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Add retry in direct load for read/write tmp file

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This commit is contained in:
obdev
2024-02-10 11:41:17 +00:00
committed by ob-robot
parent d0c4e5d175
commit 0e26b1f0e1
5 changed files with 201 additions and 118 deletions
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6
src/storage/direct_load/ob_direct_load_data_block_reader.h
View File

@ -191,10 +191,8 @@ int ObDirectLoadDataBlockReader<Header, T>::read_next_buffer()
buf_size_ = data_size;
// read buffer
const int64_t read_size = MIN(buf_capacity_ - buf_size_, read_size_);
if (OB_FAIL(file_io_handle_.aio_pread(buf_ + buf_size_, read_size, offset_))) {
STORAGE_LOG(WARN, "fail to do aio read from tmp file", KR(ret));
} else if (OB_FAIL(file_io_handle_.wait())) {
STORAGE_LOG(WARN, "fail to wait io finish", KR(ret), K(io_timeout_ms_));
if (OB_FAIL(file_io_handle_.pread(buf_ + buf_size_, read_size, offset_))) {
STORAGE_LOG(WARN, "fail to do pread from tmp file", KR(ret));
} else {
buf_size_ += read_size;
offset_ += read_size;

4
src/storage/direct_load/ob_direct_load_data_block_writer.h
View File

@ -216,7 +216,7 @@ int ObDirectLoadDataBlockWriter<Header, T>::flush_buffer()
int64_t buf_size = 0;
if (OB_FAIL(data_block_writer_.build_data_block(buf, buf_size))) {
STORAGE_LOG(WARN, "fail to build data block", KR(ret));
} else if (OB_FAIL(file_io_handle_.aio_write(buf, data_block_size_))) {
} else if (OB_FAIL(file_io_handle_.write(buf, data_block_size_))) {
STORAGE_LOG(WARN, "fail to do aio write tmp file", KR(ret));
} else if (nullptr != callback_ && OB_FAIL(callback_->write(buf, data_block_size_, offset_))) {
STORAGE_LOG(WARN, "fail to callback write", KR(ret));
@ -245,7 +245,7 @@ int ObDirectLoadDataBlockWriter<Header, T>::flush_extra_buffer(const T &item)
data_block_writer_.build_data_block(item, extra_buf_, extra_buf_size_, data_size))) {
STORAGE_LOG(WARN, "fail to build data block", KR(ret));
} else if (FALSE_IT(data_block_size = ALIGN_UP(data_size, DIO_ALIGN_SIZE))) {
} else if (OB_FAIL(file_io_handle_.aio_write(extra_buf_, data_block_size))) {
} else if (OB_FAIL(file_io_handle_.write(extra_buf_, data_block_size))) {
STORAGE_LOG(WARN, "fail to do aio write tmp file", KR(ret));
} else if (nullptr != callback_ &&
OB_FAIL(callback_->write(extra_buf_, data_block_size, offset_))) {

