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[FEAT MERGE] support auto dop

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This commit is contained in:
obdev
2023-04-28 15:11:52 +00:00
committed by ob-robot
parent 642f1c7d84
commit b41dc0ebdd
106 changed files with 3815 additions and 2844 deletions
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14
src/sql/optimizer/ob_log_temp_table_access.cpp
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@ -90,12 +90,14 @@ int ObLogTempTableAccess::allocate_expr_post(ObAllocExprContext &ctx)
return ret;
}
int ObLogTempTableAccess::re_est_cost(EstimateCostInfo &param, double &card, double &cost)
int ObLogTempTableAccess::do_re_est_cost(EstimateCostInfo &param, double &card, double &op_cost, double &cost)
{
int ret = OB_SUCCESS;
card = get_card();
op_cost = get_op_cost();
cost = get_cost();
double selectivity = 1.0;
const int64_t parallel = param.need_parallel_;
if (OB_ISNULL(get_plan())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(get_plan()),K(ret));
@ -107,7 +109,7 @@ int ObLogTempTableAccess::re_est_cost(EstimateCostInfo &param, double &card, dou
LOG_WARN("failed to calculate selectivity", K(ret));
} else {
double read_card = card;
if (selectivity > 0 && selectivity < 1) {
if (selectivity > 0 && selectivity <= 1) {
read_card /= selectivity;
} else {
read_card = 0;
@ -128,15 +130,11 @@ int ObLogTempTableAccess::re_est_cost(EstimateCostInfo &param, double &card, dou
card = param.need_row_count_;
}
}
double per_dop_card = read_card / parallel_;
double per_dop_card = read_card / parallel;
ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
cost = ObOptEstCost::cost_read_materialized(per_dop_card, opt_ctx.get_cost_model_type()) +
ObOptEstCost::cost_quals(per_dop_card, get_filter_exprs(), opt_ctx.get_cost_model_type());
if (param.override_) {
set_op_cost(cost);
set_cost(cost);
set_card(card);
}
op_cost = cost;
}
return ret;
}