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[CP] fix calc nested loop join / spf cost bug

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This commit is contained in:
zzg19950727
2024-02-09 09:36:04 +00:00
committed by ob-robot
parent a335301e62
commit 8e71e218e6
3 changed files with 92 additions and 84 deletions
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10
src/sql/optimizer/ob_join_order.cpp
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@ -4068,13 +4068,10 @@ int ObJoinOrder::get_excluded_condition_exprs(ObIArray<ObRawExpr *> &excluded_co
double ObJoinOrder::calc_single_parallel_rows(double rows, int64_t parallel)
{
double ret = rows;
if (rows < parallel) {
parallel = rows;
if (parallel >= 1) {
ret = rows / parallel;
}
//at least one parallel
parallel = parallel < 1 ? 1: parallel;
ret = rows / parallel;
ret = ret < 1 ? 1 : ret;
return ret;
}
@ -6869,6 +6866,7 @@ int JoinPath::cost_nest_loop_join(int64_t join_parallel,
} else if (DistAlgo::DIST_BROADCAST_NONE == join_dist_algo_ ||
DistAlgo::DIST_ALL_NONE == join_dist_algo_) {
right_rows /= in_parallel;
left_rows = ObJoinOrder::calc_single_parallel_rows(left_rows, 1);
} else if (DistAlgo::DIST_NONE_BROADCAST == join_dist_algo_ ||
DistAlgo::DIST_NONE_ALL == join_dist_algo_) {
left_rows = ObJoinOrder::calc_single_parallel_rows(left_rows, in_parallel);