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rocksdb/db/version_edit.cc
Levi Tamasi b0e7834100 Integrate blob file writing with the flush logic (#7345) 
Summary:
The patch adds support for writing blob files during flush by integrating
`BlobFileBuilder` with the flush logic, most importantly, `BuildTable` and
`CompactionIterator`. If `enable_blob_files` is set, large values are extracted
to blob files and replaced with references. The resulting blob files are then
logged to the MANIFEST as part of the flush job's `VersionEdit` and
added to the `Version`, similarly to table files. Errors related to writing
blob files fail the flush, and any blob files written by such jobs are immediately
deleted (again, similarly to how SST files are handled). In addition, the patch
extends the logging and statistics around flushes to account for the presence
of blob files (e.g. `InternalStats::CompactionStats::bytes_written`, which is
used for calculating write amplification, now considers the blob files as well).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7345

Test Plan: Tested using `make check` and `db_bench`.

Reviewed By: riversand963

Differential Revision: D23506369

Pulled By: ltamasi

fbshipit-source-id: 646885f22dfbe063f650d38a1fedc132f499a159
2020-09-14 21:11:43 -07:00

889 lines
25 KiB
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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.
#include "db/version_edit.h"
#include "db/blob/blob_index.h"
#include "db/version_set.h"
#include "logging/event_logger.h"
#include "rocksdb/slice.h"
#include "test_util/sync_point.h"
#include "util/coding.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
namespace {
} // anonymous namespace
uint64_t PackFileNumberAndPathId(uint64_t number, uint64_t path_id) {
assert(number <= kFileNumberMask);
return number | (path_id * (kFileNumberMask + 1));
}
void FileMetaData::UpdateBoundaries(const Slice& key, const Slice& value,
SequenceNumber seqno,
ValueType value_type) {
if (smallest.size() == 0) {
smallest.DecodeFrom(key);
}
largest.DecodeFrom(key);
fd.smallest_seqno = std::min(fd.smallest_seqno, seqno);
fd.largest_seqno = std::max(fd.largest_seqno, seqno);
if (value_type == kTypeBlobIndex) {
BlobIndex blob_index;
const Status s = blob_index.DecodeFrom(value);
if (!s.ok()) {
return;
}
if (blob_index.IsInlined()) {
return;
}
if (blob_index.HasTTL()) {
return;
}
// Paranoid check: this should not happen because BlobDB numbers the blob
// files starting from 1.
if (blob_index.file_number() == kInvalidBlobFileNumber) {
return;
}
if (oldest_blob_file_number == kInvalidBlobFileNumber ||
oldest_blob_file_number > blob_index.file_number()) {
oldest_blob_file_number = blob_index.file_number();
}
}
}
void VersionEdit::Clear() {
max_level_ = 0;
db_id_.clear();
comparator_.clear();
log_number_ = 0;
prev_log_number_ = 0;
next_file_number_ = 0;
max_column_family_ = 0;
min_log_number_to_keep_ = 0;
last_sequence_ = 0;
has_db_id_ = false;
has_comparator_ = false;
has_log_number_ = false;
has_prev_log_number_ = false;
has_next_file_number_ = false;
has_max_column_family_ = false;
has_min_log_number_to_keep_ = false;
has_last_sequence_ = false;
deleted_files_.clear();
new_files_.clear();
blob_file_additions_.clear();
blob_file_garbages_.clear();
wal_additions_.clear();
wal_deletions_.clear();
column_family_ = 0;
is_column_family_add_ = false;
is_column_family_drop_ = false;
column_family_name_.clear();
is_in_atomic_group_ = false;
remaining_entries_ = 0;
}
