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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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18
src/sql/optimizer/ob_log_distinct.cpp
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@ -136,7 +136,7 @@ int ObLogDistinct::est_cost()
} else if (OB_UNLIKELY(total_ndv_ < 0)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected total ndv", K(total_ndv_), K(ret));
} else if (OB_FAIL(inner_est_cost(child->get_card(), total_ndv_, distinct_cost))) {
} else if (OB_FAIL(inner_est_cost(get_parallel(), child->get_card(), total_ndv_, distinct_cost))) {
LOG_WARN("failed to est distinct cost", K(ret));
} else {
set_op_cost(distinct_cost);
@ -146,10 +146,9 @@ int ObLogDistinct::est_cost()
return ret;
}
int ObLogDistinct::re_est_cost(EstimateCostInfo &param, double &card, double &cost)
int ObLogDistinct::do_re_est_cost(EstimateCostInfo &param, double &card, double &op_cost, double &cost)
{
int ret = OB_SUCCESS;
double distinct_cost = 0.0;
ObLogicalOperator *child = NULL;
if (OB_ISNULL(child = get_child(ObLogicalOperator::first_child))) {
ret = OB_ERR_UNEXPECTED;
@ -161,6 +160,7 @@ int ObLogDistinct::re_est_cost(EstimateCostInfo &param, double &card, double &co
double child_card = child->get_card();
double child_cost = child->get_cost();
double child_ndv = total_ndv_;
const int64_t parallel = param.need_parallel_;
if (param.need_row_count_ >= 0 &&
child_card > 0 &&
total_ndv_ > 0 &&
@ -168,18 +168,17 @@ int ObLogDistinct::re_est_cost(EstimateCostInfo &param, double &card, double &co
param.need_row_count_ < total_ndv_) {
child_ndv = param.need_row_count_;
param.need_row_count_ = child_card * (1 - std::pow((1 - child_ndv / total_ndv_), total_ndv_ / child_card));
} else {
param.need_row_count_ = -1;
}
if (OB_FAIL(SMART_CALL(child->re_est_cost(param, child_card, child_cost)))) {
LOG_WARN("failed to re est child cost", K(ret));
} else if (OB_FAIL(inner_est_cost(child_card, child_ndv, distinct_cost))) {
} else if (OB_FAIL(inner_est_cost(parallel, child_card, child_ndv, op_cost))) {
LOG_WARN("failed to est distinct cost", K(ret));
} else {
cost = child_cost + distinct_cost;
cost = child_cost + op_cost;
card = child_ndv;
if (param.override_) {
set_op_cost(distinct_cost);
set_cost(cost);
set_card(card);
total_ndv_ = child_ndv;
}
}
@ -187,10 +186,9 @@ int ObLogDistinct::re_est_cost(EstimateCostInfo &param, double &card, double &co
return ret;
}
int ObLogDistinct::inner_est_cost(double child_card, double child_ndv, double &op_cost)
int ObLogDistinct::inner_est_cost(const int64_t parallel, double child_card, double child_ndv, double &op_cost)
{
int ret = OB_SUCCESS;
int64_t parallel = get_parallel();
double per_dop_card = 0.0;
double per_dop_ndv = 0.0;
ObLogicalOperator *child = NULL;