HappenLee commented on code in PR #17828:
URL: https://github.com/apache/doris/pull/17828#discussion_r1162307541
##########
be/src/runtime/buffer_control_block.cpp:
##########
@@ -119,8 +119,20 @@ Status
BufferControlBlock::add_batch(std::unique_ptr<TFetchDataResult>& result)
}
if (_waiting_rpc.empty()) {
+ // Merge result into batch to reduce rpc times
+ if (!_batch_queue.empty() &&
+ ((_batch_queue.back()->result_batch.rows.size() + num_rows) <
_buffer_limit) &&
+ !result->eos) {
+ std::vector<std::string>& back_rows =
_batch_queue.back()->result_batch.rows;
+ std::vector<std::string>& result_rows = result->result_batch.rows;
+ auto back_size = back_rows.size();
+ back_rows.resize(back_size + num_rows);
Review Comment:
should not resize
##########
be/src/runtime/buffer_control_block.cpp:
##########
@@ -119,8 +119,20 @@ Status
BufferControlBlock::add_batch(std::unique_ptr<TFetchDataResult>& result)
}
if (_waiting_rpc.empty()) {
+ // Merge result into batch to reduce rpc times
+ if (!_batch_queue.empty() &&
+ ((_batch_queue.back()->result_batch.rows.size() + num_rows) <
_buffer_limit) &&
+ !result->eos) {
+ std::vector<std::string>& back_rows =
_batch_queue.back()->result_batch.rows;
+ std::vector<std::string>& result_rows = result->result_batch.rows;
+ auto back_size = back_rows.size();
+ back_rows.resize(back_size + num_rows);
Review Comment:
should not resize
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