bool VersionEdit::EncodeTo(std::string* dst) const {
if (has_db_id_) {
PutVarint32(dst, kDbId);
PutLengthPrefixedSlice(dst, db_id_);
}
if (has_comparator_) {
PutVarint32(dst, kComparator);
PutLengthPrefixedSlice(dst, comparator_);
}
if (has_log_number_) {
PutVarint32Varint64(dst, kLogNumber, log_number_);
}
if (has_prev_log_number_) {
PutVarint32Varint64(dst, kPrevLogNumber, prev_log_number_);
}
if (has_next_file_number_) {
PutVarint32Varint64(dst, kNextFileNumber, next_file_number_);
}
if (has_max_column_family_) {
PutVarint32Varint32(dst, kMaxColumnFamily, max_column_family_);
}
if (has_last_sequence_) {
PutVarint32Varint64(dst, kLastSequence, last_sequence_);
}
for (const auto& deleted : deleted_files_) {
PutVarint32Varint32Varint64(dst, kDeletedFile, deleted.first /* level */,
deleted.second /* file number */);
}
bool min_log_num_written = false;
for (size_t i = 0; i < new_files_.size(); i++) {
const FileMetaData& f = new_files_[i].second;
if (!f.smallest.Valid() || !f.largest.Valid()) {
return false;
}
PutVarint32(dst, kNewFile4);
PutVarint32Varint64(dst, new_files_[i].first /* level */, f.fd.GetNumber());
PutVarint64(dst, f.fd.GetFileSize());
PutLengthPrefixedSlice(dst, f.smallest.Encode());
PutLengthPrefixedSlice(dst, f.largest.Encode());
PutVarint64Varint64(dst, f.fd.smallest_seqno, f.fd.largest_seqno);
// Customized fields' format:
// +-----------------------------+
// | 1st field's tag (varint32) |
// +-----------------------------+
// | 1st field's size (varint32) |
// +-----------------------------+
// | bytes for 1st field |
// | (based on size decoded) |
// +-----------------------------+
// | |
// | ...... |
// | |
// +-----------------------------+
// | last field's size (varint32)|
// +-----------------------------+
// | bytes for last field |
// | (based on size decoded) |
// +-----------------------------+
// | terminating tag (varint32) |
// +-----------------------------+
//
// Customized encoding for fields:
// tag kPathId: 1 byte as path_id
// tag kNeedCompaction:
// now only can take one char value 1 indicating need-compaction
//
PutVarint32(dst, NewFileCustomTag::kOldestAncesterTime);
std::string varint_oldest_ancester_time;
PutVarint64(&varint_oldest_ancester_time, f.oldest_ancester_time);
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:VarintOldestAncesterTime",
&varint_oldest_ancester_time);
PutLengthPrefixedSlice(dst, Slice(varint_oldest_ancester_time));
PutVarint32(dst, NewFileCustomTag::kFileCreationTime);
std::string varint_file_creation_time;
PutVarint64(&varint_file_creation_time, f.file_creation_time);
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:VarintFileCreationTime",
&varint_file_creation_time);
PutLengthPrefixedSlice(dst, Slice(varint_file_creation_time));
PutVarint32(dst, NewFileCustomTag::kFileChecksum);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum));
PutVarint32(dst, NewFileCustomTag::kFileChecksumFuncName);
PutLengthPrefixedSlice(dst, Slice(f.file_checksum_func_name));
if (f.fd.GetPathId() != 0) {
PutVarint32(dst, NewFileCustomTag::kPathId);
char p = static_cast<char>(f.fd.GetPathId());
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
if (f.marked_for_compaction) {
PutVarint32(dst, NewFileCustomTag::kNeedCompaction);
char p = static_cast<char>(1);
PutLengthPrefixedSlice(dst, Slice(&p, 1));
}
if (has_min_log_number_to_keep_ && !min_log_num_written) {
PutVarint32(dst, NewFileCustomTag::kMinLogNumberToKeepHack);
std::string varint_log_number;
PutFixed64(&varint_log_number, min_log_number_to_keep_);
