mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-30 22:41:48 +00:00
78a6e07c83
Summary:
When I build RocksDB for 32bits/LITE/iOS environment, some errors like the following.
`
table/block_based_table_reader.cc:971:44: error: implicit conversion loses integer precision: 'uint64_t'
(aka 'unsigned long long') to 'size_t' (aka 'unsigned long') [-Werror,-Wshorten-64-to-32]
size_t block_size = props_block_handle.size();
~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~^~~~~~
./util/file_reader_writer.h:177:8: error: private field 'env_' is not used [-Werror,-Wunused-private-field]
Env* env_;
^
`
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5220
Differential Revision: D15023481
Pulled By: siying
fbshipit-source-id: 1b5d121d3016f2b0a8a9a2cc1bd638479357f9f7
524 lines
20 KiB
C++
524 lines
20 KiB
C++
// 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).
|
|
#include "table/meta_blocks.h"
|
|
|
|
#include <map>
|
|
#include <string>
|
|
|
|
#include "db/table_properties_collector.h"
|
|
#include "rocksdb/table.h"
|
|
#include "rocksdb/table_properties.h"
|
|
#include "table/block.h"
|
|
#include "table/block_fetcher.h"
|
|
#include "table/format.h"
|
|
#include "table/internal_iterator.h"
|
|
#include "table/persistent_cache_helper.h"
|
|
#include "table/table_properties_internal.h"
|
|
#include "util/coding.h"
|
|
#include "util/file_reader_writer.h"
|
|
#include "util/sync_point.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
MetaIndexBuilder::MetaIndexBuilder()
|
|
: meta_index_block_(new BlockBuilder(1 /* restart interval */)) {}
|
|
|
|
void MetaIndexBuilder::Add(const std::string& key,
|
|
const BlockHandle& handle) {
|
|
std::string handle_encoding;
|
|
handle.EncodeTo(&handle_encoding);
|
|
meta_block_handles_.insert({key, handle_encoding});
|
|
}
|
|
|
|
Slice MetaIndexBuilder::Finish() {
|
|
for (const auto& metablock : meta_block_handles_) {
|
|
meta_index_block_->Add(metablock.first, metablock.second);
|
|
}
|
|
return meta_index_block_->Finish();
|
|
}
|
|
|
|
// Property block will be read sequentially and cached in a heap located
|
|
// object, so there's no need for restart points. Thus we set the restart
|
|
// interval to infinity to save space.
|
|
PropertyBlockBuilder::PropertyBlockBuilder()
|
|
: properties_block_(
|
|
new BlockBuilder(port::kMaxInt32 /* restart interval */)) {}
|
|
|
|
void PropertyBlockBuilder::Add(const std::string& name,
|
|
const std::string& val) {
|
|
props_.insert({name, val});
|
|
}
|
|
|
|
void PropertyBlockBuilder::Add(const std::string& name, uint64_t val) {
|
|
assert(props_.find(name) == props_.end());
|
|
|
|
std::string dst;
|
|
PutVarint64(&dst, val);
|
|
|
|
Add(name, dst);
|
|
}
|
|
|
|
void PropertyBlockBuilder::Add(
|
|
const UserCollectedProperties& user_collected_properties) {
|
|
for (const auto& prop : user_collected_properties) {
|
|
Add(prop.first, prop.second);
|
|
}
|
|
}
|
|
|
|
void PropertyBlockBuilder::AddTableProperty(const TableProperties& props) {
