yiguolei commented on code in PR #39927:
URL: https://github.com/apache/doris/pull/39927#discussion_r1731238629
##########
be/src/pipeline/exec/scan_operator.cpp:
##########
@@ -1423,6 +1417,31 @@ Status ScanOperatorX<LocalStateType>::init(const
TPlanNode& tnode, RuntimeState*
if (tnode.__isset.topn_filter_source_node_ids) {
topn_filter_source_node_ids = tnode.topn_filter_source_node_ids;
}
+
+ // The first branch is kept for compatibility with the old version of the
FE
+ if
(!state->query_options().__isset.enable_adaptive_pipeline_task_serial_read_on_limit)
{
+ if (!tnode.__isset.conjuncts || tnode.conjuncts.empty()) {
+ // Which means the request could be fullfilled in a single segment
iterator request.
+ if (tnode.limit > 0 && tnode.limit <= 8192) {
+ _should_run_serial = true;
+ }
+ }
+ } else {
+ if
(state->query_options().enable_adaptive_pipeline_task_serial_read_on_limit) {
+ int32_t adaptive_pipeline_task_serial_read_on_limit = 8192;
Review Comment:
所有访问thrift 里的字段，都要先判断isset，然后再get 里面的值
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