PutLengthPrefixedSlice(dst, Slice(varint_log_number));
min_log_num_written = true;
}
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
PutVarint32(dst, NewFileCustomTag::kOldestBlobFileNumber);
std::string oldest_blob_file_number;
PutVarint64(&oldest_blob_file_number, f.oldest_blob_file_number);
PutLengthPrefixedSlice(dst, Slice(oldest_blob_file_number));
}
TEST_SYNC_POINT_CALLBACK("VersionEdit::EncodeTo:NewFile4:CustomizeFields",
dst);
PutVarint32(dst, NewFileCustomTag::kTerminate);
}
for (const auto& blob_file_addition : blob_file_additions_) {
PutVarint32(dst, kBlobFileAddition);
blob_file_addition.EncodeTo(dst);
}
for (const auto& blob_file_garbage : blob_file_garbages_) {
PutVarint32(dst, kBlobFileGarbage);
blob_file_garbage.EncodeTo(dst);
}
for (const auto& wal_addition : wal_additions_) {
PutVarint32(dst, kWalAddition);
wal_addition.EncodeTo(dst);
}
for (const auto& wal_deletion : wal_deletions_) {
PutVarint32(dst, kWalDeletion);
wal_deletion.EncodeTo(dst);
}
// 0 is default and does not need to be explicitly written
if (column_family_ != 0) {
PutVarint32Varint32(dst, kColumnFamily, column_family_);
}
if (is_column_family_add_) {
PutVarint32(dst, kColumnFamilyAdd);
PutLengthPrefixedSlice(dst, Slice(column_family_name_));
}
if (is_column_family_drop_) {
PutVarint32(dst, kColumnFamilyDrop);
}
if (is_in_atomic_group_) {
PutVarint32(dst, kInAtomicGroup);
PutVarint32(dst, remaining_entries_);
}
return true;
}
static bool GetInternalKey(Slice* input, InternalKey* dst) {
Slice str;
if (GetLengthPrefixedSlice(input, &str)) {
dst->DecodeFrom(str);
return dst->Valid();
} else {
return false;
}
}
bool VersionEdit::GetLevel(Slice* input, int* level, const char** /*msg*/) {
uint32_t v = 0;
if (GetVarint32(input, &v)) {
*level = v;
if (max_level_ < *level) {
max_level_ = *level;
}
return true;
} else {
return false;
}
}
const char* VersionEdit::DecodeNewFile4From(Slice* input) {
const char* msg = nullptr;
int level = 0;
FileMetaData f;
uint64_t number = 0;
uint32_t path_id = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(input, &level, &msg) && GetVarint64(input, &number) &&
GetVarint64(input, &file_size) && GetInternalKey(input, &f.smallest) &&
GetInternalKey(input, &f.largest) &&
GetVarint64(input, &smallest_seqno) &&
GetVarint64(input, &largest_seqno)) {
// See comments in VersionEdit::EncodeTo() for format of customized fields
while (true) {
uint32_t custom_tag = 0;
Slice field;
if (!GetVarint32(input, &custom_tag)) {
return "new-file4 custom field";
}
if (custom_tag == kTerminate) {
break;
}
if (!GetLengthPrefixedSlice(input, &field)) {
return "new-file4 custom field length prefixed slice error";
}
switch (custom_tag) {
case kPathId:
if (field.size() != 1) {
return "path_id field wrong size";
}
path_id = field[0];
if (path_id > 3) {
return "path_id wrong vaue";
}
break;
case kOldestAncesterTime:
if (!GetVarint64(&field, &f.oldest_ancester_time)) {
return "invalid oldest ancester time";
}
break;
case kFileCreationTime:
if (!GetVarint64(&field, &f.file_creation_time)) {
return "invalid file creation time";
}
break;
case kFileChecksum:
f.file_checksum = field.ToString();
break;
case kFileChecksumFuncName:
f.file_checksum_func_name = field.ToString();
break;
case kNeedCompaction:
if (field.size() != 1) {
return "need_compaction field wrong size";
}
f.marked_for_compaction = (field[0] == 1);
break;
case kMinLogNumberToKeepHack:
// This is a hack to encode kMinLogNumberToKeep in a
// forward-compatible fashion.
