59017cebe6
1. Refactor the create method of hdfs reader & writer.
libhdfs3 does not support arm64. So we should not support hdfs reader & writer on arm64.
2. And micro for LowerUpperImpl
62 lines
2.1 KiB
C++
62 lines
2.1 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 <hdfs/hdfs.h>
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#include "exec/file_reader.h"
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#include "gen_cpp/PlanNodes_types.h"
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namespace doris {
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class HdfsFileReader : public FileReader {
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public:
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HdfsFileReader(const THdfsParams& hdfs_params, const std::string& path, int64_t start_offset);
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virtual ~HdfsFileReader();
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virtual Status open() override;
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// Read content to 'buf', 'buf_len' is the max size of this buffer.
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// Return ok when read success, and 'buf_len' is set to size of read content
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// If reach to end of file, the eof is set to true. meanwhile 'buf_len'
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// is set to zero.
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virtual Status read(uint8_t* buf, int64_t buf_len, int64_t* bytes_read, bool* eof) override;
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virtual Status readat(int64_t position, int64_t nbytes, int64_t* bytes_read,
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void* out) override;
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virtual Status read_one_message(std::unique_ptr<uint8_t[]>* buf, int64_t* length) override;
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virtual int64_t size() override;
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virtual Status seek(int64_t position) override;
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virtual Status tell(int64_t* position) override;
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virtual void close() override;
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virtual bool closed() override;
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private:
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Status connect();
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private:
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THdfsParams _hdfs_params;
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std::string _namenode;
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std::string _path;
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int64_t _current_offset;
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int64_t _file_size;
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hdfsFS _hdfs_fs;
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hdfsFile _hdfs_file;
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};
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} // namespace doris
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