yiguolei commented on code in PR #65046: URL: https://github.com/apache/doris/pull/65046#discussion_r3503886535
########## be/src/exec/scan/file_scanner_v2.cpp: ########## @@ -0,0 +1,835 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +#include "exec/scan/file_scanner_v2.h" + +#include <gen_cpp/Exprs_types.h> +#include <gen_cpp/PlanNodes_types.h> + +#include <algorithm> +#include <map> +#include <memory> +#include <optional> +#include <string> +#include <utility> + +#include "common/cast_set.h" +#include "common/config.h" +#include "common/consts.h" +#include "common/status.h" +#include "core/assert_cast.h" +#include "core/block/column_with_type_and_name.h" +#include "core/column/column.h" +#include "core/data_type/data_type.h" +#include "core/data_type/data_type_nullable.h" +#include "core/data_type_serde/data_type_serde.h" +#include "core/string_ref.h" +#include "exec/common/util.hpp" +#include "exec/operator/scan_operator.h" +#include "exec/scan/access_path_parser.h" +#include "exprs/runtime_filter_expr.h" +#include "exprs/vexpr.h" +#include "exprs/vexpr_context.h" +#include "exprs/vslot_ref.h" +#include "format/format_common.h" +#include "format_v2/column_mapper.h" +#include "format_v2/jni/iceberg_sys_table_reader.h" +#include "format_v2/jni/jdbc_reader.h" +#include "format_v2/jni/max_compute_jni_reader.h" +#include "format_v2/jni/trino_connector_jni_reader.h" +#include "format_v2/table/hive_reader.h" +#include "format_v2/table/hudi_reader.h" +#include "format_v2/table/iceberg_reader.h" +#include "format_v2/table/paimon_reader.h" +#include "format_v2/table/remote_doris_reader.h" +#include "format_v2/table_reader.h" +#include "io/fs/file_meta_cache.h" +#include "io/io_common.h" +#include "runtime/descriptors.h" +#include "runtime/exec_env.h" +#include "runtime/runtime_state.h" +#include "service/backend_options.h" +#include "storage/id_manager.h" + +namespace doris { +namespace { + +std::string table_format_name(const TFileRangeDesc& range) { + return range.__isset.table_format_params ? range.table_format_params.table_format_type + : "NotSet"; +} + +TFileFormatType::type get_range_format_type(const TFileScanRangeParams& params, + const TFileRangeDesc& range) { + return range.__isset.format_type ? range.format_type : params.format_type; +} + +bool is_supported_table_format(const TFileRangeDesc& range) { + const auto table_format = table_format_name(range); + if (table_format == "hudi" && range.__isset.table_format_params && + range.table_format_params.__isset.hudi_params && + range.table_format_params.hudi_params.__isset.delta_logs && + !range.table_format_params.hudi_params.delta_logs.empty()) { + // Hudi MOR splits need log-file merge semantics and must stay on the existing JNI path. + // FileScannerV2 currently supports native Parquet data files only. + return false; + } + return table_format == "NotSet" || table_format == "tvf" || table_format == "hive" || + table_format == "iceberg" || table_format == "paimon" || table_format == "hudi"; +} + +bool is_supported_arrow_table_format(const TFileRangeDesc& range) { + return table_format_name(range) == "remote_doris"; +} + +bool is_supported_jni_table_format(const TFileRangeDesc& range) { + const auto table_format = table_format_name(range); + if (table_format == "paimon") { + return range.__isset.table_format_params && + range.table_format_params.__isset.paimon_params && + range.table_format_params.paimon_params.