20
src/storage/direct_load/ob_direct_load_sstable_builder.cpp
View File

@ -410,10 +410,10 @@ int ObDirectLoadDataBlockWriter2::close()
LOG_WARN("ObDirectLoadDataBlockWriter2 is closed", KR(ret));
} else if (buf_pos_ > header_length_ && OB_FAIL(flush_buffer(buf_size_, buf_))) {
LOG_WARN("fail to flush buffer", KR(ret));
} else if (OB_FAIL(file_io_handle_.wait())) {
LOG_WARN("fail to wait io finish", KR(ret));
} else {
reset();
}
if (OB_SUCC(ret)) {
is_closed_ = true;
}
return ret;
@ -428,7 +428,7 @@ int ObDirectLoadDataBlockWriter2::flush_buffer(int64_t buf_size, char *buf)
if (OB_FAIL(header_.serialize(buf, buf_size, pos))) {
LOG_WARN("fail to serialize data block header", KR(ret), K(buf_size), KP(buf_), K(pos));
} else {
if (OB_FAIL(file_io_handle_.aio_write(buf, buf_size))) {
if (OB_FAIL(file_io_handle_.write(buf, buf_size))) {
LOG_WARN("fail to do aio write data file", KR(ret));
} else {
ObDirectLoadIndexBlockItem item;
@ -560,7 +560,7 @@ int ObDirectLoadIndexBlockWriter::flush_buffer()
if (OB_FAIL(header_.serialize(buf_, buf_size_, pos))) {
LOG_WARN("fail to serialize data block header", KR(ret), K(buf_size_), K(pos), KP(buf_));
} else {
if (OB_FAIL(file_io_handle_.aio_write(buf_, buf_size_))) {
if (OB_FAIL(file_io_handle_.write(buf_, buf_size_))) {
LOG_WARN("fail to do aio write index file", KR(ret));
} else {
header_.start_offset_ = offset_;
@ -584,10 +584,10 @@ int ObDirectLoadIndexBlockWriter::close()
LOG_WARN("ObDirectLoadIndexBlockWriter is closed", KR(ret));
} else if (buf_pos_ > header_length_ && OB_FAIL(flush_buffer())) {
LOG_WARN("fail to flush buffer", KR(ret));
} else if (OB_FAIL(file_io_handle_.wait())) {
LOG_WARN("fail to wait io finish", KR(ret));
} else {
reset();
}
if (OB_SUCC(ret)) {
is_closed_ = true;
}
return ret;
@ -667,13 +667,9 @@ int ObDirectLoadIndexBlockReader::read_buffer(int64_t idx)
int ret = OB_SUCCESS;
uint64_t offset = 0;
offset = buf_size_ * idx;
if (OB_FAIL(file_io_handle_.aio_pread(buf_, buf_size_, offset))) {
if (OB_FAIL(file_io_handle_.pread(buf_, buf_size_, offset))) {
if (OB_UNLIKELY(OB_ITER_END != ret)) {
LOG_WARN("fail to do aio read from index file", KR(ret));
}
} else {
if (OB_FAIL(file_io_handle_.wait())) {
LOG_WARN("fail to wait io finish", KR(ret));
LOG_WARN("fail to do pread from index file", KR(ret));
}
}
return ret;

