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[FEAT MERGE]adaptive cost model

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This commit is contained in:
zzg19950727
2023-12-06 03:12:01 +00:00
committed by ob-robot
parent 6520c7b570
commit d70d986be9
85 changed files with 21899 additions and 18832 deletions
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2
src/sql/optimizer/ob_log_limit.cpp
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@ -117,7 +117,7 @@ int ObLogLimit::do_re_est_cost(EstimateCostInfo &param, double &card, double &op
if (OB_FAIL(child->re_est_cost(param, child_card, child_cost))) {
LOG_WARN("failed to re-est cost", K(ret));
} else {
op_cost = ObOptEstCost::cost_get_rows(child_card, opt_ctx.get_cost_model_type());
op_cost = ObOptEstCost::cost_get_rows(child_card, opt_ctx);
cost = op_cost + child_cost;
child_card = 0 <= limit_percent
? std::max(child_card * limit_percent / 100 - offset_count, 0.0)