|
|
TEST_SYNC_POINT_CALLBACK("PropertyBlockBuilder::AddTableProperty:Start",
|
|
const_cast<TableProperties*>(&props));
|
|
|
|
Add(TablePropertiesNames::kRawKeySize, props.raw_key_size);
|
|
Add(TablePropertiesNames::kRawValueSize, props.raw_value_size);
|
|
Add(TablePropertiesNames::kDataSize, props.data_size);
|
|
Add(TablePropertiesNames::kIndexSize, props.index_size);
|
|
if (props.index_partitions != 0) {
|
|
Add(TablePropertiesNames::kIndexPartitions, props.index_partitions);
|
|
Add(TablePropertiesNames::kTopLevelIndexSize, props.top_level_index_size);
|
|
}
|
|
Add(TablePropertiesNames::kIndexKeyIsUserKey, props.index_key_is_user_key);
|
|
Add(TablePropertiesNames::kIndexValueIsDeltaEncoded,
|
|
props.index_value_is_delta_encoded);
|
|
Add(TablePropertiesNames::kNumEntries, props.num_entries);
|
|
Add(TablePropertiesNames::kDeletedKeys, props.num_deletions);
|
|
Add(TablePropertiesNames::kMergeOperands, props.num_merge_operands);
|
|
Add(TablePropertiesNames::kNumRangeDeletions, props.num_range_deletions);
|
|
Add(TablePropertiesNames::kNumDataBlocks, props.num_data_blocks);
|
|
Add(TablePropertiesNames::kFilterSize, props.filter_size);
|
|
Add(TablePropertiesNames::kFormatVersion, props.format_version);
|
|
Add(TablePropertiesNames::kFixedKeyLen, props.fixed_key_len);
|
|
Add(TablePropertiesNames::kColumnFamilyId, props.column_family_id);
|
|
Add(TablePropertiesNames::kCreationTime, props.creation_time);
|
|
Add(TablePropertiesNames::kOldestKeyTime, props.oldest_key_time);
|
|
if (props.file_creation_time > 0) {
|
|
Add(TablePropertiesNames::kFileCreationTime, props.file_creation_time);
|
|
}
|
|
|
|
if (!props.filter_policy_name.empty()) {
|
|
Add(TablePropertiesNames::kFilterPolicy, props.filter_policy_name);
|
|
}
|
|
if (!props.comparator_name.empty()) {
|
|
Add(TablePropertiesNames::kComparator, props.comparator_name);
|
|
}
|
|
|
|
if (!props.merge_operator_name.empty()) {
|
|
Add(TablePropertiesNames::kMergeOperator, props.merge_operator_name);
|
|
}
|
|
if (!props.prefix_extractor_name.empty()) {
|
|
Add(TablePropertiesNames::kPrefixExtractorName,
|
|
props.prefix_extractor_name);
|
|
}
|
|
if (!props.property_collectors_names.empty()) {
|
|
Add(TablePropertiesNames::kPropertyCollectors,
|
|
props.property_collectors_names);
|
|
}
|
|
if (!props.column_family_name.empty()) {
|
|
Add(TablePropertiesNames::kColumnFamilyName, props.column_family_name);
|
|
}
|
|
|
|
if (!props.compression_name.empty()) {
|
|
Add(TablePropertiesNames::kCompression, props.compression_name);
|
|
}
|
|
if (!props.compression_options.empty()) {
|
|
Add(TablePropertiesNames::kCompressionOptions, props.compression_options);
|
|
}
|
|
}
|
|
|
|
Slice PropertyBlockBuilder::Finish() {
|
|
for (const auto& prop : props_) {
|
|
properties_block_->Add(prop.first, prop.second);
|
|
}
|
|
|
|
return properties_block_->Finish();
|
|
}
|
|
|
|
void LogPropertiesCollectionError(
|
|
Logger* info_log, const std::string& method, const std::string& name) {