253
src/storage/direct_load/ob_direct_load_tmp_file.cpp
View File

@ -168,6 +168,7 @@ int ObDirectLoadTmpFilesHandle::get_file(int64_t idx,
*/
ObDirectLoadTmpFileIOHandle::ObDirectLoadTmpFileIOHandle()
: tmp_file_(nullptr), is_cancel_(false)
{
}
@ -178,31 +179,96 @@ ObDirectLoadTmpFileIOHandle::~ObDirectLoadTmpFileIOHandle()
void ObDirectLoadTmpFileIOHandle::reset()
{
tmp_file_ = nullptr;
file_handle_.reset();
io_info_.reset();
file_io_handle_.reset();
is_cancel_ = false;
}
int ObDirectLoadTmpFileIOHandle::open(const ObDirectLoadTmpFileHandle &file_handle)
{
int ret = OB_SUCCESS;
ObDirectLoadTmpFile *tmp_file = file_handle.get_file();
int64_t file_size = 0;
if (OB_UNLIKELY(!file_handle.is_valid())) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), K(file_handle));
} else if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.get_tmp_file_size(tmp_file->get_file_id().fd_,
file_size))) {
LOG_WARN("fail to get tmp file size", KR(ret), KPC(tmp_file));
} else if (OB_UNLIKELY(file_size != tmp_file->get_file_size())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected file size", KR(ret), K(file_size), KPC(tmp_file));
} else {
reset();
if (OB_FAIL(file_handle_.assign(file_handle))) {
LOG_WARN("fail to assign file handle", KR(ret));
} else {
tmp_file_ = tmp_file;
io_info_.tenant_id_ = MTL_ID();
io_info_.dir_id_ = file_handle_.get_file()->get_file_id().dir_id_;
io_info_.fd_ = file_handle_.get_file()->get_file_id().fd_;
io_info_.dir_id_ = tmp_file_->get_file_id().dir_id_;
io_info_.fd_ = tmp_file_->get_file_id().fd_;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_timeout_ms_ = GCONF._data_storage_io_timeout / 1000L;
}
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::aio_read(char *buf, int64_t size)
int ObDirectLoadTmpFileIOHandle::check_status()
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(is_cancel_)) {
ret = OB_CANCELED;
LOG_WARN("tmp file io canceled", KR(ret));
} else if (OB_UNLIKELY(THIS_WORKER.is_timeout())) {
ret = OB_TIMEOUT;
LOG_WARN("worker timeout", KR(ret), K(THIS_WORKER.get_timeout_ts()));
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::pread(char *buf, int64_t size, int64_t offset)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_valid())) {
ret = OB_FILE_NOT_EXIST;
LOG_WARN("tmp file not set", KR(ret));
} else if (OB_UNLIKELY(nullptr == buf || size <= 0 || offset < 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size), K(offset));
} else if (OB_UNLIKELY(offset + size > tmp_file_->get_file_size())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected read out of file size", KR(ret), KPC_(tmp_file), K(size), K(offset));
} else {
int64_t retry_cnt = 0;
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_DATA_READ);
while (OB_SUCC(ret)) {
if (OB_FAIL(check_status())) {
LOG_WARN("fail to check status", KR(ret));
} else if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.pread(io_info_, offset, file_io_handle_))) {
LOG_WARN("fail to do pread from tmp file", KR(ret), K_(io_info), K(offset));
if (OB_LIKELY(is_retry_err(ret))) {
if (++retry_cnt <= MAX_RETRY_CNT) {
ret = OB_SUCCESS;
LOG_INFO("retry pread tmp file", K(retry_cnt), K_(io_info), K(size), K(offset));
}
} else if (OB_ITER_END == ret) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected read out of file size", KR(ret), K_(io_info), K(size), K(offset));
}
} else {
break;
}
}
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::write(char *buf, int64_t size)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_valid())) {
@ -212,13 +278,40 @@ int ObDirectLoadTmpFileIOHandle::aio_read(char *buf, int64_t size)
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size));
} else {
io_info_.size_ = size;
int64_t retry_cnt = 0;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_DATA_READ);
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_read(io_info_, file_io_handle_))) {
if (OB_UNLIKELY(OB_ITER_END != ret)) {
LOG_WARN("fail to do aio read from tmp file", KR(ret), K_(io_info));
io_info_.size_ = size;
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_INDEX_BUILD_WRITE);
while (OB_SUCC(ret)) {
if (OB_FAIL(check_status())) {
LOG_WARN("fail to check status", KR(ret));
}
// TODO(suzhi.yt): 先保留原来的调用, aio_write提交成功就相当于写成功了
else if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_write(io_info_, file_io_handle_))) {
LOG_WARN("fail to do aio write to tmp file", KR(ret), K_(io_info));
if (OB_LIKELY(is_retry_err(ret))) {
if (++retry_cnt <= MAX_RETRY_CNT) {
ret = OB_SUCCESS;
int64_t new_file_size = 0;
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.get_tmp_file_size(tmp_file_->get_file_id().fd_,
new_file_size))) {
LOG_WARN("fail to get tmp file size", KR(ret), KPC_(tmp_file));
} else {
const int64_t write_size = new_file_size - tmp_file_->get_file_size();
tmp_file_->inc_file_size(write_size);
io_info_.buf_ += write_size;
io_info_.size_ -= write_size;
if (io_info_.size_ > 0) {
LOG_INFO("retry aio write tmp file", K(retry_cnt), K_(io_info));
} else {
break;
}
}
}
}
} else {
tmp_file_->inc_file_size(io_info_.size_);
break;
}
}
}
@ -234,66 +327,30 @@ int ObDirectLoadTmpFileIOHandle::aio_pread(char *buf, int64_t size, int64_t offs
} else if (OB_UNLIKELY(nullptr == buf || size <= 0 || offset < 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size), K(offset));
