bdc8c98008
Support hdfs in select outfile clause without broker.
This PR implement a HDFS writer in BE which is used to write HDFS file directly without using broker.
Also the hdfs outfile clause syntax check has been added in FE.
The syntax:
```
select * from xx into outfile "hdfs://user/outfile_" format as csv
properties ("hdfs.fs.dafultFS" = "xxx", "hdfs.hdfs_user" = "xxx");
```
Note that all hdfs configurations need to carry a prefix `hdfs.`.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
// 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.
|
|
|
|
#pragma once
|
|
|
|
#include <hdfs/hdfs.h>
|
|
|
|
#include <map>
|
|
#include <string>
|
|
|
|
#include "exec/file_writer.h"
|
|
|
|
namespace doris {
|
|
class HDFSWriter : public FileWriter {
|
|
|
|
public:
|
|
HDFSWriter(std::map<std::string, std::string>& properties, const std::string& path);
|
|
~HDFSWriter();
|
|
Status open() override;
|
|
|
|
// Writes up to count bytes from the buffer pointed buf to the file.
|
|
// NOTE: the number of bytes written may be less than count if.
|
|
Status write(const uint8_t* buf, size_t buf_len, size_t* written_len) override;
|
|
|
|
Status close() override;
|
|
|
|
private:
|
|
Status _connect();
|
|
Status _parse_properties(std::map<std::string, std::string>& prop);
|
|
|
|
std::map<std::string, std::string> _properties;
|
|
std::string _user = "";
|
|
std::string _namenode = "";
|
|
std::string _path = "";
|
|
std::string _kerb_principal = "";
|
|
std::string _kerb_ticket_cache_path = "";
|
|
std::string _token = "";
|
|
hdfsFS _hdfs_fs = nullptr;
|
|
hdfsFile _hdfs_file = nullptr;
|
|
bool _closed = false;
|
|
};
|
|
|
|
} |