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[FEAT MERGE]adaptive cost model

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This commit is contained in:
zzg19950727
2024-02-07 11:01:37 +00:00
committed by ob-robot
parent 1ee1ad37e4
commit 9a22f3ea88
85 changed files with 21899 additions and 18832 deletions
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14
src/sql/optimizer/ob_log_set.cpp
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@ -460,22 +460,24 @@ int ObLogSet::do_re_est_cost(EstimateCostInfo &param, double &card, double &op_c
double tmp_card = 0.0;
double child_cost = 0.0;
ObSEArray<ObBasicCostInfo, 4> cost_infos;
ObOptEstCost::MODEL_TYPE model_type = ObOptEstCost::MODEL_TYPE::NORMAL_MODEL;
const ObSelectStmt *stmt = dynamic_cast<const ObSelectStmt*>(get_stmt());
if (OB_ISNULL(stmt) || OB_ISNULL(get_plan())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else if (OB_FALSE_IT(model_type = get_plan()->get_optimizer_context().get_cost_model_type())) {
} else if (OB_FAIL(get_re_est_cost_infos(param, cost_infos, child_cost, tmp_card))) {
LOG_WARN("failed to get re est cost infos", K(ret));
} else if (is_recursive_union() || !is_set_distinct()) {
ObCostMergeSetInfo cost_info(cost_infos, get_set_op(), stmt->get_select_item_size());
if (OB_FAIL(ObOptEstCost::cost_union_all(cost_info, op_cost, model_type))) {
if (OB_FAIL(ObOptEstCost::cost_union_all(cost_info,
op_cost,
get_plan()->get_optimizer_context()))) {
LOG_WARN("estimate cost of SET operator failed", K(ret));
}
} else if (MERGE_SET == set_algo_) {
ObCostMergeSetInfo cost_info(cost_infos, get_set_op(), stmt->get_select_item_size());
if (OB_FAIL(ObOptEstCost::cost_merge_set(cost_info, op_cost, model_type))) {
if (OB_FAIL(ObOptEstCost::cost_merge_set(cost_info,
op_cost,
get_plan()->get_optimizer_context()))) {
LOG_WARN("estimate cost of SET operator failed", K(ret));
}
} else if (HASH_SET == set_algo_) {
@ -490,7 +492,9 @@ int ObLogSet::do_re_est_cost(EstimateCostInfo &param, double &card, double &op_c
cost_infos.at(1).rows_, cost_infos.at(1).width_,
get_set_op(), select_exprs,
NULL, NULL /* no need for hash set*/ );
if (OB_FAIL(ObOptEstCost::cost_hash_set(hash_cost_info, op_cost, model_type))) {
if (OB_FAIL(ObOptEstCost::cost_hash_set(hash_cost_info,
op_cost,
get_plan()->get_optimizer_context()))) {
LOG_WARN("Fail to calcuate hash set cost", K(ret));
}
}