} else if (OB_UNLIKELY(offset + size > tmp_file_->get_file_size())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected read out of file size", KR(ret), KPC_(tmp_file), K(size), K(offset));
} else {
int64_t retry_cnt = 0;
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_DATA_READ);
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_pread(io_info_, offset, file_io_handle_))) {
if (OB_UNLIKELY(OB_ITER_END != ret)) {
while (OB_SUCC(ret)) {
if (OB_FAIL(check_status())) {
LOG_WARN("fail to check status", KR(ret));
} else if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_pread(io_info_, offset, file_io_handle_))) {
LOG_WARN("fail to do aio pread from tmp file", KR(ret), K_(io_info), K(offset));
if (OB_LIKELY(is_retry_err(ret))) {
if (++retry_cnt <= MAX_RETRY_CNT) {
ret = OB_SUCCESS;
LOG_INFO("retry aio pread tmp file", K(retry_cnt), K_(io_info), K(offset));
}
} else if (OB_ITER_END == ret) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpected read out of file size", KR(ret), KPC_(tmp_file), K(size), K(offset));
}
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::read(char *buf, int64_t &size)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_valid())) {
ret = OB_FILE_NOT_EXIST;
LOG_WARN("tmp file not set", KR(ret));
} else if (OB_UNLIKELY(nullptr == buf || size <= 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size));
} else {
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_DATA_READ);
io_info_.io_timeout_ms_ = GCONF._data_storage_io_timeout / 1000L;
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.read(io_info_, file_io_handle_))) {
if (OB_UNLIKELY(OB_ITER_END != ret)) {
LOG_WARN("fail to do read from tmp file", KR(ret), K_(io_info));
} else {
size = file_io_handle_.get_data_size();
}
}
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::pread(char *buf, int64_t &size, int64_t offset)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_valid())) {
ret = OB_FILE_NOT_EXIST;
LOG_WARN("tmp file not set", KR(ret));
} else if (OB_UNLIKELY(nullptr == buf || size <= 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size));
} else {
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_DATA_READ);
io_info_.io_timeout_ms_ = GCONF._data_storage_io_timeout / 1000L;
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.pread(io_info_, offset, file_io_handle_))) {
if (OB_UNLIKELY(OB_ITER_END != ret)) {
LOG_WARN("fail to do pread from tmp file", KR(ret), K_(io_info), K(offset));
} else {
size = file_io_handle_.get_data_size();
break;
}
}
}
@ -310,34 +367,41 @@ int ObDirectLoadTmpFileIOHandle::aio_write(char *buf, int64_t size)
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size));
} else {
int64_t retry_cnt = 0;
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_INDEX_BUILD_WRITE);
io_info_.io_timeout_ms_ = GCONF._data_storage_io_timeout / 1000L;
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_write(io_info_, file_io_handle_))) {
while (OB_SUCC(ret)) {
if (OB_FAIL(check_status())) {
LOG_WARN("fail to check status", KR(ret));
}
// aio_write提交成功就相当于写成功了
else if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.aio_write(io_info_, file_io_handle_))) {
LOG_WARN("fail to do aio write to tmp file", KR(ret), K_(io_info));
}
}
return ret;
}
int ObDirectLoadTmpFileIOHandle::write(char *buf, int64_t size)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_valid())) {
ret = OB_FILE_NOT_EXIST;
LOG_WARN("tmp file not set", KR(ret));
} else if (OB_UNLIKELY(nullptr == buf || size <= 0)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid args", KR(ret), KP(buf), K(size));
if (OB_LIKELY(is_retry_err(ret))) {
if (++retry_cnt <= MAX_RETRY_CNT) {
ret = OB_SUCCESS;
int64_t new_file_size = 0;
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.get_tmp_file_size(tmp_file_->get_file_id().fd_,
new_file_size))) {
LOG_WARN("fail to get tmp file size", KR(ret), KPC_(tmp_file));
} else {
io_info_.size_ = size;
io_info_.buf_ = buf;
io_info_.io_desc_.set_group_id(ObIOModule::DIRECT_LOAD_IO);
io_info_.io_desc_.set_wait_event(ObWaitEventIds::DB_FILE_INDEX_BUILD_WRITE);
if (OB_FAIL(FILE_MANAGER_INSTANCE_V2.write(io_info_))) {
LOG_WARN("fail to do write to tmp file", KR(ret), K_(io_info));
const int64_t write_size = new_file_size - tmp_file_->get_file_size();
tmp_file_->inc_file_size(write_size);
io_info_.buf_ += write_size;
io_info_.size_ -= write_size;
if (io_info_.size_ > 0) {
LOG_INFO("retry aio write tmp file", K(retry_cnt), K_(io_info));
} else {
break;
}
}
}
}
} else {
tmp_file_->inc_file_size(io_info_.size_);
break;
}
}
}
return ret;
@ -346,8 +410,27 @@ int ObDirectLoadTmpFileIOHandle::write(char *buf, int64_t size)
int ObDirectLoadTmpFileIOHandle::wait()
{
int ret = OB_SUCCESS;
if (OB_FAIL(file_io_handle_.wait())) {
if (OB_UNLIKELY(!is_valid())) {
ret = OB_FILE_NOT_EXIST;
LOG_WARN("tmp file not set", KR(ret));
} else {
int64_t retry_cnt = 0;
while (OB_SUCC(ret)) {
if (OB_FAIL(check_status())) {
LOG_WARN("fail to check status", KR(ret));
} else if (OB_FAIL(file_io_handle_.wait())) {
LOG_WARN("fail to wait io finish", KR(ret));
if (OB_LIKELY(is_retry_err(ret))) {
if (++retry_cnt <= MAX_RETRY_CNT) {
ret = OB_SUCCESS;
LOG_INFO("retry wait tmp file io finish", K(retry_cnt), KPC_(tmp_file),
K_(file_io_handle));
}
}
} else {
break;
}
}
}
return ret;
}

