75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_OPT
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#include "ob_log_material.h"
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#include "ob_log_operator_factory.h"
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#include "sql/optimizer/ob_opt_est_cost.h"
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#include "sql/optimizer/ob_join_order.h"
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#include "common/ob_smart_call.h"
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using namespace oceanbase::sql;
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using namespace oceanbase::common;
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using namespace oceanbase::sql::log_op_def;
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int ObLogMaterial::est_cost()
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{
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int ret = OB_SUCCESS;
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int64_t parallel = 0;
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ObLogicalOperator *child = get_child(ObLogicalOperator::first_child);
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if (OB_ISNULL(get_plan()) ||
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OB_ISNULL(child)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ret));
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} else if (OB_UNLIKELY((parallel = get_parallel()) < 1)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected parallel degree", K(parallel), K(ret));
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} else {
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double op_cost = 0.0;
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ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
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op_cost += ObOptEstCost::cost_material(child->get_card() / parallel,
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child->get_width(),
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opt_ctx);
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set_op_cost(op_cost);
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set_cost(child->get_cost() + op_cost);
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set_card(child->get_card());
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}
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return ret;
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}
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int ObLogMaterial::do_re_est_cost(EstimateCostInfo ¶m, double &card, double &op_cost, double &cost)
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{
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int ret = OB_SUCCESS;
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const int64_t parallel = param.need_parallel_;
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double child_card = 0.0;
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double child_cost = 0.0;
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ObLogicalOperator *child = get_child(ObLogicalOperator::first_child);
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if (OB_ISNULL(get_plan()) ||
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OB_ISNULL(child)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ret));
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} else if (OB_UNLIKELY(parallel < 1)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected parallel degree", K(parallel), K(ret));
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} else if (OB_FALSE_IT(param.need_row_count_ = -1)) {
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} else if (OB_FAIL(SMART_CALL(child->re_est_cost(param, child_card, child_cost)))) {
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LOG_WARN("failed to re est cost", K(ret));
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} else {
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ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
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op_cost = ObOptEstCost::cost_material(child_card / parallel,
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child->get_width(),
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opt_ctx);
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cost = child_cost + op_cost;
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card = child_card;
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}
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return ret;
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} |