0d48a3961c
NOTE: This patch would modify all Backend's data. And this will cause a very long time to restart be. So if you want to interferer your product environment, you should upgrade backend one by one. 1. Refactoring be is to clarify the structure the codes. 2. Use unique id to indicate a rowset. Nameing rowset with tablet_id and version will lead to many conflicts among compaction, clone, restore. 3. Extract an rowset interface to encapsulate rowsets with different format.
108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <stdint.h>
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#include <string>
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#include <map>
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#include <arrow/api.h>
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#include <arrow/io/api.h>
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#include <arrow/io/file.h>
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#include <arrow/io/interfaces.h>
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#include <arrow/buffer.h>
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#include <parquet/api/reader.h>
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#include <parquet/api/writer.h>
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#include <parquet/arrow/reader.h>
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#include <parquet/arrow/writer.h>
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#include <parquet/exception.h>
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#include "common/status.h"
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#include "gen_cpp/Types_types.h"
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#include "gen_cpp/PaloBrokerService_types.h"
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#include "gen_cpp/PlanNodes_types.h"
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namespace doris {
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class ExecEnv;
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class TBrokerRangeDesc;
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class TNetworkAddress;
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class RuntimeState;
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class Tuple;
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class SlotDescriptor;
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class MemPool;
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class FileReader;
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class ParquetFile : public arrow::io::RandomAccessFile {
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public:
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ParquetFile(FileReader *file);
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virtual ~ParquetFile();
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arrow::Status Read(int64_t nbytes, int64_t* bytes_read, void* buffer) override;
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arrow::Status ReadAt(int64_t position, int64_t nbytes, int64_t* bytes_read,
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void* out) override;
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arrow::Status GetSize(int64_t* size) override;
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arrow::Status Seek(int64_t position) override;
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arrow::Status Read(int64_t nbytes, std::shared_ptr<arrow::Buffer>* out) override;
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arrow::Status Tell(int64_t* position) const override;
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arrow::Status Close() override;
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bool closed() const override;
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private:
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FileReader *_file;
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};
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// Reader of broker parquet file
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class ParquetReaderWrap {
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public:
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ParquetReaderWrap(FileReader *file_reader);
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virtual ~ParquetReaderWrap();
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// Read
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Status read(Tuple* tuple, const std::vector<SlotDescriptor*>& tuple_slot_descs, MemPool* mem_pool, bool* eof);
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void close();
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Status size(int64_t* size);
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Status init_parquet_reader(const std::vector<SlotDescriptor*>& tuple_slot_descs);
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private:
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void fill_slot(Tuple* tuple, SlotDescriptor* slot_desc, MemPool* mem_pool, const uint8_t* value, int32_t len);
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Status column_indices(const std::vector<SlotDescriptor*>& tuple_slot_descs);
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Status set_field_null(Tuple* tuple, const SlotDescriptor* slot_desc);
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Status read_record_batch(const std::vector<SlotDescriptor*>& tuple_slot_descs, bool* eof);
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Status handle_timestamp(const std::shared_ptr<arrow::TimestampArray>& ts_array, uint8_t *buf, int32_t *wbtyes);
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private:
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parquet::ReaderProperties _properties;
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std::shared_ptr<ParquetFile> _parquet;
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// parquet file reader object
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std::shared_ptr<::arrow::RecordBatchReader> _rb_batch;
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std::shared_ptr<arrow::RecordBatch> _batch;
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std::unique_ptr<parquet::arrow::FileReader> _reader;
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std::shared_ptr<parquet::FileMetaData> _file_metadata;
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std::map<std::string, int> _map_column; // column-name <---> column-index
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std::vector<int> _parquet_column_ids;
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std::vector<arrow::Type::type> _parquet_column_type;
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int _total_groups; // groups in a parquet file
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int _current_group;
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int _rows_of_group; // rows in a group.
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int _current_line_of_group;
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};
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}
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