convert reference to pointer

be/src/exec/broker_reader.cpp

@@ -122,7 +122,7 @@ Status BrokerReader::open() {
 }
 
 //not support
-Status BrokerReader::read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) {
+Status BrokerReader::read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) {
     return Status::NotSupported("Not support");
 }
 

be/src/exec/broker_reader.h

@@ -50,7 +50,7 @@ class BrokerReader : public FileReader {
     virtual Status read(uint8_t* buf, size_t* buf_len, bool* eof) override;
     virtual Status readat(int64_t position, int64_t nbytes, int64_t* bytes_read,
                           void* out) override;
-    virtual Status read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) override;
+    virtual Status read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) override;
     virtual int64_t size() override;
     virtual Status seek(int64_t position) override;
     virtual Status tell(int64_t* position) override;

be/src/exec/buffered_reader.cpp

@@ -50,7 +50,7 @@ Status BufferedReader::open() {
 }
 
 //not support
-Status BufferedReader::read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) {
+Status BufferedReader::read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) {
     return Status::NotSupported("Not support");
 
 }

be/src/exec/buffered_reader.h

@@ -41,7 +41,7 @@ class BufferedReader : public FileReader {
     virtual Status read(uint8_t* buf, size_t* buf_len, bool* eof) override;
     virtual Status readat(int64_t position, int64_t nbytes, int64_t* bytes_read,
                           void* out) override;
-    virtual Status read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) override;
+    virtual Status read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) override;
     virtual int64_t size() override;
     virtual Status seek(int64_t position) override;
     virtual Status tell(int64_t* position) override;

be/src/exec/file_reader.h

@@ -41,7 +41,7 @@ class FileReader {
      * if read eof then return Status::OK and length is set 0 and buf is set NULL,
      *  other return readed bytes.
      */
-    virtual Status read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) = 0;
+    virtual Status read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) = 0;
     virtual int64_t size() = 0;
     virtual Status seek(int64_t position) = 0;
     virtual Status tell(int64_t* position) = 0;

be/src/exec/json_scanner.cpp

@@ -274,7 +274,7 @@ void JsonReader::_close() {
 Status JsonReader::_parse_json_doc(bool* eof) {
     std::unique_ptr<uint8_t[]> json_str; 
     size_t length = 0;
-    RETURN_IF_ERROR(_file_reader->read_one_message(json_str, &length));
+    RETURN_IF_ERROR(_file_reader->read_one_message(&json_str, &length));
     if (length == 0) {
         *eof = true;
         return Status::OK();

be/src/exec/local_file_reader.cpp

@@ -57,13 +57,13 @@ Status LocalFileReader::read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t
     bool eof;
     int64_t file_size = size() - _current_offset;
     if (file_size <= 0) {
-        buf.reset();
+        buf->reset();
         *length = 0;
         return Status::OK();
     }
     *length = file_size;
-    buf.reset(new uint8_t[file_size]);
-    read(buf.get(), length, &eof);
+    buf->reset(new uint8_t[file_size]);
+    read(buf->get(), length, &eof);
     return Status::OK();
 }
 

be/src/exec/local_file_reader.h

@@ -38,7 +38,7 @@ class LocalFileReader : public FileReader {
     virtual Status read(uint8_t* buf, size_t* buf_len, bool* eof) override;
     virtual Status readat(int64_t position, int64_t nbytes, int64_t* bytes_read,
                           void* out) override;
-    virtual Status read_one_message(std::unique_ptr<uint8_t[]>& buf, size_t* length) override;
+    virtual Status read_one_message(std::unique_ptr<uint8_t[]>* buf, size_t* length) override;
     virtual int64_t size() override;
     virtual Status seek(int64_t position) override;
     virtual Status tell(int64_t* position) override;

be/src/runtime/stream_load/stream_load_pipe.h

@@ -102,10 +102,10 @@ class StreamLoadPipe : public MessageBodySink, public FileReader {
         }
 
         // _total_length > 0, read the entire data
-        data.reset(new uint8_t[_total_length]);
+        data->reset(new uint8_t[_total_length]);
         *length = _total_length;
         bool eof = false;
-        Status st = read(data.get(), length, &eof);
+        Status st = read(data->get(), length, &eof);
         if (eof) {
             *length = 0;
         }
@@ -188,7 +188,7 @@ class StreamLoadPipe : public MessageBodySink, public FileReader {
 
 private:
     // read the next buffer from _buf_queue
-    Status _read_next_buffer(std::unique_ptr<uint8_t[]>& data, size_t* length) {
+    Status _read_next_buffer(std::unique_ptr<uint8_t[]>* data, size_t* length) {
         std::unique_lock<std::mutex> l(_lock);
         while (!_cancelled && !_finished && _buf_queue.empty()) {
             _get_cond.wait(l);
@@ -200,14 +200,14 @@ class StreamLoadPipe : public MessageBodySink, public FileReader {
         // finished
         if (_buf_queue.empty()) {
             DCHECK(_finished);
-            data.reset();
+            data->reset();
             *length = 0;
             return Status::OK();
         }
         auto buf = _buf_queue.front();
         *length = buf->remaining();
-        data.reset(new uint8_t[*length]);
-        buf->get_bytes((char*)(data.get()), *length);
+        data->reset(new uint8_t[*length]);
+        buf->get_bytes((char*)(data->get()), *length);
 
         _buf_queue.pop_front();
         _buffered_bytes -= buf->limit;