__isset.reader_type && + range.table_format_params.paimon_params.reader_type == TPaimonReaderType::PAIMON_JNI; + } + return table_format == "jdbc" || table_format == "iceberg" || table_format == "hudi" || + table_format == "max_compute" || table_format == "trino_connector"; +} + +bool is_csv_format(TFileFormatType::type format_type) { + switch (format_type) { + case TFileFormatType::FORMAT_CSV_PLAIN: + case TFileFormatType::FORMAT_CSV_GZ: + case TFileFormatType::FORMAT_CSV_BZ2: + case TFileFormatType::FORMAT_CSV_LZ4FRAME: + case TFileFormatType::FORMAT_CSV_LZ4BLOCK: + case TFileFormatType::FORMAT_CSV_LZOP: + case TFileFormatType::FORMAT_CSV_DEFLATE: + case TFileFormatType::FORMAT_CSV_SNAPPYBLOCK: + case TFileFormatType::FORMAT_PROTO: + return true; + default: + return false; + } +} + +bool is_text_format(TFileFormatType::type format_type) { + return format_type == TFileFormatType::FORMAT_TEXT; +} + +bool is_json_format(TFileFormatType::type format_type) { + return format_type == TFileFormatType::FORMAT_JSON; +} + +bool is_native_format(TFileFormatType::type format_type) { + return format_type == TFileFormatType::FORMAT_NATIVE; +} + +bool is_partition_slot(const TFileScanSlotInfo& slot_info, const std::string& column_name) { + if (column_name.starts_with(BeConsts::GLOBAL_ROWID_COL) || + column_name == BeConsts::ICEBERG_ROWID_COL) { + return false; + } + return slot_info.__isset.category ? slot_info.category == TColumnCategory::PARTITION_KEY + : !slot_info.is_file_slot; +} + +bool is_data_file_slot(const TFileScanSlotInfo& slot_info, const std::string& column_name) { + if (column_name.starts_with(BeConsts::GLOBAL_ROWID_COL) || + column_name == BeConsts::ICEBERG_ROWID_COL) { + return false; + } + // CSV and other non-self-describing formats need FE slot descriptors for only the columns that + // are physically read from the file. Partition/default/virtual columns stay in TableReader's + // mapping layer and are materialized after the file-local block is read. New FE provides an + // explicit category; old FE falls back to `is_file_slot`. + if (slot_info.__isset.category) { + return slot_info.category == TColumnCategory::REGULAR || + slot_info.category == TColumnCategory::GENERATED; + } + return slot_info.is_file_slot; +} + +Status rewrite_slot_refs_to_global_index( + VExprSPtr* expr, + const std::unordered_map<int32_t, format::GlobalIndex>& slot_id_to_global_index) { + DORIS_CHECK(expr != nullptr); + if (*expr == nullptr) { + return Status::OK(); + } + if (auto* runtime_filter = dynamic_cast<RuntimeFilterExpr*>(expr->get()); + runtime_filter != nullptr) { + auto impl = runtime_filter->get_impl(); + DORIS_CHECK(impl != nullptr); + RETURN_IF_ERROR(rewrite_slot_refs_to_global_index(&impl, slot_id_to_global_index)); + runtime_filter->set_impl(std::move(impl)); + return Status::OK(); + } + if ((*expr)->is_slot_ref()) { + const auto* slot_ref = assert_cast<const VSlotRef*>(expr->get()); + const auto global_index_it = slot_id_to_global_index.find(slot_ref->slot_id()); + if (global_index_it == slot_id_to_global_index.end()) { + DORIS_CHECK(slot_ref->slot_id() >= 0); + const auto global_index = format::GlobalIndex(cast_set<size_t>(slot_ref->slot_id())); + *expr = VSlotRef::create_shared(cast_set<int>(global_index.value()), + cast_set<int>(global_index.value()), -1, + slot_ref->data_type(), slot_ref->column_name()); + RETURN_IF_ERROR(expr->get()->prepare(nullptr, RowDescriptor(), nullptr)); + return Status::OK(); + } + const auto global_index = global_index_it->second; + *expr = VSlotRef::create_shared(cast_set<int>(global_index.value()), + cast_set<int>(global_index.value()), -1, + slot_ref->data_type(), slot_ref->column_name()); + RETURN_IF_ERROR(expr->get()->prepare(nullptr, RowDescriptor(), nullptr)); + return Status::OK(); + } + auto children = (*expr)->children(); + for (auto& child : children) { + if (child == nullptr) { + continue; + } + RETURN_IF_ERROR(rewrite_slot_refs_to_global_index(&child, slot_id_to_global_index)); + } + (*expr)->set_children(std::move(children)); + return Status::OK(); +} + +} // namespace + +#ifdef BE_TEST +Status FileScannerV2::TEST_to_file_format(TFileFormatType::type format_type, + format::FileFormat* file_format) { + return _to_file_format(format_type, file_format); +} + +bool FileScannerV2::TEST_is_partition_slot(const TFileScanSlotInfo& slot_info, + const std::string& column_name) { + return is_partition_slot(slot_info, column_name); +} + +bool FileScannerV2::TEST_is_data_file_slot(const TFileScanSlotInfo& slot_info, + const std::string& column_name) { + return