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#include "MergeTreeDataPartCompact.h"
#include <DataTypes/NestedUtils.h>
#include <Storages/MergeTree/MergeTreeReaderCompact.h>
#include <Storages/MergeTree/MergeTreeDataPartWriterCompact.h>
#include <Interpreters/Context.h>
#include <Storages/MergeTree/LoadedMergeTreeDataPartInfoForReader.h>
#include <Compression/CompressedReadBufferFromFile.h>
namespace DB
{
namespace ErrorCodes
{
extern const int CANNOT_READ_ALL_DATA;
extern const int NOT_IMPLEMENTED;
extern const int NO_FILE_IN_DATA_PART;
extern const int BAD_SIZE_OF_FILE_IN_DATA_PART;
}
MergeTreeDataPartCompact::MergeTreeDataPartCompact(
const MergeTreeData & storage_,
const String & name_,
const MergeTreePartInfo & info_,
const MutableDataPartStoragePtr & data_part_storage_,
const IMergeTreeDataPart * parent_part_)
: IMergeTreeDataPart(storage_, name_, info_, data_part_storage_, Type::Compact, parent_part_)
{
}
IMergeTreeDataPart::MergeTreeReaderPtr MergeTreeDataPartCompact::getReader(
const NamesAndTypesList & columns_to_read,
const StorageSnapshotPtr & storage_snapshot,
const MarkRanges & mark_ranges,
UncompressedCache * uncompressed_cache,
MarkCache * mark_cache,
const AlterConversionsPtr & alter_conversions,
const MergeTreeReaderSettings & reader_settings,
const ValueSizeMap & avg_value_size_hints,
const ReadBufferFromFileBase::ProfileCallback & profile_callback) const
{
auto read_info = std::make_shared<LoadedMergeTreeDataPartInfoForReader>(shared_from_this(), alter_conversions);
auto * load_marks_threadpool = reader_settings.read_settings.load_marks_asynchronously ? &read_info->getContext()->getLoadMarksThreadpool() : nullptr;
return std::make_unique<MergeTreeReaderCompact>(
read_info, columns_to_read, storage_snapshot, uncompressed_cache,
mark_cache, mark_ranges, reader_settings, load_marks_threadpool,
avg_value_size_hints, profile_callback);
}
IMergeTreeDataPart::MergeTreeWriterPtr MergeTreeDataPartCompact::getWriter(
const NamesAndTypesList & columns_list,
const StorageMetadataPtr & metadata_snapshot,
const std::vector<MergeTreeIndexPtr> & indices_to_recalc,
const CompressionCodecPtr & default_codec_,
const MergeTreeWriterSettings & writer_settings,
const MergeTreeIndexGranularity & computed_index_granularity)
{
NamesAndTypesList ordered_columns_list;
std::copy_if(columns_list.begin(), columns_list.end(), std::back_inserter(ordered_columns_list),
[this](const auto & column) { return getColumnPosition(column.name) != std::nullopt; });
/// Order of writing is important in compact format
ordered_columns_list.sort([this](const auto & lhs, const auto & rhs)
{ return *getColumnPosition(lhs.name) < *getColumnPosition(rhs.name); });
return std::make_unique<MergeTreeDataPartWriterCompact>(
shared_from_this(), ordered_columns_list, metadata_snapshot,
indices_to_recalc, getMarksFileExtension(),
default_codec_, writer_settings, computed_index_granularity);
}
void MergeTreeDataPartCompact::calculateEachColumnSizes(ColumnSizeByName & /*each_columns_size*/, ColumnSize & total_size) const
{
auto bin_checksum = checksums.files.find(DATA_FILE_NAME_WITH_EXTENSION);
if (bin_checksum != checksums.files.end())
{
total_size.data_compressed += bin_checksum->second.file_size;
total_size.data_uncompressed += bin_checksum->second.uncompressed_size;
}
auto mrk_checksum = checksums.files.find(DATA_FILE_NAME + getMarksFileExtension());
if (mrk_checksum != checksums.files.end())
total_size.marks += mrk_checksum->second.file_size;
}
void MergeTreeDataPartCompact::loadIndexGranularityImpl(
MergeTreeIndexGranularity & index_granularity_, const MergeTreeIndexGranularityInfo & index_granularity_info_,
size_t columns_count, const IDataPartStorage & data_part_storage_)
{
if (!index_granularity_info_.mark_type.adaptive)
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "MergeTreeDataPartCompact cannot be created with non-adaptive granulary.");
auto marks_file_path = index_granularity_info_.getMarksFilePath("data");
if (!data_part_storage_.exists(marks_file_path))
throw Exception(
ErrorCodes::NO_FILE_IN_DATA_PART,
"Marks file '{}' doesn't exist",
std::string(fs::path(data_part_storage_.getFullPath()) / marks_file_path));
size_t marks_file_size = data_part_storage_.getFileSize(marks_file_path);