|
|
assert(method == "Add" || method == "Finish");
|
|
|
|
std::string msg =
|
|
"Encountered error when calling TablePropertiesCollector::" +
|
|
method + "() with collector name: " + name;
|
|
ROCKS_LOG_ERROR(info_log, "%s", msg.c_str());
|
|
}
|
|
|
|
bool NotifyCollectTableCollectorsOnAdd(
|
|
const Slice& key, const Slice& value, uint64_t file_size,
|
|
const std::vector<std::unique_ptr<IntTblPropCollector>>& collectors,
|
|
Logger* info_log) {
|
|
bool all_succeeded = true;
|
|
for (auto& collector : collectors) {
|
|
Status s = collector->InternalAdd(key, value, file_size);
|
|
all_succeeded = all_succeeded && s.ok();
|
|
if (!s.ok()) {
|
|
LogPropertiesCollectionError(info_log, "Add" /* method */,
|
|
collector->Name());
|
|
}
|
|
}
|
|
return all_succeeded;
|
|
}
|
|
|
|
void NotifyCollectTableCollectorsOnBlockAdd(
|
|
const std::vector<std::unique_ptr<IntTblPropCollector>>& collectors,
|
|
const uint64_t blockRawBytes, const uint64_t blockCompressedBytesFast,
|
|
const uint64_t blockCompressedBytesSlow) {
|
|
for (auto& collector : collectors) {
|
|
collector->BlockAdd(blockRawBytes, blockCompressedBytesFast,
|
|
blockCompressedBytesSlow);
|
|
}
|
|
}
|
|
|
|
bool NotifyCollectTableCollectorsOnFinish(
|
|
const std::vector<std::unique_ptr<IntTblPropCollector>>& collectors,
|
|
Logger* info_log, PropertyBlockBuilder* builder) {
|
|
bool all_succeeded = true;
|
|
for (auto& collector : collectors) {
|
|
UserCollectedProperties user_collected_properties;
|
|
Status s = collector->Finish(&user_collected_properties);
|
|
|
|
all_succeeded = all_succeeded && s.ok();
|
|
if (!s.ok()) {
|
|
LogPropertiesCollectionError(info_log, "Finish" /* method */,
|
|
collector->Name());
|
|
} else {
|
|
builder->Add(user_collected_properties);
|
|
}
|
|
}
|
|
|
|
return all_succeeded;
|
|
}
|
|
|
|
Status ReadProperties(const Slice& handle_value, RandomAccessFileReader* file,
|
|
FilePrefetchBuffer* prefetch_buffer, const Footer& footer,
|
|
const ImmutableCFOptions& ioptions,
|
|
TableProperties** table_properties, bool verify_checksum,
|
|
BlockHandle* ret_block_handle,
|
|
CacheAllocationPtr* verification_buf,
|
|
bool /*compression_type_missing*/,
|
|
MemoryAllocator* memory_allocator) {
|
|
assert(table_properties);
|
|
|
|
Slice v = handle_value;
|
|
BlockHandle handle;
|
|
if (!handle.DecodeFrom(&v).ok()) {
|
|
return Status::InvalidArgument("Failed to decode properties block handle");
|
|
}
|
|
|
|
BlockContents block_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = verify_checksum;
|
|
Status s;
|
|
PersistentCacheOptions cache_options;
|
|
|
|
BlockFetcher block_fetcher(
|
|
file, prefetch_buffer, footer, read_options, handle, &block_contents,
|
|
ioptions, false /* decompress */, false /*maybe_compressed*/,
|
|
UncompressionDict::GetEmptyDict(), cache_options, memory_allocator);
|
|
s = block_fetcher.ReadBlockContents();
|
|
// property block is never compressed. Need to add uncompress logic if we are
|
|
// to compress it..