if (!GetFixed64(&field, &min_log_number_to_keep_)) {
return "deleted log number malformatted";
}
has_min_log_number_to_keep_ = true;
break;
case kOldestBlobFileNumber:
if (!GetVarint64(&field, &f.oldest_blob_file_number)) {
return "invalid oldest blob file number";
}
break;
default:
if ((custom_tag & kCustomTagNonSafeIgnoreMask) != 0) {
// Should not proceed if cannot understand it
return "new-file4 custom field not supported";
}
break;
}
}
} else {
return "new-file4 entry";
}
f.fd =
FileDescriptor(number, path_id, file_size, smallest_seqno, largest_seqno);
new_files_.push_back(std::make_pair(level, f));
return nullptr;
}
Status VersionEdit::DecodeFrom(const Slice& src) {
Clear();
Slice input = src;
const char* msg = nullptr;
uint32_t tag = 0;
// Temporary storage for parsing
int level = 0;
FileMetaData f;
Slice str;
InternalKey key;
while (msg == nullptr && GetVarint32(&input, &tag)) {
switch (tag) {
case kDbId:
if (GetLengthPrefixedSlice(&input, &str)) {
db_id_ = str.ToString();
has_db_id_ = true;
} else {
msg = "db id";
}
break;
case kComparator:
if (GetLengthPrefixedSlice(&input, &str)) {
comparator_ = str.ToString();
has_comparator_ = true;
} else {
msg = "comparator name";
}
break;
case kLogNumber:
if (GetVarint64(&input, &log_number_)) {
has_log_number_ = true;
} else {
msg = "log number";
}
break;
case kPrevLogNumber:
if (GetVarint64(&input, &prev_log_number_)) {
has_prev_log_number_ = true;
} else {
msg = "previous log number";
}
break;
case kNextFileNumber:
if (GetVarint64(&input, &next_file_number_)) {
has_next_file_number_ = true;
} else {
msg = "next file number";
}
break;
case kMaxColumnFamily:
if (GetVarint32(&input, &max_column_family_)) {
has_max_column_family_ = true;
} else {
msg = "max column family";
}
break;
case kMinLogNumberToKeep:
if (GetVarint64(&input, &min_log_number_to_keep_)) {
has_min_log_number_to_keep_ = true;
} else {
msg = "min log number to kee";
}
break;
case kLastSequence:
if (GetVarint64(&input, &last_sequence_)) {
has_last_sequence_ = true;
} else {
msg = "last sequence number";
}
break;
case kCompactPointer:
if (GetLevel(&input, &level, &msg) &&
GetInternalKey(&input, &key)) {
// we don't use compact pointers anymore,
// but we should not fail if they are still
// in manifest
} else {
if (!msg) {
msg = "compaction pointer";
}
}
break;
case kDeletedFile: {
uint64_t number = 0;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number)) {
deleted_files_.insert(std::make_pair(level, number));
} else {
if (!msg) {
msg = "deleted file";
}
}
break;
}
case kNewFile: {
uint64_t number = 0;
uint64_t file_size = 0;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest)) {
f.fd = FileDescriptor(number, 0, file_size);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file entry";
}
}
break;
}
case kNewFile2: {
uint64_t number = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest) &&
GetVarint64(&input, &smallest_seqno) &&
GetVarint64(&input, &largest_seqno)) {
f.fd = FileDescriptor(number, 0, file_size, smallest_seqno,
largest_seqno);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file2 entry";
}
}
break;
}
case kNewFile3: {
uint64_t number = 0;
uint32_t path_id = 0;
uint64_t file_size = 0;
SequenceNumber smallest_seqno = 0;
SequenceNumber largest_seqno = kMaxSequenceNumber;
if (GetLevel(&input, &level, &msg) && GetVarint64(&input, &number) &&
GetVarint32(&input, &path_id) && GetVarint64(&input, &file_size) &&
GetInternalKey(&input, &f.smallest) &&
GetInternalKey(&input, &f.largest) &&
GetVarint64(&input, &smallest_seqno) &&
GetVarint64(&input, &largest_seqno)) {
f.fd = FileDescriptor(number, path_id, file_size, smallest_seqno,
largest_seqno);
new_files_.push_back(std::make_pair(level, f));
} else {
if (!msg) {
msg = "new-file3 entry";
}
}
break;
}
case kNewFile4: {
msg = DecodeNewFile4From(&input);
break;
}
case kBlobFileAddition: {
BlobFileAddition blob_file_addition;
const Status s = blob_file_addition.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
AddBlobFile(std::move(blob_file_addition));
break;
}
case kBlobFileGarbage: {
BlobFileGarbage blob_file_garbage;
const Status s = blob_file_garbage.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
AddBlobFileGarbage(std::move(blob_file_garbage));
break;
}
case kWalAddition: {
WalAddition wal_addition;
const Status s = wal_addition.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
wal_additions_.emplace_back(std::move(wal_addition));
break;
}
case kWalDeletion: {
WalDeletion wal_deletion;
const Status s = wal_deletion.DecodeFrom(&input);
if (!s.ok()) {
return s;
}
wal_deletions_.emplace_back(std::move(wal_deletion));
break;
}
case kColumnFamily:
if (!GetVarint32(&input, &column_family_)) {
if (!msg) {
msg = "set column family id";
}
}
break;
case kColumnFamilyAdd:
if (GetLengthPrefixedSlice(&input, &str)) {
is_column_family_add_ = true;
column_family_name_ = str.ToString();
} else {
if (!msg) {
msg = "column family add";
}
}
break;
case kColumnFamilyDrop:
is_column_family_drop_ = true;
break;
case kInAtomicGroup:
is_in_atomic_group_ = true;
if (!GetVarint32(&input, &remaining_entries_)) {
if (!msg) {
msg = "remaining entries";
}
}
break;
default:
if (tag & kTagSafeIgnoreMask) {
// Tag from future which can be safely ignored.
