chenlinzhong commented on code in PR #8765:
URL: https://github.com/apache/incubator-doris/pull/8765#discussion_r846931636
##########
be/src/runtime/export_sink.cpp:
##########
@@ -96,6 +97,13 @@ Status ExportSink::send(RuntimeState* state, RowBatch*
batch) {
int num_rows = batch->num_rows();
// we send at most 1024 rows at a time
int batch_send_rows = num_rows > 1024 ? 1024 : num_rows;
+ if (!_send_header && _t_export_sink.header.size() > 0) {
+ size_t written_len = 0;
+ RETURN_IF_ERROR(
+ _file_writer->write(reinterpret_cast<const
uint8_t*>(_t_export_sink.header.c_str()),
+ _t_export_sink.header.size(),
&written_len));
+ _send_header = true;
Review Comment:
ok
##########
be/src/runtime/export_sink.h:
##########
@@ -77,6 +77,7 @@ class ExportSink : public DataSink {
RuntimeProfile::Counter* _bytes_written_counter;
RuntimeProfile::Counter* _rows_written_counter;
RuntimeProfile::Counter* _write_timer;
+ bool _send_header;
Review Comment:
ok
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