|
|
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
Block properties_block(std::move(block_contents),
|
|
kDisableGlobalSequenceNumber);
|
|
DataBlockIter iter;
|
|
properties_block.NewIterator<DataBlockIter>(BytewiseComparator(),
|
|
BytewiseComparator(), &iter);
|
|
|
|
auto new_table_properties = new TableProperties();
|
|
// All pre-defined properties of type uint64_t
|
|
std::unordered_map<std::string, uint64_t*> predefined_uint64_properties = {
|
|
{TablePropertiesNames::kDataSize, &new_table_properties->data_size},
|
|
{TablePropertiesNames::kIndexSize, &new_table_properties->index_size},
|
|
{TablePropertiesNames::kIndexPartitions,
|
|
&new_table_properties->index_partitions},
|
|
{TablePropertiesNames::kTopLevelIndexSize,
|
|
&new_table_properties->top_level_index_size},
|
|
{TablePropertiesNames::kIndexKeyIsUserKey,
|
|
&new_table_properties->index_key_is_user_key},
|
|
{TablePropertiesNames::kIndexValueIsDeltaEncoded,
|
|
&new_table_properties->index_value_is_delta_encoded},
|
|
{TablePropertiesNames::kFilterSize, &new_table_properties->filter_size},
|
|
{TablePropertiesNames::kRawKeySize, &new_table_properties->raw_key_size},
|
|
{TablePropertiesNames::kRawValueSize,
|
|
&new_table_properties->raw_value_size},
|
|
{TablePropertiesNames::kNumDataBlocks,
|
|
&new_table_properties->num_data_blocks},
|
|
{TablePropertiesNames::kNumEntries, &new_table_properties->num_entries},
|
|
{TablePropertiesNames::kDeletedKeys,
|
|
&new_table_properties->num_deletions},
|
|
{TablePropertiesNames::kMergeOperands,
|
|
&new_table_properties->num_merge_operands},
|
|
{TablePropertiesNames::kNumRangeDeletions,
|
|
&new_table_properties->num_range_deletions},
|
|
{TablePropertiesNames::kFormatVersion,
|
|
&new_table_properties->format_version},
|
|
{TablePropertiesNames::kFixedKeyLen,
|
|
&new_table_properties->fixed_key_len},
|
|
{TablePropertiesNames::kColumnFamilyId,
|
|
&new_table_properties->column_family_id},
|
|
{TablePropertiesNames::kCreationTime,
|
|
&new_table_properties->creation_time},
|
|
{TablePropertiesNames::kOldestKeyTime,
|
|
&new_table_properties->oldest_key_time},
|
|
{TablePropertiesNames::kFileCreationTime,
|
|
&new_table_properties->file_creation_time},
|
|
};
|
|
|
|
std::string last_key;
|
|
for (iter.SeekToFirstOrReport(); iter.Valid(); iter.NextOrReport()) {
|
|
s = iter.status();
|
|
if (!s.ok()) {
|
|
break;
|
|
}
|
|
|
|
auto key = iter.key().ToString();
|
|
// properties block should be strictly sorted with no duplicate key.
|
|
if (!last_key.empty() &&
|
|
BytewiseComparator()->Compare(key, last_key) <= 0) {
|
|
s = Status::Corruption("properties unsorted");
|
|
break;
|
|
}
|
|
last_key = key;
|
|
|
|
auto raw_val = iter.value();
|
|
auto pos = predefined_uint64_properties.find(key);
|
|
|
|
new_table_properties->properties_offsets.insert(
|
|
{key, handle.offset() + iter.ValueOffset()});
|
|
|
|
if (pos != predefined_uint64_properties.end()) {
|
|
if (key == TablePropertiesNames::kDeletedKeys ||
|
|
key == TablePropertiesNames::kMergeOperands) {
|
|
// Insert in user-collected properties for API backwards compatibility
|
|
new_table_properties->user_collected_properties.insert(
|
|
{key, raw_val.ToString()});
|
|
}
|
|
// handle predefined rocksdb properties
|
|
uint64_t val;
|
|
if (!GetVarint64(&raw_val, &val)) {
|
|
// skip malformed value
|
|
auto error_msg =
|
|
"Detect malformed value in properties meta-block:"
|
|
"\tkey: " + key + "\tval: " + raw_val.ToString();
|
|
ROCKS_LOG_ERROR(ioptions.info_log, "%s", error_msg.c_str());
|
|
continue;
|
|
}
|
|
*(pos->second) = val;
|
|
} else if (key == TablePropertiesNames::kFilterPolicy) {
|
|
new_table_properties->filter_policy_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kColumnFamilyName) {
|
|
new_table_properties->column_family_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kComparator) {
|
|
new_table_properties->comparator_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kMergeOperator) {
|
|
new_table_properties->merge_operator_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kPrefixExtractorName) {
|
|
new_table_properties->prefix_extractor_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kPropertyCollectors) {
|
|
new_table_properties->property_collectors_names = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kCompression) {
|
|
new_table_properties->compression_name = raw_val.ToString();
|
|
} else if (key == TablePropertiesNames::kCompressionOptions) {