std::unique_ptr<ReadBufferFromFileBase> buffer = data_part_storage_.readFile(
marks_file_path, ReadSettings().adjustBufferSize(marks_file_size), marks_file_size, std::nullopt);
std::unique_ptr<ReadBuffer> marks_reader;
bool marks_compressed = index_granularity_info_.mark_type.compressed;
if (marks_compressed)
marks_reader = std::make_unique<CompressedReadBufferFromFile>(std::move(buffer));
else
marks_reader = std::move(buffer);
while (!marks_reader->eof())
{
marks_reader->ignore(columns_count * sizeof(MarkInCompressedFile));
size_t granularity;
readBinaryLittleEndian(granularity, *marks_reader);
index_granularity_.appendMark(granularity);
}
if (!marks_compressed && index_granularity_.getMarksCount() * index_granularity_info_.getMarkSizeInBytes(columns_count) != marks_file_size)
throw Exception(ErrorCodes::CANNOT_READ_ALL_DATA, "Cannot read all marks from file {}", marks_file_path);
index_granularity_.setInitialized();
}
void MergeTreeDataPartCompact::loadIndexGranularity()
{
if (columns.empty())
throw Exception(ErrorCodes::NO_FILE_IN_DATA_PART, "No columns in part {}", name);
loadIndexGranularityImpl(index_granularity, index_granularity_info, columns.size(), getDataPartStorage());
}
bool MergeTreeDataPartCompact::hasColumnFiles(const NameAndTypePair & column) const
{
if (!getColumnPosition(column.getNameInStorage()))
return false;
auto bin_checksum = checksums.files.find(DATA_FILE_NAME_WITH_EXTENSION);
auto mrk_checksum = checksums.files.find(DATA_FILE_NAME + getMarksFileExtension());
return (bin_checksum != checksums.files.end() && mrk_checksum != checksums.files.end());
}
std::optional<time_t> MergeTreeDataPartCompact::getColumnModificationTime(const String & /* column_name */) const
{
return getDataPartStorage().getFileLastModified(DATA_FILE_NAME_WITH_EXTENSION).epochTime();
}
void MergeTreeDataPartCompact::checkConsistency(bool require_part_metadata) const
{
checkConsistencyBase();
String mrk_file_name = DATA_FILE_NAME + getMarksFileExtension();
if (!checksums.empty())
{
/// count.txt should be present even in non custom-partitioned parts
if (!checksums.files.contains("count.txt"))
throw Exception(ErrorCodes::NO_FILE_IN_DATA_PART, "No checksum for count.txt");
if (require_part_metadata)
{
if (!checksums.files.contains(mrk_file_name))
throw Exception(
ErrorCodes::NO_FILE_IN_DATA_PART,
"No marks file checksum for column in part {}",
getDataPartStorage().getFullPath());
if (!checksums.files.contains(DATA_FILE_NAME_WITH_EXTENSION))
throw Exception(
ErrorCodes::NO_FILE_IN_DATA_PART,
"No data file checksum for in part {}",
getDataPartStorage().getFullPath());
}
}
else
{
{
/// count.txt should be present even in non custom-partitioned parts
std::string file_path = "count.txt";
if (!getDataPartStorage().exists(file_path) || getDataPartStorage().getFileSize(file_path) == 0)
throw Exception(
ErrorCodes::BAD_SIZE_OF_FILE_IN_DATA_PART,
"Part {} is broken: {} is empty",
getDataPartStorage().getRelativePath(),
std::string(fs::path(getDataPartStorage().getFullPath()) / file_path));
}
/// Check that marks are nonempty and have the consistent size with columns number.
if (getDataPartStorage().exists(mrk_file_name))
{
UInt64 file_size = getDataPartStorage().getFileSize(mrk_file_name);
if (!file_size)
throw Exception(
ErrorCodes::BAD_SIZE_OF_FILE_IN_DATA_PART,
"Part {} is broken: {} is empty.",
getDataPartStorage().getRelativePath(),
std::string(fs::path(getDataPartStorage().getFullPath()) / mrk_file_name));
UInt64 expected_file_size = index_granularity_info.getMarkSizeInBytes(columns.size()) * index_granularity.getMarksCount();
if (expected_file_size != file_size)
throw Exception(
ErrorCodes::BAD_SIZE_OF_FILE_IN_DATA_PART,
"Part {} is broken: bad size of marks file '{}': {}, must be: {}",
getDataPartStorage().getRelativePath(),
std::string(fs::path(getDataPartStorage().getFullPath()) / mrk_file_name),
file_size, expected_file_size);
}
}
}
bool MergeTreeDataPartCompact::isStoredOnRemoteDisk() const
{
return getDataPartStorage().isStoredOnRemoteDisk();
}
bool MergeTreeDataPartCompact::isStoredOnRemoteDiskWithZeroCopySupport() const
{
return getDataPartStorage().supportZeroCopyReplication();
}
MergeTreeDataPartCompact::~MergeTreeDataPartCompact()
{
removeIfNeeded();
}
}
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