is_data_file_slot(slot_info, column_name); +} + +Status FileScannerV2::TEST_rewrite_slot_refs_to_global_index( + VExprSPtr* expr, + const std::unordered_map<int32_t, format::GlobalIndex>& slot_id_to_global_index) { + return rewrite_slot_refs_to_global_index(expr, slot_id_to_global_index); +} +#endif + +bool FileScannerV2::is_supported(const TFileScanRangeParams& params, const TFileRangeDesc& range) { + const auto format_type = get_range_format_type(params, range); + if (format_type == TFileFormatType::FORMAT_PARQUET) { + return is_supported_table_format(range); + } else if (format_type == TFileFormatType::FORMAT_ARROW) { + return is_supported_arrow_table_format(range); + } else if (format_type == TFileFormatType::FORMAT_JNI) { + return is_supported_jni_table_format(range); + } else if (is_csv_format(format_type) || is_text_format(format_type) || + is_json_format(format_type) || is_native_format(format_type)) { + return is_supported_table_format(range); + } else { + LOG(WARNING) << "Unsupported file format type " << format_type << " for file scanner v2"; + return false; + } +} + +FileScannerV2::FileScannerV2(RuntimeState* state, FileScanLocalState* local_state, int64_t limit, + std::shared_ptr<SplitSourceConnector> split_source, + RuntimeProfile* profile, ShardedKVCache* kv_cache, + const std::unordered_map<std::string, int>* colname_to_slot_id) + : Scanner(state, local_state, limit, profile), + _split_source(std::move(split_source)), + _kv_cache(kv_cache) { + (void)colname_to_slot_id; + if (state->get_query_ctx() != nullptr && + state->get_query_ctx()->file_scan_range_params_map.count(local_state->parent_id()) > 0) { + _params = &(state->get_query_ctx()->file_scan_range_params_map[local_state->parent_id()]); + } else { + _params = _split_source->get_params(); + } +} + +Status FileScannerV2::init(RuntimeState* state, const VExprContextSPtrs& conjuncts) { + RETURN_IF_ERROR(Scanner::init(state, conjuncts)); + _get_block_timer = + ADD_TIMER_WITH_LEVEL(_local_state->scanner_profile(), "FileScannerV2GetBlockTime", 1); + _file_counter = + ADD_COUNTER_WITH_LEVEL(_local_state->scanner_profile(), "FileNumber", TUnit::UNIT, 1); + _file_read_bytes_counter = ADD_COUNTER_WITH_LEVEL(_local_state->scanner_profile(), + "FileReadBytes", TUnit::BYTES, 1); + _file_read_calls_counter = ADD_COUNTER_WITH_LEVEL(_local_state->scanner_profile(), + "FileReadCalls", TUnit::UNIT, 1); + _file_read_time_counter = + ADD_TIMER_WITH_LEVEL(_local_state->scanner_profile(), "FileReadTime", 1); + _adaptive_batch_predicted_rows_counter = ADD_COUNTER_WITH_LEVEL( + _local_state->scanner_profile(), "AdaptiveBatchPredictedRows", TUnit::UNIT, 1); + _adaptive_batch_actual_bytes_counter = ADD_COUNTER_WITH_LEVEL( + _local_state->scanner_profile(), "AdaptiveBatchActualBytes", TUnit::BYTES, 1); + _adaptive_batch_probe_count_counter = ADD_COUNTER_WITH_LEVEL( + _local_state->scanner_profile(), "AdaptiveBatchProbeCount", TUnit::UNIT, 1); + _file_cache_statistics = std::make_unique<io::FileCacheStatistics>(); + _file_reader_stats = std::make_unique<io::FileReaderStats>(); + RETURN_IF_ERROR(_init_io_ctx()); + _io_ctx->file_cache_stats = _file_cache_statistics.get(); + _io_ctx->file_reader_stats = _file_reader_stats.get(); + _io_ctx->is_disposable = _state->query_options().disable_file_cache; + return Status::OK(); +} + +Status FileScannerV2::_open_impl(RuntimeState* state) { + RETURN_IF_CANCELLED(state); + RETURN_IF_ERROR(Scanner::_open_impl(state)); + RETURN_IF_ERROR(_split_source->get_next(&_first_scan_range, &_current_range)); + if (_first_scan_range) { + RETURN_IF_ERROR(_create_table_reader_for_format(_current_range, &_table_reader)); + DORIS_CHECK(_table_reader != nullptr); + RETURN_IF_ERROR(_init_expr_ctxes()); + RETURN_IF_ERROR(_init_table_reader(_current_range)); + } + return Status::OK(); +} + +Status FileScannerV2::_get_block_impl(RuntimeState* state, Block* block, bool* eof) { + while (true) { + RETURN_IF_CANCELLED(state); + if (!