morningman commented on a change in pull request #3584: URL: https://github.com/apache/incubator-doris/pull/3584#discussion_r427017242
########## File path: be/src/runtime/file_result_writer.cpp ########## @@ -0,0 +1,319 @@ +// 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 "runtime/file_result_writer.h" + +#include "exec/broker_writer.h" +#include "exec/local_file_writer.h" +#include "exec/parquet_writer.h" +#include "exprs/expr.h" +#include "runtime/primitive_type.h" +#include "runtime/row_batch.h" +#include "runtime/tuple_row.h" +#include "runtime/runtime_state.h" +#include "util/types.h" +#include "util/date_func.h" +#include "util/uid_util.h" + +#include "gen_cpp/PaloInternalService_types.h" + +namespace doris { + +const size_t FileResultWriter::OUTSTREAM_BUFFER_SIZE_BYTES = 1024 * 1024; + +FileResultWriter::FileResultWriter( + const ResultFileOptions* file_opts, + const std::vector<ExprContext*>& output_expr_ctxs, + RuntimeProfile* parent_profile) : + _file_opts(file_opts), + _output_expr_ctxs(output_expr_ctxs), + _parent_profile(parent_profile) { +} + +FileResultWriter::~FileResultWriter() { + close(); +} + +Status FileResultWriter::init(RuntimeState* state) { + _state = state; + _init_profile(); + + RETURN_IF_ERROR(_create_file_writer()); + return Status::OK(); +} + +void FileResultWriter::_init_profile() { + RuntimeProfile* profile = _parent_profile->create_child("FileResultWriter", true, true); + _append_row_batch_timer = ADD_TIMER(profile, "AppendBatchTime"); + _convert_tuple_timer = ADD_CHILD_TIMER(profile, "TupleConvertTime", "AppendBatchTime"); + _file_write_timer = ADD_CHILD_TIMER(profile, "FileWriteTime", "AppendBatchTime"); + _writer_close_timer = ADD_TIMER(profile, "FileWriterCloseTime"); + _written_rows_counter = ADD_COUNTER(profile, "NumWrittenRows", TUnit::UNIT); + _written_data_bytes = ADD_COUNTER(profile, "WrittenDataBytes", TUnit::BYTES); +} + +Status FileResultWriter::_create_file_writer() { + std::string file_name = _get_next_file_name(); + if (_file_opts->is_local_file) { + _file_writer = new LocalFileWriter(file_name, 0 /* start offset */); + } else { + _file_writer = new BrokerWriter(_state->exec_env(), + _file_opts->broker_addresses, + _file_opts->broker_properties, + file_name, + 0 /*start offset*/); + } + RETURN_IF_ERROR(_file_writer->open()); + + switch (_file_opts->file_format) { + case TFileFormatType::FORMAT_CSV_PLAIN: + // just use file writer is enough + break; + case TFileFormatType::FORMAT_PARQUET: + _parquet_writer = new ParquetWriterWrapper(_file_writer, _output_expr_ctxs); + break; + default: + return Status::InternalError(strings::Substitute("unsupport file format: $0", _file_opts->file_format)); + } + LOG(INFO) << "create file for exporting query result. file name: " << file_name + << ". query id: " << print_id(_state->query_id()); + return Status::OK(); +} + +// file name format as: my_prefix_0.csv +std::string FileResultWriter::_get_next_file_name() { + std::stringstream ss; + ss << _file_opts->file_path << "_" << (_file_idx++) << "." << _file_format_to_name(); + return ss.str(); +} + +std::string FileResultWriter::_file_format_to_name() { + switch (_file_opts->file_format) { + case TFileFormatType::FORMAT_CSV_PLAIN: + return "csv"; + case TFileFormatType::FORMAT_PARQUET: + return "parquet"; + default: + return "unknown"; + } +} + +Status FileResultWriter::append_row_batch(const RowBatch* batch) { + if (NULL == batch || 0 == batch->num_rows()) { Review comment: Modified ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