// The next field must be the length of the entry.
uint32_t field_len;
if (!GetVarint32(&input, &field_len) ||
static_cast<size_t>(field_len) > input.size()) {
if (!msg) {
msg = "safely ignoreable tag length error";
}
} else {
input.remove_prefix(static_cast<size_t>(field_len));
}
} else {
msg = "unknown tag";
}
break;
}
}
if (msg == nullptr && !input.empty()) {
msg = "invalid tag";
}
Status result;
if (msg != nullptr) {
result = Status::Corruption("VersionEdit", msg);
}
return result;
}
std::string VersionEdit::DebugString(bool hex_key) const {
std::string r;
r.append("VersionEdit {");
if (has_db_id_) {
r.append("\n DB ID: ");
r.append(db_id_);
}
if (has_comparator_) {
r.append("\n Comparator: ");
r.append(comparator_);
}
if (has_log_number_) {
r.append("\n LogNumber: ");
AppendNumberTo(&r, log_number_);
}
if (has_prev_log_number_) {
r.append("\n PrevLogNumber: ");
AppendNumberTo(&r, prev_log_number_);
}
if (has_next_file_number_) {
r.append("\n NextFileNumber: ");
AppendNumberTo(&r, next_file_number_);
}
if (has_max_column_family_) {
r.append("\n MaxColumnFamily: ");
AppendNumberTo(&r, max_column_family_);
}
if (has_min_log_number_to_keep_) {
r.append("\n MinLogNumberToKeep: ");
AppendNumberTo(&r, min_log_number_to_keep_);
}
if (has_last_sequence_) {
r.append("\n LastSeq: ");
AppendNumberTo(&r, last_sequence_);
}
for (const auto& deleted_file : deleted_files_) {
r.append("\n DeleteFile: ");
AppendNumberTo(&r, deleted_file.first);
r.append(" ");
AppendNumberTo(&r, deleted_file.second);
}
for (size_t i = 0; i < new_files_.size(); i++) {
const FileMetaData& f = new_files_[i].second;
r.append("\n AddFile: ");
AppendNumberTo(&r, new_files_[i].first);
r.append(" ");
AppendNumberTo(&r, f.fd.GetNumber());
r.append(" ");
AppendNumberTo(&r, f.fd.GetFileSize());
r.append(" ");
r.append(f.smallest.DebugString(hex_key));
r.append(" .. ");
r.append(f.largest.DebugString(hex_key));
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
r.append(" blob_file:");
AppendNumberTo(&r, f.oldest_blob_file_number);
}
r.append(" oldest_ancester_time:");
AppendNumberTo(&r, f.oldest_ancester_time);
r.append(" file_creation_time:");
AppendNumberTo(&r, f.file_creation_time);
r.append(" file_checksum:");
r.append(f.file_checksum);
r.append(" file_checksum_func_name: ");
r.append(f.file_checksum_func_name);
}
for (const auto& blob_file_addition : blob_file_additions_) {
r.append("\n BlobFileAddition: ");
r.append(blob_file_addition.DebugString());
}
for (const auto& blob_file_garbage : blob_file_garbages_) {
r.append("\n BlobFileGarbage: ");
r.append(blob_file_garbage.DebugString());
}
for (const auto& wal_addition : wal_additions_) {
r.append("\n WalAddition: ");
r.append(wal_addition.DebugString());
}
for (const auto& wal_deletion : wal_deletions_) {
r.append("\n WalDeletion: ");
r.append(wal_deletion.DebugString());
}
r.append("\n ColumnFamily: ");
AppendNumberTo(&r, column_family_);
if (is_column_family_add_) {
r.append("\n ColumnFamilyAdd: ");
r.append(column_family_name_);
}