_has_prepared_split) { + RETURN_IF_ERROR(_prepare_next_split(eof)); + if (*eof) { + return Status::OK(); + } + } + + { + SCOPED_TIMER(_get_block_timer); + if (_should_run_adaptive_batch_size()) { + _table_reader->set_batch_size(_predict_reader_batch_rows()); + } + RETURN_IF_ERROR(_table_reader->get_block(block, eof)); + } + if (*eof) { + _state->update_num_finished_scan_range(1); + _has_prepared_split = false; + *eof = false; + continue; + } + _update_adaptive_batch_size(*block); + return Status::OK(); + } +} + +Status FileScannerV2::_prepare_next_split(bool* eos) { + bool has_next = _first_scan_range; + if (!_first_scan_range) { + RETURN_IF_ERROR(_split_source->get_next(&has_next, &_current_range)); + } + _first_scan_range = false; + if (!has_next || _should_stop) { + *eos = true; + return Status::OK(); + } + DORIS_CHECK(_table_reader != nullptr); + _current_range_path = _current_range.path; + _init_adaptive_batch_size_state(get_range_format_type(*_params, _current_range)); + RETURN_IF_ERROR(_prepare_table_reader_split(_current_range)); + COUNTER_UPDATE(_file_counter, 1); + _has_prepared_split = true; + *eos = false; + return Status::OK(); +} + +Status FileScannerV2::_init_table_reader(const TFileRangeDesc& range) { + const auto format_type = get_range_format_type(*_params, range); + format::FileFormat file_format; + RETURN_IF_ERROR(_to_file_format(format_type, &file_format)); + DORIS_CHECK(_table_reader != nullptr); + + format::TableColumnPredicates table_column_predicates; + RETURN_IF_ERROR(_build_table_column_predicates(&table_column_predicates)); + VExprContextSPtrs table_conjuncts; + RETURN_IF_ERROR(_build_table_conjuncts(&table_conjuncts)); + RETURN_IF_ERROR(_table_reader->init({ + .projected_columns = _projected_columns, + .column_predicates = std::move(table_column_predicates), + .conjuncts = std::move(table_conjuncts), + .format = file_format, + .scan_params = const_cast<TFileScanRangeParams*>(_params), + .io_ctx = _io_ctx, + .runtime_state = _state, + .scanner_profile = _local_state->scanner_profile(), + .file_slot_descs = &_file_slot_descs, + .push_down_agg_type = _local_state->get_push_down_agg_type(), + .condition_cache_digest = _local_state->get_condition_cache_digest(), + })); + return Status::OK(); +} + +Status FileScannerV2::_create_table_reader_for_format( + const TFileRangeDesc& range, std::unique_ptr<format::TableReader>* reader) const { + DORIS_CHECK(reader != nullptr); + const auto table_format = table_format_name(range); + if (table_format == "NotSet" || table_format == "tvf") { + *reader = std::make_unique<format::TableReader>(); + } else if (table_format == "hive") { + *reader = format::hive::HiveReader::create_unique(); + } else if (table_format == "iceberg") { + if (get_range_format_type(*_params, range) == TFileFormatType::FORMAT_JNI) { + *reader = std::make_unique<format::iceberg::IcebergSysTableJniReader>(); + } else { + *reader = std::make_unique<format::iceberg::IcebergTableReader>(); + } + } else if (table_format == "paimon") { + *reader = std::make_unique<format::paimon::PaimonHybridReader>(); + } else if (table_format == "hudi") { + *reader = std::make_unique<format::hudi::HudiHybridReader>(); + } else if (table_format == "jdbc") { + *reader = std::make_unique<format::jdbc::JdbcJniReader>(); + } else if (table_format == "max_compute") { + const auto* mc_desc = + static_cast<const MaxComputeTableDescriptor*>(_output_tuple_desc->table_desc()); + RETURN_IF_ERROR(mc_desc->init_status()); + *reader = std::make_unique<format::max_compute::MaxComputeJniReader>(mc_desc); + } else if (table_format == "trino_connector") { + *reader = std::make_unique<format::trino_connector::TrinoConnectorJniReader>(); + } else if (table_format == "remote_doris") { + *reader = std::make_unique<format::remote_doris::RemoteDorisReader>(); + } else { + return Status::NotSupported("FileScannerV2 does not support table format {}", table_format); + } + return Status::OK(); +} + +Status FileScannerV2::_prepare_table_reader_split(const