ClickHouse/dbms/src/IO/WriteBufferFromHDFS.h
2019-01-18 13:57:00 +03:00

32 lines
702 B
C++

#pragma once
#include <Common/config.h>
#if USE_HDFS
#include <IO/WriteBuffer.h>
#include <IO/BufferWithOwnMemory.h>
#include <string>
#include <memory>
namespace DB
{
/** Accepts HDFS path to file and opens it.
* Closes file by himself (thus "owns" a file descriptor).
*/
class WriteBufferFromHDFS : public BufferWithOwnMemory<WriteBuffer>
{
struct WriteBufferFromHDFSImpl;
std::unique_ptr<WriteBufferFromHDFSImpl> impl;
public:
WriteBufferFromHDFS(const std::string & hdfs_name_, size_t buf_size = DBMS_DEFAULT_BUFFER_SIZE);
WriteBufferFromHDFS(WriteBufferFromHDFS &&) = default;
void nextImpl() override;
~WriteBufferFromHDFS() override;
void sync();
};
}
#endif