|
|
new_table_properties->compression_options = raw_val.ToString();
|
|
} else {
|
|
// handle user-collected properties
|
|
new_table_properties->user_collected_properties.insert(
|
|
{key, raw_val.ToString()});
|
|
}
|
|
}
|
|
if (s.ok()) {
|
|
*table_properties = new_table_properties;
|
|
if (ret_block_handle != nullptr) {
|
|
*ret_block_handle = handle;
|
|
}
|
|
if (verification_buf != nullptr) {
|
|
size_t len = static_cast<size_t>(handle.size() + kBlockTrailerSize);
|
|
*verification_buf = rocksdb::AllocateBlock(len, memory_allocator);
|
|
if (verification_buf->get() != nullptr) {
|
|
memcpy(verification_buf->get(), block_contents.data.data(), len);
|
|
}
|
|
}
|
|
} else {
|
|
delete new_table_properties;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status ReadTableProperties(RandomAccessFileReader* file, uint64_t file_size,
|
|
uint64_t table_magic_number,
|
|
const ImmutableCFOptions& ioptions,
|
|
TableProperties** properties,
|
|
bool compression_type_missing,
|
|
MemoryAllocator* memory_allocator) {
|
|
// -- Read metaindex block
|
|
Footer footer;
|
|
auto s = ReadFooterFromFile(file, nullptr /* prefetch_buffer */, file_size,
|
|
&footer, table_magic_number);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
auto metaindex_handle = footer.metaindex_handle();
|
|
BlockContents metaindex_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = false;
|
|
PersistentCacheOptions cache_options;
|
|
|
|
BlockFetcher block_fetcher(
|
|
file, nullptr /* prefetch_buffer */, footer, read_options,
|
|
metaindex_handle, &metaindex_contents, ioptions, false /* decompress */,
|
|
false /*maybe_compressed*/, UncompressionDict::GetEmptyDict(),
|
|
cache_options, memory_allocator);
|
|
s = block_fetcher.ReadBlockContents();
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
// property blocks are never compressed. Need to add uncompress logic if we
|
|
// are to compress it.
|
|
Block metaindex_block(std::move(metaindex_contents),
|
|
kDisableGlobalSequenceNumber);
|
|
std::unique_ptr<InternalIterator> meta_iter(
|
|
metaindex_block.NewIterator<DataBlockIter>(BytewiseComparator(),
|
|
BytewiseComparator()));
|
|
|
|
// -- Read property block
|
|
bool found_properties_block = true;
|
|
s = SeekToPropertiesBlock(meta_iter.get(), &found_properties_block);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
TableProperties table_properties;
|
|
if (found_properties_block == true) {
|
|
s = ReadProperties(
|
|
meta_iter->value(), file, nullptr /* prefetch_buffer */, footer,
|
|
ioptions, properties, false /* verify_checksum */,
|
|
nullptr /* ret_block_hanel */, nullptr /* ret_block_contents */,
|
|
compression_type_missing, memory_allocator);
|
|
} else {
|
|
s = Status::NotFound();
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
Status FindMetaBlock(InternalIterator* meta_index_iter,
|
|
const std::string& meta_block_name,
|
|
BlockHandle* block_handle) {
|
|
meta_index_iter->Seek(meta_block_name);
|
|
if (meta_index_iter->status().ok() && meta_index_iter->Valid() &&
|
|
meta_index_iter->key() == meta_block_name) {
|
|
Slice v = meta_index_iter->value();
|
|
return block_handle->DecodeFrom(&v);
|
|
} else {
|
|
return Status::Corruption("Cannot find the meta block", meta_block_name);
|
|
}
|
|
}
|
|
|
|
Status FindMetaBlock(RandomAccessFileReader* file, uint64_t file_size,
|
|
uint64_t table_magic_number,
|
|
const ImmutableCFOptions& ioptions,
|
|
const std::string& meta_block_name,
|
|
BlockHandle* block_handle,
|
|
bool /*compression_type_missing*/,
|
|
MemoryAllocator* memory_allocator) {
|
|
Footer footer;
|
|
auto s = ReadFooterFromFile(file, nullptr /* prefetch_buffer */, file_size,
|
|
&footer, table_magic_number);
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
|
|
auto metaindex_handle = footer.metaindex_handle();
|
|
BlockContents metaindex_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = false;
|
|
PersistentCacheOptions cache_options;
|
|
BlockFetcher block_fetcher(
|
|
file, nullptr /* prefetch_buffer */, footer, read_options,
|
|
metaindex_handle, &metaindex_contents, ioptions,
|
|
false /* do decompression */, false /*maybe_compressed*/,
|
|
UncompressionDict::GetEmptyDict(), cache_options, memory_allocator);
|
|
s = block_fetcher.ReadBlockContents();
|
|
if (!s.ok()) {
|
|
return s;
|
|
}
|
|
// meta blocks are never compressed. Need to add uncompress logic if we are to
|
|
// compress it.
