash we will start
|
|
// deleting new files immediately
|
|
ASSERT_EQ(fg_delete_file, 74);
|
|
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
|
|
TEST_F(DeleteSchedulerTest, IsTrashCheck) {
|
|
// Trash files
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("x.trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile(".trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("abc.sst.trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("/a/b/c/abc..sst.trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("log.trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("^^^^^.log.trash"));
|
|
ASSERT_TRUE(DeleteScheduler::IsTrashFile("abc.t.trash"));
|
|
|
|
// Not trash files
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("abc.sst"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("abc.txt"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("/a/b/c/abc.sst"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("/a/b/c/abc.sstrash"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("^^^^^.trashh"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("abc.ttrash"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile(".ttrash"));
|
|
ASSERT_FALSE(DeleteScheduler::IsTrashFile("abc.trashx"));
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|
|
|
|
#else
|
|
int main(int /*argc*/, char** /*argv*/) {
|
|
printf("DeleteScheduler is not supported in ROCKSDB_LITE\n");
|
|
return 0;
|
|
}
|
|
#endif // ROCKSDB_LITE
|