if (is_column_family_drop_) {
r.append("\n ColumnFamilyDrop");
}
if (is_in_atomic_group_) {
r.append("\n AtomicGroup: ");
AppendNumberTo(&r, remaining_entries_);
r.append(" entries remains");
}
r.append("\n}\n");
return r;
}
std::string VersionEdit::DebugJSON(int edit_num, bool hex_key) const {
JSONWriter jw;
jw << "EditNumber" << edit_num;
if (has_db_id_) {
jw << "DB ID" << db_id_;
}
if (has_comparator_) {
jw << "Comparator" << comparator_;
}
if (has_log_number_) {
jw << "LogNumber" << log_number_;
}
if (has_prev_log_number_) {
jw << "PrevLogNumber" << prev_log_number_;
}
if (has_next_file_number_) {
jw << "NextFileNumber" << next_file_number_;
}
if (has_max_column_family_) {
jw << "MaxColumnFamily" << max_column_family_;
}
if (has_min_log_number_to_keep_) {
jw << "MinLogNumberToKeep" << min_log_number_to_keep_;
}
if (has_last_sequence_) {
jw << "LastSeq" << last_sequence_;
}
if (!deleted_files_.empty()) {
jw << "DeletedFiles";
jw.StartArray();
for (const auto& deleted_file : deleted_files_) {
jw.StartArrayedObject();
jw << "Level" << deleted_file.first;
jw << "FileNumber" << deleted_file.second;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!new_files_.empty()) {
jw << "AddedFiles";
jw.StartArray();
for (size_t i = 0; i < new_files_.size(); i++) {
jw.StartArrayedObject();
jw << "Level" << new_files_[i].first;
const FileMetaData& f = new_files_[i].second;
jw << "FileNumber" << f.fd.GetNumber();
jw << "FileSize" << f.fd.GetFileSize();
jw << "SmallestIKey" << f.smallest.DebugString(hex_key);
jw << "LargestIKey" << f.largest.DebugString(hex_key);
if (f.oldest_blob_file_number != kInvalidBlobFileNumber) {
jw << "OldestBlobFile" << f.oldest_blob_file_number;
}
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!blob_file_additions_.empty()) {
jw << "BlobFileAdditions";
jw.StartArray();
for (const auto& blob_file_addition : blob_file_additions_) {
jw.StartArrayedObject();
jw << blob_file_addition;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!blob_file_garbages_.empty()) {
jw << "BlobFileGarbages";
jw.StartArray();
for (const auto& blob_file_garbage : blob_file_garbages_) {
jw.StartArrayedObject();
jw << blob_file_garbage;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!wal_additions_.empty()) {
jw << "WalAdditions";
jw.StartArray();
for (const auto& wal_addition : wal_additions_) {
jw.StartArrayedObject();
jw << wal_addition;
jw.EndArrayedObject();
}
jw.EndArray();
}
if (!wal_deletions_.empty()) {
jw << "WalDeletions";
jw.StartArray();
for (const auto& wal_deletion : wal_deletions_) {
jw.StartArrayedObject();
jw << wal_deletion;
jw.EndArrayedObject();
}
jw.EndArray();
}
jw << "ColumnFamily" << column_family_;
if (is_column_family_add_) {
jw << "ColumnFamilyAdd" << column_family_name_;
}
if (is_column_family_drop_) {
jw << "ColumnFamilyDrop" << column_family_name_;
}
if (is_in_atomic_group_) {
jw << "AtomicGroup" << remaining_entries_;
}
jw.EndObject();
return jw.Get();
}
} // namespace ROCKSDB_NAMESPACE
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