TFileRangeDesc& range) { + std::map<std::string, Field> partition_values; + RETURN_IF_ERROR(_generate_partition_values(range, &partition_values)); + format::FileFormat current_split_format; + RETURN_IF_ERROR(_to_file_format(get_range_format_type(*_params, range), ¤t_split_format)); + RETURN_IF_ERROR(_table_reader->prepare_split({ + .partition_values = std::move(partition_values), + .cache = _kv_cache, + .current_range = range, + .current_split_format = current_split_format, + .global_rowid_context = _create_global_rowid_context(range), + })); + return Status::OK(); +} + +bool FileScannerV2::_should_enable_file_meta_cache() const { + return ExecEnv::GetInstance()->file_meta_cache()->enabled() && + _split_source->num_scan_ranges() < config::max_external_file_meta_cache_num / 3; +} + +std::optional<format::GlobalRowIdContext> FileScannerV2::_create_global_rowid_context( + const TFileRangeDesc& range) const { + if (!_need_global_rowid_column) { + return std::nullopt; + } + auto& id_file_map = _state->get_id_file_map(); + DORIS_CHECK(id_file_map != nullptr); + const auto file_id = id_file_map->get_file_mapping_id( + std::make_shared<FileMapping>(_local_state->cast<FileScanLocalState>().parent_id(), + range, _should_enable_file_meta_cache())); + return format::GlobalRowIdContext { + .version = IdManager::ID_VERSION, + .backend_id = BackendOptions::get_backend_id(), + .file_id = file_id, + }; +} + +Status FileScannerV2::_generate_partition_values( + const TFileRangeDesc& range, std::map<std::string, Field>* partition_values) const { + DORIS_CHECK(partition_values != nullptr); + partition_values->clear(); + if (!range.__isset.columns_from_path_keys || !range.__isset.columns_from_path) { + return Status::OK(); + } + DORIS_CHECK(range.columns_from_path_keys.size() == range.columns_from_path.size()); + for (size_t idx = 0; idx < range.columns_from_path_keys.size(); ++idx) { + const auto& key = range.columns_from_path_keys[idx]; + const auto it = _partition_slot_descs.find(key); + if (it == _partition_slot_descs.end()) { + continue; + } + const auto& value = range.columns_from_path[idx]; + const bool is_null = range.__isset.columns_from_path_is_null && + idx < range.columns_from_path_is_null.size() && + range.columns_from_path_is_null[idx]; + Field field; + DORIS_CHECK(it->second.slot_desc != nullptr); + RETURN_IF_ERROR(_parse_partition_value(it->second.slot_desc, value, is_null, &field)); + partition_values->emplace(it->second.canonical_name, std::move(field)); + } + return Status::OK(); +} + +Status FileScannerV2::_parse_partition_value(const SlotDescriptor* slot_desc, + const std::string& value, bool is_null, + Field* field) const { + DORIS_CHECK(slot_desc != nullptr); + DORIS_CHECK(field != nullptr); + if (is_null) { + *field = Field::create_field<TYPE_NULL>(Null()); + return Status::OK(); + } + const auto data_type = remove_nullable(slot_desc->get_data_type_ptr()); + auto column = data_type->create_column(); + auto serde = data_type->get_serde(); + DataTypeSerDe::FormatOptions options; + options.converted_from_string = true; + StringRef ref(value.data(), value.size()); + RETURN_IF_ERROR(serde->from_string(ref, *column, options)); + DORIS_CHECK(column->size() == 1); + *field = (*column)[0]; + return Status::OK(); +} + +Status FileScannerV2::_init_expr_ctxes() { + _slot_id_to_desc.clear(); + _slot_id_to_global_index.clear(); + _partition_slot_descs.clear(); + _file_slot_descs.clear(); + for (const auto* slot_desc : _output_tuple_desc->slots()) { + _slot_id_to_desc.emplace(slot_desc->id(), slot_desc); + } + DORIS_CHECK(_table_reader != nullptr); + RETURN_IF_ERROR(_build_projected_columns(*_table_reader)); + return Status::OK(); +} + +Status FileScannerV2::_build_projected_columns(const format::TableReader& table_reader) { + _projected_columns.clear(); + _projected_columns.reserve(_params->required_slots.size()); + _need_global_rowid_column = false; + format::ProjectedColumnBuildContext build_context { + .scan_params = _params, + .range = &_current_range, + .runtime_state = _state, + }; + + for (size_t slot_idx = 0; slot_idx < _params->required_slots.size(); ++slot_idx) { + const auto& slot_info = _params->required_slots[slot_idx]; + const auto it = _slot_id_to_desc.find(slot_info.slot_id); + if (it == _slot_id_to_desc.end()) { + return Status::InternalError("Unknown source slot descriptor, slot_id={}", + slot_info.slot_id); + } + auto column = _build_table_column(it->second); + if (column.name.starts_with(BeConsts::GLOBAL_ROWID_COL)) { + _need_global_rowid_column = true; + } + RETURN_IF_ERROR(_build_default_expr(slot_info, &column.default_expr)); + build_context.schema_column.reset(); + RETURN_IF_ERROR(table_reader.annotate_projected_column(slot_info, &build_context, &column)); + // Build nested children from access paths generated by the slot's access-path + // expressions. A projected column can therefore contain only a subset of the schema + // column's nested children. + RETURN_IF_ERROR(AccessPathParser::build_nested_children( + &column, it->second, + build_context.schema_column.has_value() ? &*build_context.schema_column : nullptr)); + if (is_partition_slot(slot_info, column.name)) { + column.is_partition_key = true; + _partition_slot_descs.emplace( + column.name, + PartitionSlotInfo {.slot_desc = it->second, .canonical_name = column.name}); + for (const auto& alias : column.name_mapping) { + _partition_slot_descs.emplace( + alias, + PartitionSlotInfo {.slot_desc = it->second, .canonical_name = column.name}); + } + } else if (is_data_file_slot(slot_info, column.name)) { + _file_slot_descs.push_back(const_cast<SlotDescriptor*>(it->second)); + } + const auto global_index = format::GlobalIndex(slot_idx); + _slot_id_to_global_index.emplace(slot_info.slot_id, global_index); + _projected_columns.push_back(std::move(column)); + } + RETURN_IF_ERROR(table_reader.validate_projected_columns(build_context)); + return Status::OK(); +} + +Status FileScannerV2::_build_default_expr(const TFileScanSlotInfo& slot_info, + VExprContextSPtr* ctx) const { + DORIS_CHECK(ctx != nullptr); + if (slot_info.__isset.default_value_expr && !slot_info.default_value_expr.nodes.empty()) { + return VExpr::create_expr_tree(slot_info.default_value_expr, *ctx); + } + + if (_params->__isset.default_value_of_src_slot) { + const auto it = _params->default_value_of_src_slot.find(slot_info.slot_id); + if (it != _params->default_value_of_src_slot.end() && !it->second.nodes.empty()) { + return VExpr::create_expr_tree(it->second, *ctx); + } + } + return Status::OK(); +} + +format::ColumnDefinition FileScannerV2::_build_table_column(const SlotDescriptor* slot_desc) { + DORIS_CHECK(slot_desc != nullptr); + format::ColumnDefinition column; + // TODO(gabriel): why always BY_NAME here? + column.identifier = Field::create_field<TYPE_STRING>(slot_desc->col_name()); + column.name = slot_desc->col_name(); + column.type = slot_desc->get_data_type_ptr(); + return column; +} + +Status FileScannerV2::_build_table_column_predicates( + format::TableColumnPredicates* predicates) const { + DORIS_CHECK(predicates != nullptr); + predicates->clear(); + const auto& slot_predicates = _local_state->cast<FileScanLocalState>()._slot_id_to_predicates; + for (const auto& [slot_id, slot_predicate_list] : slot_predicates) { + const auto it = _slot_id_to_desc.find(slot_id); + if (it == _slot_id_to_desc.end()) { + continue; + } + const auto global_index_it = _slot_id_to_global_index.find(slot_id); + if (global_index_it == _slot_id_to_global_index.end()) { + continue; + } + (*predicates)[global_index_it->second] = slot_predicate_list; + } + return Status::OK(); +} + +Status FileScannerV2::_build_table_conjuncts(VExprContextSPtrs* conjuncts) const { + DORIS_CHECK(conjuncts != nullptr); + conjuncts->clear(); + conjuncts->reserve(_conjuncts.size()); Review Comment: 这里为啥拿到conjuncts 之后要rewrite 一下？ 为啥rewrite 是在每个scanner 都rewrite 一次，而不是file scan operator rewrite 一次? -- This is an automated message from the Apache Git Service. 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