|
|
Block metaindex_block(std::move(metaindex_contents),
|
|
kDisableGlobalSequenceNumber);
|
|
|
|
std::unique_ptr<InternalIterator> meta_iter;
|
|
meta_iter.reset(metaindex_block.NewIterator<DataBlockIter>(
|
|
BytewiseComparator(), BytewiseComparator()));
|
|
|
|
return FindMetaBlock(meta_iter.get(), meta_block_name, block_handle);
|
|
}
|
|
|
|
Status ReadMetaBlock(RandomAccessFileReader* file,
|
|
FilePrefetchBuffer* prefetch_buffer, uint64_t file_size,
|
|
uint64_t table_magic_number,
|
|
const ImmutableCFOptions& ioptions,
|
|
const std::string& meta_block_name,
|
|
BlockContents* contents, bool /*compression_type_missing*/,
|
|
MemoryAllocator* memory_allocator) {
|
|
Status status;
|
|
Footer footer;
|
|
status = ReadFooterFromFile(file, prefetch_buffer, file_size, &footer,
|
|
table_magic_number);
|
|
if (!status.ok()) {
|
|
return status;
|
|
}
|
|
|
|
// Reading metaindex block
|
|
auto metaindex_handle = footer.metaindex_handle();
|
|
BlockContents metaindex_contents;
|
|
ReadOptions read_options;
|
|
read_options.verify_checksums = false;
|
|
PersistentCacheOptions cache_options;
|
|
|
|
BlockFetcher block_fetcher(file, prefetch_buffer, footer, read_options,
|
|
metaindex_handle, &metaindex_contents, ioptions,
|
|
false /* decompress */, false /*maybe_compressed*/,
|
|
UncompressionDict::GetEmptyDict(), cache_options,
|
|
memory_allocator);
|
|
status = block_fetcher.ReadBlockContents();
|
|
if (!status.ok()) {
|
|
return status;
|
|
}
|
|
// meta block is never compressed. Need to add uncompress logic if we are to
|
|
// compress it.
|
|
|
|
// Finding metablock
|
|
Block metaindex_block(std::move(metaindex_contents),
|
|
kDisableGlobalSequenceNumber);
|
|
|
|
std::unique_ptr<InternalIterator> meta_iter;
|
|
meta_iter.reset(metaindex_block.NewIterator<DataBlockIter>(
|
|
BytewiseComparator(), BytewiseComparator()));
|
|
|
|
BlockHandle block_handle;
|
|
status = FindMetaBlock(meta_iter.get(), meta_block_name, &block_handle);
|
|
|
|
if (!status.ok()) {
|
|
return status;
|
|
}
|
|
|
|
// Reading metablock
|
|
BlockFetcher block_fetcher2(
|
|
file, prefetch_buffer, footer, read_options, block_handle, contents,
|
|
ioptions, false /* decompress */, false /*maybe_compressed*/,
|
|
UncompressionDict::GetEmptyDict(), cache_options, memory_allocator);
|
|
return block_fetcher2.ReadBlockContents();
|
|
}
|
|
|
|
} // namespace rocksdb
|