26
src/storage/direct_load/ob_direct_load_tmp_file.h
View File

@ -39,7 +39,7 @@ class ObDirectLoadTmpFile
{
public:
ObDirectLoadTmpFile(ObDirectLoadTmpFileManager *file_mgr, const ObDirectLoadTmpFileId &file_id)
: file_mgr_(file_mgr), file_id_(file_id), ref_count_(0)
: file_mgr_(file_mgr), file_id_(file_id), file_size_(0), ref_count_(0)
{
}
bool is_valid() const { return nullptr != file_mgr_ && file_id_.is_valid(); }
@ -48,10 +48,13 @@ public:
int64_t dec_ref_count() { return ATOMIC_AAF(&ref_count_, -1); }
ObDirectLoadTmpFileManager *get_file_mgr() const { return file_mgr_; }
const ObDirectLoadTmpFileId &get_file_id() const { return file_id_; }
TO_STRING_KV(KP_(file_mgr), K_(file_id), K_(ref_count));
int64_t get_file_size() const { return file_size_; }
void inc_file_size(int64_t size) { file_size_ += size; }
TO_STRING_KV(KP_(file_mgr), K_(file_id), K_(file_size), K_(ref_count));
private:
ObDirectLoadTmpFileManager *const file_mgr_;
const ObDirectLoadTmpFileId file_id_;
int64_t file_size_;
int64_t ref_count_ CACHE_ALIGNED;
DISABLE_COPY_ASSIGN(ObDirectLoadTmpFile);
};
@ -94,28 +97,31 @@ private:
class ObDirectLoadTmpFileIOHandle final
{
static const uint64_t MAX_RETRY_CNT = 3;
public:
ObDirectLoadTmpFileIOHandle();
~ObDirectLoadTmpFileIOHandle();
void reset();
bool is_valid() const { return file_handle_.is_valid(); }
int open(const ObDirectLoadTmpFileHandle &file_handle);
int aio_read(char *buf, int64_t size);
int aio_pread(char *buf, int64_t size, int64_t offset);
int read(char *buf, int64_t &size);
int pread(char *buf, int64_t &size, int64_t offset);
int aio_write(char *buf, int64_t size);
int pread(char *buf, int64_t size, int64_t offset);
int write(char *buf, int64_t size);
int aio_pread(char *buf, int64_t size, int64_t offset);
int aio_write(char *buf, int64_t size);
int wait();
// for aio read to get real read size when ret = OB_ITER_END
OB_INLINE int64_t get_data_size() { return file_io_handle_.get_data_size(); }
OB_INLINE void cancel() { is_cancel_ = true; }
static int seek(const ObDirectLoadTmpFileHandle &file_handle, int64_t offset, int whence);
static int sync(const ObDirectLoadTmpFileHandle &file_handle, int64_t timeout_ms);
TO_STRING_KV(K_(file_handle));
static bool is_retry_err(int ret_code) { return OB_TIMEOUT == ret_code; }
TO_STRING_KV(K_(file_handle), K_(io_info));
private:
int check_status();
private:
ObDirectLoadTmpFileHandle file_handle_;
ObDirectLoadTmpFile *tmp_file_;
blocksstable::ObTmpFileIOInfo io_info_;
blocksstable::ObTmpFileIOHandle file_io_handle_;
bool is_cancel_;
DISABLE_COPY_ASSIGN(ObDirectLoadTmpFileIOHandle);
};